List of computing and IT abbreviations

This is a list of computing and IT acronyms and abbreviations.

0–9
  • #!—Shebang
  • /.—Slashdot
  • .com—Dot commercial
  • 1GL—First-Generation Programming Language
  • 1NF—First Normal Form
  • 10B2—10BASE-2
  • 10B5—10BASE-5
  • 10B-F—10BASE-F
  • 10B-FB—10BASE-FB
  • 10B-FL—10BASE-FL
  • 10B-FP—10BASE-FP
  • 10B-T—10BASE-T
  • 100B-FX—100BASE-FX
  • 100B-T—100BASE-T
  • 100B-TX—100BASE-TX
  • 100BVG—100BASE-VG
  • 286—Intel 80286 processor
  • 2B1Q—2 Binary 1 Quaternary
  • 2FA—Two-factor authentication
  • 2GL—Second-Generation Programming Language
  • 2NF—Second Normal Form
  • 3GL—Third-Generation Programming Language
  • 3GPP—3rd Generation Partnership Project—'3G comms
  • 3GPP2—3rd Generation Partnership Project 2
  • 3NF—Third Normal Form
  • 386—Intel 80386 processor
  • 486—Intel 80486 processor
  • 4B5BLF—4 Byte 5 Byte Local Fiber
  • 4GL—Fourth-Generation Programming Language
  • 4NF—Fourth Normal Form
  • 5GL—Fifth-Generation Programming Language
  • 5NF—Fifth Normal Form
  • 6NF—Sixth Normal Form
  • 8B10BLF—8 Byte 10 Byte Local Fiber
  • 802.11—Wireless LAN

A
  • AAA—Authentication Authorization, Accounting
  • AABB—Axis Aligned Bounding Box
  • AAC—Advanced Audio Coding
  • AAL—ATM Adaptation Layer
  • AALC—ATM Adaptation Layer Connection
  • AARP—AppleTalk Address Resolution Protocol
  • ABAC—Attribute-Based Access Control
  • ABCL—Actor-Based Concurrent Language
  • ABI—Application Binary Interface
  • ABM—Asynchronous Balanced Mode
  • ABR—Area Border Router
  • ABR—Auto Baud-Rate detection
  • ABR—Available Bitrate
  • ABR—Average Bitrate
  • AC—Acoustic Coupler
  • AC—Alternating Current
  • ACD—Automatic Call Distributor
  • ACE—Advanced Computing Environment
  • ACID—Atomicity Consistency Isolation Durability
  • ACK—ACKnowledgement
  • ACK—Amsterdam Compiler Kit
  • ACL—Access Control List
  • ACL—Active Current Loop
  • ACM—Association for Computing Machinery
  • ACME—Automated Classification of Medical Entities
  • ACP—Airline Control Program
  • ACPI—Advanced Configuration and Power Interface
  • ACR—Allowed Cell Rate
  • ACR—Attenuation to Crosstalk Ratio
  • AD—Active Directory
  • AD—Administrative Domain
  • ADC—Analog-to-Digital Converter
  • ADC—Apple Display Connector
  • ADB—Apple Desktop Bus
  • ADCCP—Advanced Data Communications Control Procedures
  • ADO—ActiveX Data Objects
  • ADSL—Asymmetric Digital Subscriber Line
  • ADT—Abstract Data Type
  • AE—Adaptive Equalizer
  • AES—Advanced Encryption Standard
  • AF—Anisotropic Filtering
  • AFP—Apple Filing Protocol
  • AGP—Accelerated Graphics Port
  • AH—Active Hub
  • AI—Artificial Intelligence
  • AIX—Advanced Interactive eXecutive
  • Ajax—Asynchronous JavaScript and XML
  • AL—Active Link
  • AL—Access List
  • ALAC—Apple Lossless Audio Codec
  • ALGOL—Algorithmic Language
  • ALSA—Advanced Linux Sound Architecture
  • ALU—Arithmetic and Logical Unit
  • AM—Access Method
  • AM—Active Matrix
  • AMOLED—Active-Matrix Organic Light-Emitting Diode
  • AM—Active Monitor
  • AM—Allied Mastercomputer
  • AM—Amplitude Modulation
  • AMD—Advanced Micro Devices
  • AMQP—Advanced Message Queuing Protocol
  • AMR—Audio Modem Riser
  • ANN—Artificial Neural Network
  • ANSI—American National Standards Institute
  • ANT—Another Neat Tool
  • AoE—ATA over Ethernet
  • AOP—Aspect-Oriented Programming
  • APCI—Application-Layer Protocol Control Information
  • API—Application Programming Interface
  • APIC—Advanced Programmable Interrupt Controller
  • APIPA—Automatic Private IP Addressing
  • APL—A Programming Language
  • APR—Apache Portable Runtime
  • ARC—Adaptive Replacement Cache
  • ARC—Advanced RISC Computing
  • ARIN—American Registry for Internet Numbers
  • ARM—Advanced RISC Machines
  • AROS—AROS Research Operating System
  • ARP—Address Resolution Protocol
  • ARPA—Address and Routing Parameter Area
  • ARPA—Advanced Research Projects Agency
  • ARPANET—Advanced Research Projects Agency Network
  • AS—Access Server
  • ASCII—American Standard Code for Information Interchange
  • AuthIP—Authenticated Internet Protocol
  • ASET—Automated Security Enhancement Tool
  • ASG—Abstract Semantic Graph
  • ASIC—Application-Specific Integrated Circuit
  • ASIMO—Advanced Step in Innovative Mobility
  • ASLR—Address Space Layout Randomization
  • ASM—Algorithmic State Machine
  • ASMP—Asymmetric Multiprocessing
  • ASN.1—Abstract Syntax Notation 1
  • ASP—Active Server Pages
  • ASP—Application Service Provider
  • ASR—Asynchronous Signal Routine
  • AST—Abstract Syntax Tree
  • AT—Advanced Technology
  • AT—Access Time
  • AT—Active Terminator
  • ATA—Advanced Technology Attachment
  • ATAG—Authoring Tool Accessibility Guidelines
  • ATAPI—Advanced Technology Attachment Packet Interface
  • ATM—Asynchronous Transfer Mode
  • AuthN—Authentication
  • AuthZ—Authorization
  • AV—Antivirus
  • AVC—Advanced Video Coding
  • AVI—Audio Video Interleaved
  • AWK—Aho Weinberger Kernighan
  • AWS—Amazon Web Services
  • AWT—Abstract Window Toolkit
  • AWFL—Acronym With Four Letters

B
  • B2B—Business-to-Business
  • B2C—Business-to-Consumer
  • B2E—Business-to-Employee
  • BAL—Basic Assembly Language
  • BAM—Block Availability Map
  • Bash—Bourne-again shell
  • BASIC—Beginner's All-Purpose Symbolic Instruction Code
  • BBP—Baseband Processor
  • BBS—Bulletin Board System
  • BC—Business Continuity
  • BCC—Blind Carbon Copy
  • BCD—Binary Coded Decimal
  • BCD—Boot Configuration Data
  • BCNF—Boyce–Codd normal form
  • BCP—Business Continuity Planning
  • BEEP—Blocks Extensible Exchange Protocol
  • BER—Bit Error Rate
  • BFD—Bidirectional Forwarding Detection
  • BFD—Binary File Descriptor
  • BFS—Breadth-First Search
  • BFT—Byzantine Fault Tolerant
  • BGP—Border Gateway Protocol
  • BI—Business Intelligence
  • BiDi—Bi-Directional
  • bin—binary
  • BINAC—Binary Automatic Computer
  • BIND—Berkeley Internet Name Domain
  • BIOS—Basic Input Output System
  • BJT—Bipolar Junction Transistor
  • bit—binary digit
  • Blob—Binary large object
  • Blog—Web Log
  • BMP—Basic Multilingual Plane
  • BNC—Baby Neill Constant
  • BOINC—Berkeley Open Infrastructure for Network Computing
  • BOM—Byte Order Mark
  • BOOTP—Bootstrap Protocol
  • BPDU—Bridge Protocol Data Unit
  • BPEL—Business Process Execution Language
  • BPL—Broadband over Power Lines
  • BPM—Business Process Management
  • BPM—Business Process Modeling
  • bps—bits per second
  • BRM—Business Reference Model
  • BRMS—Business Rule Management System
  • BRR—Business Readiness Rating
  • BRS—Broadband Radio Service
  • BSA—Business Software Alliance
  • BSB—Backside Bus
  • BSD—Berkeley Software Distribution
  • BSoD—Blue Screen of Death
  • BSS—Block Started by Symbol
  • BT—BitTorrent
  • BT—Bluetooth
  • B TAM—Basic Telecommunications Access Method
  • BW—Bandwidth
  • BYOD—Bring Your Own Device
  • Byte—By eight (group of 8 bits)

C
  • CA—Computer Accountancy
  • CAD—Computer-Aided Design
  • CAE—Computer-Aided Engineering
  • CAID—Computer-Aided Industrial Design
  • CAI—Computer-Aided Instruction
  • CAM—Computer-Aided Manufacturing
  • CAP—Consistency Availability Partition tolerance (theorem)
  • CAPTCHA—Completely Automated Public Turing Test to tell Computers and Humans Apart
  • CAT—Computer-Aided Translation
  • CAQ—Computer-Aided Quality Assurance
  • CASE—Computer-Aided Software Engineering
  • cc—C Compiler
  • CC—Carbon Copy
  • CD—Compact Disc
  • CDE—Common Desktop Environment
  • CDFS—Compact Disk File System
  • CDMA—Code Division Multiple Access
  • CDN—Content Delivery Network
  • CDP—Cisco Discovery Protocol
  • CDP—Continuous Data Protection
  • CD-R—CD-Recordable
  • CD-ROM—CD Read-Only Memory
  • CD-RW—CD-Rewritable
  • CDSA—Common Data Security Architecture
  • CERT—Computer Emergency Response Team
  • CES—Consumer Electronics Show
  • CF—Compact Flash
  • CFD—Computational Fluid Dynamics
  • CFG—Context-Free Grammar
  • CFG—Control Flow Graph
  • CG—Computer Graphics
  • CGA—Color Graphics Array
  • CGI—Common Gateway Interface
  • CGI—Computer-Generated Imagery
  • CGT—Computational Graph Theory
  • CHAP—Challenge-Handshake Authentication Protocol
  • CHS—Cylinder-Head-Sector
  • CIDR—Classless Inter-Domain Routing
  • CIFS—Common Internet Filesystem
  • CIM—Common Information Model
  • CIM—Computationally Independent Model
  • CIO—Chief Information Officer
  • CIR—Committed information rate
  • CISC—Complex Instruction Set Computer
  • CJK—Chinese, Japanese, and Korean
  • CJKV—Chinese, Japanese, Korean, and Vietnamese
  • CLI—Command Line Interface
  • CLR—Common Language Runtime
  • CM—Configuration Management
  • CM—Content Management
  • CMDB—Configuration Management Database
  • CMMI—Capability Maturity Model Integration
  • CMOS—Complementary Metal-Oxide Semiconductor
  • CMO—Current Mode of Operation
  • CMS—Content Management System
  • CN—Canonical Name
  • CN—Common Name
  • CNC—Computer Numerical Control
  • CNG—Cryptographic Next Generation
  • CNG—Cryptography Next Generation
  • CNR—Communications and Networking Riser
  • COBOL—Common Business-Oriented Language
  • COM—Component Object Model or communication
  • CORBA—Common Object Request Broker Architecture
  • CORS—Cross-Origin Resource Sharing
  • COTS—Commercial Off-The-Shelf
  • CPA—Cell Processor Architecture
  • CPAN—Comprehensive Perl Archive Network
  • CP/M—Control Program/Monitor
  • CPRI—Common Public Radio Interface
  • CPS—characters per second
  • CPU—Central Processing Unit
  • CQRS—Command–query separation
  • CR—Carriage Return
  • CRAN—Comprehensive R Archive Network
  • CRC—Cyclic Redundancy Check
  • CRLF—Carriage Return Line Feeds
  • CRM—Customer Relationship Management
  • CRS—Computer Reservations System
  • CRT—Cathode Ray Tube
  • CRUD—Create, Read, Update and Delete
  • CS—Cable Select
  • CS—Computer Science
  • CSE—Computer Science and Engineering
  • CSI—Common System Interface
  • CSM—Compatibility Support Module
  • CSMA/CD—Carrier sense multiple access with collision detection
  • CSP—Cloud Service Provider
  • CSP—Communicating Sequential Processes
  • CSRF—Cross-Site Request Forgery
  • CSS—Cascading Style Sheets
  • CSS—Content-Scrambling System
  • CSS—Closed Source Software
  • CSS—Cross-Site Scripting
  • CSV—Comma-Separated Values
  • CT—Computerized Tomography
  • CTAN—Comprehensive TeX Archive Network
  • CTCP—Client-To-Client Protocol
  • CTI—Computer Telephony Integration
  • CTFE—Compile Time Function Execution
  • CTL—Computational Tree Logic
  • CTM—Close To Metal
  • CTS—Clear To Send
  • CTSS—Compatible Time-Sharing System
  • CUA—Common User Access
  • CVS—Concurrent Versioning System
  • CX—Customer Experience

D
  • DAC—Digital-To-Analog Converter
  • DAC—Discretionary Access Control
  • DAL—Database Abstraction Layer
  • DAO—Data Access Object
  • DAO—Data Access Objects
  • DAO—Disk-At-Once
  • DAP—Directory Access Protocol
  • DAR—Direct Access Recovery
  • DARPA—Defense Advanced Research Projects Agency
  • DAS—Direct Attached Storage
  • DAT—Digital Audio Tape
  • DB—Database
  • DSKT—Desktop
  • DBA—Database Administrator
  • DBCS—Double Byte Character Set
  • DBMS—Database Management System
  • DCC—Direct Client-to-Client
  • DCCP—Datagram Congestion Control Protocol
  • DCCA—Debian Common Core Alliance
  • DCL—Data Control Language
  • DCS—Distributed Control System
  • DCMI—Dublin Core Metadata Initiative
  • DCOM—Distributed Component Object Model
  • DD—Double Density
  • DDE—Dynamic Data Exchange
  • DDI—DNS DHCP & IP Address management
  • DDL—Data Definition Language
  • DDoS—Distributed Denial of Service
  • DDR—Double Data Rate
  • DEC—Digital Equipment Corporation
  • DES—Data Encryption Standard
  • dev—development
  • DFA—Deterministic Finite Automaton
  • DFD—Data Flow Diagram
  • DFS—Depth-First Search
  • DFS—Distributed File System
  • DGD—Dworkin's Game Driver
  • DHCP—Dynamic Host Configuration Protocol
  • DHTML—Dynamic Hypertext Markup Language
  • DIF—Data Integrity Field
  • DIMM—Dual Inline Memory Module
  • DIN—Deutsches Institut für Normung
  • DIP—Dual In-line Package
  • DISM—Deployment Image and Service Management Tool
  • DIVX—Digital Video Express
  • DKIM—Domain Keys Identified Mail
  • DL—Download
  • DLL—Dynamic Link Library
  • DLNA—Digital Living Network Alliance
  • DLP—Data loss protection
  • DMA—Direct Memory Access
  • DMCA—Digital Millennium Copyright Act
  • DMI—Direct Media Interface
  • DML—Data Manipulation Language
  • DML—Definitive Media Library
  • DMR—Dennis M. Ritchie
  • DMZ—Demilitarized Zone
  • DN—Distinguished Name
  • DND—Drag-and-Drop
  • DNS—Domain Name System
  • DOA—Dead on Arrival
  • DOCSIS—Data Over Cable Service Interface Specification
  • DOM—Document Object Model
  • DoS—Denial of Service
  • DOS—Disk Operating System
  • DP—Dot Pitch
  • DPC—Deferred Procedure Call
  • DPI—Deep Packet Inspection
  • DPI—Dots Per Inch
  • DPMI—DOS Protected Mode Interface
  • DPMS—Display Power Management Signaling
  • DR—Disaster Recovery
  • DRAM—Dynamic Random-Access Memory
  • DR-DOS—Digital Research - Disk Operating System
  • DRI—Direct Rendering Infrastructure
  • DRM—Digital Rights Management
  • DRM—Direct Rendering Manager
  • DSA—Digital Signature Algorithm
  • DSDL—Document Schema Definition Languages
  • DSDM—Dynamic Systems Development Method
  • DSL—Digital Subscriber Line
  • DSL—Domain-Specific Language
  • DSLAM—Digital Subscriber Line Access Multiplexer
  • DSN—Database Source Name
  • DSN—Data Set Name
  • DSP—Digital Signal Processor
  • DSSSL—Document Style Semantics and Specification Language
  • DTD—Document Type Definition
  • DTE—Data Terminal Equipment or data transfer rate
  • DTP—Desktop Publishing
  • DTR—Data Terminal Ready or Data transfer rate
  • DVD—Digital Versatile Disc or Digital Video Disc
  • DVD-R—DVD-Recordable
  • DVD-ROM—DVD-Read Only Memory
  • DVD-RW—DVD-Rewritable
  • DVI—Digital Visual Interface
  • DVR—Digital Video Recorder
  • DW—Data Warehouse

E
  • EAI—Enterprise Application Integration
  • EAP—Extensible Authentication Protocol
  • EAS—Exchange ActiveSync
  • EBCDIC—Extended Binary Coded Decimal Interchange Code
  • EBML—Extensible Binary Meta Language
  • ECC—Elliptic Curve Cryptography
  • ECMA—European Computer Manufacturers Association
  • ECN—Explicit Congestion Notification
  • ECOS—Embedded Configurable Operating System
  • ECRS—Expense and Cost Recovery System
  • EDA—Electronic Design Automation
  • EDGE— Enhanced Data rates for GSM Evolution
  • EDI—Electronic Data Interchange
  • EDO—Extended Data Out
  • EDSAC—Electronic Delay Storage Automatic Calculator
  • EDVAC—Electronic Discrete Variable Automatic Computer
  • EEPROM—Electronically Erasable Programmable Read-Only Memory
  • EFF—Electronic Frontier Foundation
  • EFI—Extensible Firmware Interface
  • EFM—Eight-to-Fourteen Modulation
  • EFM—Ethernet in the First Mile
  • EFS—Encrypting File System
  • EGA—Enhanced Graphics Array
  • E-mail—Electronic mail
  • EGP—Exterior Gateway Protocol
  • eID—electronic ID card
  • EIDE—Enhanced IDE
  • EIGRP—Enhanced Interior Gateway Routing Protocol
  • EISA—Extended Industry Standard Architecture
  • ELF—Extremely Low Frequency
  • ELF—Executable and Linkable Format
  • ELM—ELectronic Mail
  • EMACS—Editor MACroS
  • EMS—Expanded Memory Specification
  • ENIAC—Electronic Numerical Integrator And Computer
  • EOD—End of Day
  • EOF—End of File
  • EOL—End of Line
  • EOM—End Of Message
  • EOS—End Of Support
  • EPIC—Explicitly Parallel Instruction Computing
  • EPROM—Erasable Programmable Read-Only Memory
  • ERD—Entity-Relationship Diagram
  • ERM—Entity-Relationship Model
  • ERP—Enterprise Resource Planning
  • eSATA—external SATA
  • ESB—Enterprise service bus
  • ESCON—Enterprise Systems Connection
  • ESD—Electrostatic Discharge
  • ESI—Electronically Stored Information
  • ESR—Eric Steven Raymond
  • ETL—Extract, Transform, Load
  • ETW—Event Tracing for Windows
  • EUC—Extended Unix Code
  • EULA—End User License Agreement
  • EWM—Enterprise Work Management
  • EWMH—Extended Window Manager Hints
  • EXT—EXTended file system
  • ETA—Estimated Time of Arrival

F
  • FAP—FORTRAN Assembly Program
  • FASM—Flat ASseMbler
  • FAT—File Allocation Table
  • FAQ—Frequently Asked Questions
  • FBDIMM—Fully Buffered Dual Inline Memory Module
  • FC-AL—Fibre Channel Arbitrated Loop
  • FCB—File Control Block
  • FCS—Frame Check Sequence
  • FDC—Floppy Disk Controller
  • FDS—Fedora Directory Server
  • FDD—Frequency-Division Duplexing
  • FDD—Floppy Disk Drive
  • FDDI—Fiber Distributed Data Interface
  • FDM—Frequency-Division Multiplexing
  • FDMA—Frequency-Division Multiple Access
  • FEC—Forward Error Correction
  • FEMB—Front-End Motherboard
  • FET—Field Effect Transistor
  • FHS—Filesystem Hierarchy Standard
  • FICON—FIber CONnectivity
  • FIFO—First In First Out
  • FIPS—Federal Information Processing Standards
  • FL—Function Level
  • FLAC—Free Lossless Audio Codec
  • FLOPS—FLoating-Point Operations Per Second
  • FLOSS—Free/Libre/Open Source Software
  • FMC— Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless"
  • FMO—Future Mode of Operation
  • FOLDOC—Free On-line Dictionary of Computing
  • FORTRAN—Formula Translation
  • FOSDEM—Free and Open source Software Developers' European Meeting
  • FOSI—Formatted Output Specification Instance
  • FOSS—Free and Open Source Software
  • FP—Function Programming
  • FPGA—Field Programmable Gate Array
  • FPS—Floating Point Systems
  • FPU—Floating Point Unit
  • FRU—Field Replaceable Unit
  • FS—File System
  • FSB—Front Side Bus
  • fsck—File System Check
  • FSF—Free Software Foundation
  • FSM—Finite State Machine
  • FTTA—Fiber To The Antenna
  • FTTC—Fiber To The Curb
  • FTTH—Fiber To The Home
  • FTTP—Fiber To The Premises
  • FTP—File Transfer Protocol
  • FQDN—Fully Qualified Domain Name
  • FUD—Fear Uncertainty Doubt
  • FWS—Folding White Space
  • FXP—File eXchange Protocol
  • FYI—For Your Information
  • FVEK—Full Volume Encryption Key

G
  • G11N—Globalization
  • Gas—GNU Assembler
  • Gb—Gigabit
  • GB—Gigabyte
  • GCC—GNU Compiler Collection
  • GCJ—GNU Compiler for Java
  • GCP—Google Cloud Platform
  • GCR—Group Coded Recording
  • GDB—GNU Debugger
  • GDI—Graphics Device Interface
  • GFDL—GNU Free Documentation License
  • GIF—Graphics Interchange Format
  • GIGO—Garbage In, Garbage Out
  • GIMP—GNU Image Manipulation Program
  • GIMPS—Great Internet Mersenne Prime Search
  • GIS—Geographic Information System
  • GLUT—OpenGL Utility Toolkit
  • GML—Geography Markup Language
  • GNOME—GNU Network Object Model Environment
  • GNU—GNU's Not Unix
  • GOMS—Goals, Operators, Methods, and Selection rules
  • GPASM—GNU PIC ASseMbler
  • GPFS—General Parallel File System
  • GPG—GNU Privacy Guard
  • GPGPU—General-Purpose Computing on Graphics Processing Units
  • GPIB—General-Purpose Instrumentation Bus
  • GPL—General Public License
  • GPL—General-Purpose Language
  • GPRS—General Packet Radio Service
  • GPT—GUID Partition Table
  • GPU—Graphics Processing Unit
  • GRUB—Grand Unified Boot-Loader
  • GERAN—GSM EDGE Radio Access Network
  • GSM—Global System for Mobile Communications
  • GTK+—GIMP Toolkit
  • GUI—Graphical User Interface
  • GUID—Globally Unique IDentifier
  • GWT—Google Web Toolkit
  • GYR—IT Networking

H
  • HA—High availability
  • HAL—Hardware Abstraction Layer
  • HARD—HTML Application Rapid Development
  • HASP—Houston Automatic Spooling Priority
  • HBA—Host Bus Adapter
  • HCI—Human Computer Interaction
  • HD—High Density
  • HDD—Hard Disk Drive
  • HCL—Hardware Compatibility List
  • HD DVD—High Definition DVD
  • HDL—Hardware Description Language
  • HDMI—High-Definition Multimedia Interface
  • HECI—Host Embedded Controller Interface
  • HF—High Frequency
  • HFS—Hierarchical File System
  • HHD—Hybrid Hard Drive
  • HID—Human Interface Device
  • HIG—Human Interface Guidelines
  • HIRD—Hurd of Interfaces Representing Depth
  • HLASM—High Level ASseMbler
  • HLS—HTTP Live Streaming
  • HMA—High Memory Area
  • HP—Hewlett-Packard
  • HPC—High-Performance Computing
  • HPFS—High Performance File System
  • HSDPA—High-Speed Downlink Packet Access
  • HTC—High-Throughput Computing
  • HSM—Hierarchical Storage Management
  • HT—Hyper Threading
  • HTM—Hierarchical Temporal Memory
  • HTML—Hypertext Markup Language
  • HTTP—Hypertext Transfer Protocol
  • HTTPd—Hypertext Transport Protocol Daemon
  • HTTPS—HTTP Secure
  • HTX—HyperTransport eXpansion
  • HURD—Hird of Unix-Replacing Daemons
  • HVD—Holographic Versatile Disc
  • Hz—Hertz

I
  • I²C—Inter-Integrated Circuit
  • I²S—Integrated Interchip Sound
  • I18N—Internationalization
  • IANA—Internet Assigned Numbers Authority
  • IaaS—Infrastructure as a Service
  • iBCS—Intel Binary Compatibility Standard
  • IBM—International Business Machines
  • IC—Integrated Circuit
  • ICANN—Internet Corporation for Assigned Names and Numbers
  • ICE—In-Circuit Emulator
  • ICE—Intrusion Countermeasure Electronics
  • ICH—I/O Controller Hub
  • ICMP—Internet Control Message Protocol
  • ICP—Internet Cache Protocol
  • ICS—Internet Connection Sharing
  • ICT—Information and Communication Technology
  • IDE—Integrated Development Environment
  • IDE—Integrated Drive Electronics
  • IDF—Intermediate Distribution Frame
  • IDF—Intermediate Data Format
  • IDL—Interactive Data Language
  • IDL—Interface Definition Language
  • IDS—Intrusion Detection System
  • IE—Internet Explorer
  • IEC—International Electrotechnical Commission
  • IEEE—Institute of Electrical and Electronics Engineers
  • IETF—Internet Engineering Task Force
  • IFGICT—International Federation of Global & Green ICT
  • IFL—Integrated Facility for Linux
  • IGMP—Internet Group Management Protocol
  • IGRP—Interior Gateway Routing Protocol
  • IHV—Independent Hardware Vendor
  • IIOP—Internet Inter-Orb Protocol
  • IIS—Internet Information Services
  • IKE—Internet Key Exchange
  • IL—Intermediate Language
  • IM—Instant Message or Instant Messaging
  • IMAP—Internet Message Access Protocol
  • IME—Input Method Editor
  • IMR—Internet Monthly Report
  • INFOSEC—Information Systems Security
  • I/O—Input/output
  • IoT—Internet of Things
  • IP—Intellectual Property
  • IP—Internet Protocol
  • IPAM—IP Address Management
  • IPC—Inter-Process Communication
  • IPL—Initial Program Load
  • IPMI—Intelligent Platform Management Interface
  • IPO—Inter Procedural Optimization
  • IPP—Internet Printing Protocol
  • IPS—In-Plane Switching
  • IPS—Instructions Per Second
  • IPS—Intrusion Prevention System
  • IPsec—Internet Protocol security
  • IPTV—Internet Protocol Television
  • IPv4—Internet Protocol version 4
  • IPv6—Internet Protocol version 6
  • IPX—Internetwork Packet Exchange
  • IR—Intermediate Representation
  • IRC—Internet Relay Chat
  • IrDA—Infrared Data Association
  • IRI—Internationalized Resource Identifier
  • IRP—I/O Request Packet
  • IRQ—Interrupt Request
  • IS—Information Systems
  • IS-IS—Intermediate System to Intermediate System
  • ISA—Industry Standard Architecture
  • ISA—Instruction Set Architecture
  • ISAM—Indexed Sequential Access Method
  • ISATAP—Intra-Site Automatic Tunnel Addressing Protocol
  • ISC—Internet Storm Center
  • iSCSI—Internet Small Computer System Interface
  • ISDN—Integrated Services Digital Network
  • ISO—International Organization for Standardization
  • iSNS—Internet Storage Name Service
  • ISP—Internet Service Provider
  • ISPF—Interactive System Productivity Facility
  • ISR—Interrupt Service Routine
  • ISV—Independent Software Vendor
  • IT—Information Technology
  • ITIL—Information Technology Infrastructure Library
  • ITL—Interval Temporal Logic
  • ITU—International Telecommunication Union
  • IVRS—Interactive Voice Response System
  • IVCR—Interactive Virtual Classroom
  • ISDN—Integrated service digital network

J
  • J2EE—Java 2 Enterprise Edition
  • J2ME—Java 2 Micro Edition
  • J2SE—Java 2 Standard Edition
  • JAXB—Java Architecture for XML Binding
  • JAX-RPC—Java XML for Remote Procedure Calls
  • JAXP—Java API for XML Processing
  • JBOD—Just a Bunch of Disks
  • JCE— Java Cryptography Extension
  • JCL—Job Control Language
  • JCP—Java Community Process
  • JDBC—Java Database Connectivity
  • JDK—Java Development Kit
  • JEE—Java Enterprise Edition
  • JES—Job Entry Subsystem
  • JDS—Java Desktop System
  • JFC—Java Foundation Classes
  • JFET—Junction Field-Effect Transistor
  • JFS—IBM Journaling File System
  • JINI—Jini Is Not Initials
  • JIT—Just-In-Time
  • JME—Java Micro Edition
  • JMX—Java Management Extensions
  • JMS—Java Message Service
  • JNDI—Java Naming and Directory Interface
  • JNI—Java Native Interface
  • JNZ—Jump non-zero
  • JPEG—Joint Photographic Experts Group
  • JRE—Java Runtime Environment
  • JS—JavaScript
  • JSE—Java Standard Edition
  • JSON—JavaScript Object Notation
  • JSP—Jackson Structured Programming
  • JSP—JavaServer Pages
  • JTAG—Joint Test Action Group
  • JVM—Java Virtual Machine

K
  • K&R—Kernighan and Ritchie
  • KB—Keyboard
  • Kb—Kilobit
  • Kbps—Kilobit Per Second
  • KB—Kilobyte
  • KB—Knowledge Base
  • KiB—Kibibyte
  • KDE—K Desktop Environment
  • kHz—Kilohertz
  • KM—Knowledge Machine
  • KRL—Knowledge Representation Language
  • KVM—Keyboard, Video, Mouse

L
  • L10N—Localization
  • L2TP—Layer two Tunneling Protocol
  • LACP—Link Aggregation Control Protocol
  • LAMP—Linux Apache MySQL Perl
  • LAMP—Linux Apache MySQL PHP
  • LAMP—Linux Apache MySQL Python
  • LAN—Local Area Network
  • LBA—Logical Block Addressing
  • LB—Load Balancer
  • LCD—Liquid Crystal Display
  • LCR—Least Cost Routing
  • LCOS—Liquid Crystal On Silicon
  • LDAP—Lightweight Directory Access Protocol
  • LE—Logical Extents
  • LED—Light-Emitting Diode
  • LF—Line Feed
  • LF—Low Frequency
  • LFS—Linux From Scratch
  • LGPL—Lesser General Public License
  • LIB—LIBrary
  • LIF—Low Insertion Force
  • LIFO—Last In First Out
  • LILO—Linux Loader
  • LIP—Loop Initialization Primitive
  • LISP—LISt Processing
  • LKML—Linux Kernel Mailing List
  • LM—Lan Manager
  • LOC—Lines of Code
  • LPC—Lars Pensjö C
  • LPI—Lines Per Inch
  • LPI—Linux Professional Institute
  • LPT— Line Print Terminal
  • LRU—Least Recently Used
  • LSB—Least Significant Bit
  • LSB—Linux Standard Base
  • LSI—Large-Scale Integration
  • LTE—Long Term Evolution
  • LTL—Linear Temporal Logic
  • LTR—Left-to-Right
  • LUG—Linux User Group
  • LUN—Logical Unit Number
  • LV—Logical Volume
  • LVD—Low Voltage Differential
  • LVM—Logical Volume Management
  • LZW—Lempel-Ziv-Welch
  • LGA—Land Grid Array

M
  • MAC—Mandatory Access
  • MAC—Media Access Control
  • MANET—Mobile Ad-Hoc Network
  • MAN—Metropolitan Area Network
  • MAPI—Messaging Application Programming Interface
  • MBCS—Multi Byte Character Set
  • MBD—Model-Based Design
  • MBR—Master Boot Record
  • Mb—Megabit
  • MB—Megabyte
  • MCAD—Microsoft Certified Application Developer
  • MCAS—Microsoft Certified Application Specialist
  • MCA—Micro Channel Architecture
  • MCA—Microsoft Certified Architect
  • MCDBA—Microsoft Certified DataBase Administrator
  • MCDST—Microsoft Certified Desktop Support Technician
  • MCITP—Microsoft Certified Information Technology Professional
  • MCM—Microsoft Certified Master
  • MCPC—Multiple Channels Per Carrier
  • MCPD—Microsoft Certified Professional Developer
  • MCP—Microsoft Certified Professional
  • MCSA—Microsoft Certified Systems Administrator
  • MCSD—Microsoft Certified Solution Developer
  • MCSE—Microsoft Certified Systems Engineer
  • MCTS—Microsoft Certified Technology Specialist
  • MCT—Microsoft Certified Trainer
  • MDA—Monochrome Display Adapter
  • MDA—Mail Delivery Agent
  • MDA—Model-Driven Architecture
  • MDD/MDSD—Model-Driven (Software) Development
  • MDF—Main Distribution Frame
  • MDI—Multiple Document Interface
  • MDM—Master Data Management
  • ME—Microsoft Edge
  • ME—[Windows] Millennium Edition
  • MFC—Microsoft Foundation Classes
  • MFM—Modified Frequency Modulation
  • MF—Medium Frequency
  • MGCP—Media Gateway Control Protocol
  • MHz—Megahertz
  • MIB—Management Information Base
  • MICR—Magnetic Ink Character Recognition or Magnetic Ink Character Reader
  • MIDI—Musical Instrument Digital Interface
  • MIMD—Multiple Instruction, Multiple Data
  • MIME—Multipurpose Internet Mail Extensions
  • MIMO—Multiple-Input Multiple-Output
  • MINIX—MIni-uNIX
  • MIPS—Microprocessor without Interlocked Pipeline Stages
  • MIPS—Million Instructions Per Second
  • MISD—Multiple Instruction, Single Data
  • MIS—Management Information Systems
  • MIT—Massachusetts Institute of Technology
  • ML—Machine Learning
  • MMC— Microsoft Management Console
  • MMDS—Mortality Medical Data System
  • MMDS—Multichannel Multipoint Distribution Service
  • MMF—Multi-Mode (optical) Fiber
  • MMIO—Memory-Mapped I/O
  • MMI—Man Machine Interface.
  • MMORPG—Massively Multiplayer Online Role-Playing Game
  • MMS—Multimedia Message Service
  • MMU—Memory Management Unit
  • MMX—Multi-Media Extensions
  • MNG—Multiple-image Network Graphics
  • MoBo—Motherboard
  • MOM—Message-Oriented Middleware
  • MOO—MUD Object Oriented
  • MOP—Meta-Object Protocol
  • MOSFET—Metal-Oxide Semiconductor Field Effect Transistor
  • MOS—Microsoft Office Specialist
  • MOTD—Message Of The Day
  • MOUS—Microsoft Office User Specialist
  • MOV—Apple QuickTime Multimedia File
  • MPAA—Motion Picture Association of America
  • MPEG—Motion Pictures Experts Group
  • MPLS—Multiprotocol Label Switching
  • MPL—Mozilla Public License
  • MPU—Microprocessor Unit
  • MS-DOS—Microsoft DOS
  • MSA—Mail Submission Agent
  • MSB—Most Significant Bit
  • MSDN—Microsoft Developer Network
  • MSI—Medium-Scale Integration
  • MSI—Message Signaled Interrupt
  • MSI—Microsoft Installer
  • MSN—Microsoft Network
  • MS—Microsoft
  • MS—Memory Stick
  • MTA—Mail Transfer Agent
  • MTA—Microsoft Technology Associate
  • MTBF—Mean Time Between Failures
  • MTU—Maximum Transmission Unit
  • MT—Machine Translation
  • MUA—Mail User Agent
  • MUD—Multi-User Dungeon
  • MU—Memory Unit
  • MVC—Model-View-Controller
  • MVP—Most Valuable Professional
  • MVS—Multiple Virtual Storage
  • MWC—Mobile World Congress
  • MXF—Material Exchange Format
  • MX—Mail exchange

N
  • NAC—Network Access Control
  • NACK—Negative ACKnowledgement
  • NAK—Negative AcKnowledge Character
  • NaN—Not a Number
  • NAP—Network Access Protection
  • NAS—Network-Attached Storage
  • NASM—Netwide ASseMbler
  • NAT—Network Address Translation
  • NCP—NetWare Core Protocol
  • NCQ—Native Command Queuing
  • NCSA—National Center for Supercomputing Applications
  • NDIS—Network Driver Interface Specification
  • NDPS—Novell Distributed Print Services
  • NDS—Novell Directory Services
  • NEP—Network Equipment Provider
  • NetBIOS—Network Basic Input/Output System
  • NetBT—NetBIOS over TCP/IP
  • NEXT—Near-End CrossTalk
  • NFA—Nondeterministic Finite Automaton
  • NFC—Near field communication
  • NFS—Network File System
  • NGL—aNGeL
  • NGSCB—Next-Generation Secure Computing Base
  • NI—National Instruments
  • NIC—Network Interface Controller or Network Interface Card
  • NIM—No Internal Message
  • NIO—Non-blocking I/O
  • NIST—National Institute of Standards and Technology
  • NLE—Non-Linear Editing system
  • NLP—Natural Language Processing
  • NLS—Native Language Support
  • NMI—Non-Maskable Interrupt
  • NNTP—Network News Transfer Protocol
  • NOC—Network Operations Center
  • NOP—No OPeration
  • NOS—Network Operating System
  • NP—Nondeterministic Polynomial time
  • NPL—Netscape Public License
  • NPTL—Native POSIX Thread Library
  • NPU—Network Processing Unit
  • NS—Netscape
  • NSA—Network Security Appliance
  • NSI—Network Service Interface
  • NSPR—Netscape Portable Runtime
  • NSS—Novell Storage Service
  • NSS—Network Security Services
  • NSS—Name Service Switch
  • NT—New Technology
  • NTFS—NT Filesystem
  • NTLM—NT Lan Manager
  • NTP—Network Time Protocol
  • NUMA—Non-Uniform Memory Access
  • NURBS—Non-Uniform Rational B-Spline
  • NVR—Network Video Recorder
  • NVRAM—Non-Volatile Random Access Memory

O
  • OASIS—Organization for the Advancement of Structured Information Standards
  • OAT—Operational Acceptance Testing
  • OBSAI—Open Base Station Architecture Initiative
  • ODBC—Open Database Connectivity
  • OEM—Original Equipment Manufacturer
  • OES—Open Enterprise Server
  • OFDM—Orthogonal Frequency Division Multiplexing
  • OFTC—Open and Free Technology Community
  • OID—Object Identifier
  • OLAP—Online Analytical Processing
  • OLE—Object Linking and Embedding
  • OLED—Organic Light Emitting Diode
  • OLPC—One Laptop per Child
  • OLTP—Online Transaction Processing
  • OMF—Object Module Format
  • OMG—Object Management Group
  • OMR—Optical Mark Reader
  • OO—Object-Oriented
  • OO—OpenOffice
  • OOE—Out-of-Order Execution
  • OOM—Out Of Memory
  • OOo—OpenOffice.org
  • OoOE—Out-of-Order Execution
  • OOP—Object-Oriented Programming
  • OOTB—Out of the box
  • OPML—Outline Processor Markup Language
  • ORB—Object Request Broker
  • ORM—Object-Relational Mapping
  • OS—Open Source
  • OS—Operating System
  • OSCON—O'Reilly Open Source CONvention
  • OSDN—Open Source Development Network
  • OSI—Open Source Initiative
  • OSI—Open Systems Interconnection
  • OSPF—Open Shortest Path First
  • OSS—Open Sound System
  • OSS—Open-Source Software
  • OSS—Operations Support System
  • OSTG—Open Source Technology Group
  • OUI—Organisationally Unique Identifier

P
  • P2P—Peer-To-Peer
  • PaaS—Platform as a Service
  • PAN—Personal Area Network
  • PAP—Password Authentication Protocol
  • PARC—Palo Alto Research Center
  • PATA—Parallel ATA
  • PBS—Portable Batch System
  • PC—Personal Computer
  • PCB—Printed Circuit Board
  • PCB—Process Control Block
  • PC DOS—Personal Computer Disc Operating System
  • PCI—Peripheral Component Interconnect
  • PCIe—PCI Express
  • PCI-X—PCI Extended
  • PCL—Printer Command Language
  • PCMCIA—Personal Computer Memory Card International Association
  • PCM—Pulse-Code Modulation
  • PCRE—Perl Compatible Regular Expressions
  • PD—Public Domain
  • PDA—Personal Digital Assistant
  • PDF—Portable Document Format
  • PDH—Plesiochronous Digital Hierarchy
  • PDP—Programmed Data Processor
  • PE—Physical Extents
  • PERL—Practical Extraction and Reporting Language
  • PFA—Please Find Attachment
  • PG—Peripheral Gateway
  • PGA—Pin Grid Array
  • PGA—Programmable Gate Array
  • PGO—Profile-Guided Optimization
  • PGP—Pretty Good Privacy
  • PHP—Hypertext Preprocessor
  • PIC—Peripheral Interface Controller
  • PIC—Programmable Interrupt Controller
  • PID—Proportional-Integral-Derivative
  • PID—Process ID
  • PIM—Personal Information Manager
  • PINE—Program for Internet News and Email
  • PIM—Platform Independent Model
  • PING—Packet Internet Gopher
  • PIO—Programmed Input/Output
  • PKCS—Public Key Cryptography Standards
  • PKI—Public Key Infrastructure
  • PLC—Power Line Communication
  • PLC—Programmable Logic Controller
  • PLD—Programmable Logic Device
  • PL/I—Programming Language One
  • PL/M—Programming Language for Microcomputers
  • PL/P—Programming Language for Prime
  • PLT—Power Line Telecommunications
  • PMM—POST Memory Manager
  • PNG—Portable Network Graphics
  • PnP—Plug-and-Play
  • PNRP—Peer Name Resolution Protocol
  • PoE—Power over Ethernet
  • PoS—Point of Sale
  • POID—Persistent Object Identifier
  • POJO—Plain Old Java Object
  • POP—Point of Presence
  • POP3—Post Office Protocol v3
  • POSIX—Portable Operating System Interface, formerly IEEE-IX
  • POST—Power-On Self Test
  • PPC—PowerPC
  • PPI—Pixels Per Inch
  • PPM—Pages Per Minute
  • PPP—Point-to-Point Protocol
  • PPPoA—PPP over ATM
  • PPPoE—PPP over Ethernet
  • PPTP—Point-to-Point Tunneling Protocol
  • PR—Pull Request
  • PROM—Programmable Read Only Memory
  • PS—PostScript
  • PS/2—Personal System/2
  • PSA—Professional Services Automation
  • PSM—Platform Specific Model
  • PSTN—Public Switched Telephone Network
  • PSU—Power Supply Unit
  • PSVI—Post-Schema-Validation Infoset
  • PTS-DOS—PhysTechSoft - Disk Operating System
  • PV—Physical Volume
  • PVG—Physical Volume Group
  • PVR—Personal Video Recorder
  • PXE—Preboot Execution Environment
  • PXI—PCI eXtensions for Instrumentation

Q
  • QDR—Quad Data Rate
  • QA—Quality Assurance
  • QFP—Quad Flat Package
  • QoS—Quality of Service
  • QOTD—Quote of the Day
  • Qt—Quasar Toolkit
  • QTAM—Queued Teleprocessing Access Method
  • QSOP—Quarter Small Outline Package
  • qWave—Quality Windows Audio/Video Experience

R
  • RACF—Resource Access Control Facility
  • RAD—Rapid Application Development
  • RADIUS—Remote Authentication Dial In User Service
  • RAID—Redundant Array of Independent Disks
  • RAII—Resource Acquisition Is Initialization
  • RAIT—Redundant Array of Inexpensive Tapes
  • RAM—Random Access Memory
  • RARP—Reverse Address Resolution Protocol
  • RAS—Reliability, Availability and Serviceability
  • RAS—Remote access service
  • RC—Region Code
  • RC—Release Candidate
  • RC—Run Commands
  • RCA—Root Cause Analysis
  • RCS—Revision Control System
  • RD—Remote Desktop
  • rd—remove directory
  • RDBMS—Relational Database Management System
  • RDC—Remote Desktop Connection
  • RDF—Resource Description Framework
  • RDM—Relational Data Model
  • RDOS—Real-time Disk Operating System
  • RDP— Remote Desktop Protocol
  • RDS—Remote Data Services
  • REFAL—Recursive Functions Algorithmic Language
  • REP—RAID Error Propagation
  • REST—Representational State Transfer
  • RESV—Reservation Message
  • regex—Regular Expression
  • regexp—Regular Expression
  • RF—Radio Frequency
  • RFC—Request For Comments
  • RFI—Radio Frequency Interference
  • RFID—Radio Frequency Identification
  • RGB—Red, Green, Blue
  • RGBA—Red, Green, Blue, Alpha
  • RHL—Red Hat Linux
  • RHEL—Red Hat Enterprise Linux
  • RIA—Rich Internet Application
  • RIAA—Recording Industry Association of America
  • RIP—Raster Image Processor
  • RIP—Routing Information Protocol
  • RIR—Regional Internet registry
  • RISC—Reduced Instruction Set Computer
  • RISC OS—Reduced Instruction Set Computer Operating System
  • RJE—Remote Job Entry
  • RLE—Run-Length Encoding
  • RLL—Run-Length Limited
  • rmdir—remove directory
  • RMI—Remote Method Invocation
  • RMS—Richard Matthew Stallman
  • ROM—Read Only Memory
  • ROMB—Read-Out Motherboard
  • ROM-DOS—Read Only Memory - Disk Operating System
  • RPA—Robotic Process Automation
  • RPC—Remote Procedure Call
  • RPG—Report Program Generator
  • RPM—RPM Package Manager
  • RRAS—Routing and Remote Access Service
  • RSA—Rivest Shamir Adleman
  • RSI—Repetitive Strain Injury
  • RSS—Radio Service Software
  • RSS—Rich Site Summary, RDF Site Summary, or Really Simple Syndication
  • RSVP—Resource Reservation Protocol
  • RTAI—Real-Time Application Interface
  • RTC—Real-Time Clock
  • RTE—Real-Time Enterprise
  • RTEMS—Real-Time Executive for Multiprocessor Systems
  • RTF—Rich Text Format
  • RTL—Right-to-Left
  • RTMP—Real Time Messaging Protocol
  • RTOS—Real-Time Operating System
  • RTP—Real-time Transport Protocol
  • RTS—Ready To Send
  • RTSP—Real Time Streaming Protocol
  • RTTI—Run-time Type Information
  • RWD—Responsive Web Design

S
  • SaaS—Software as a Service
  • SASS—Syntatically Awesome Style Sheets
  • SAM— Security Account Manager
  • SAN—Storage Area Network
  • SAS—Serial attached SCSI
  • SATA—Serial ATA
  • SAX—Simple API for XML
  • SBOD—Spinning Beachball of Death
  • SBP-2—Serial Bus Protocol 2
  • sbin—superuser binary
  • sbs—Small Business Server
  • SBU—Standard Build Unit
  • SCADA—Supervisory Control And Data Acquisition
  • SCID—Source Code in Database
  • SCM—Software Configuration Management
  • SCM—Source Code Management
  • SCP—Secure Copy
  • SCPC—Single Channel Per Carrier
  • SCPI—Standard Commands for Programmable Instrumentation
  • SCSA—Secure Content Storage Association
  • SCSI—Small Computer System Interface
  • SCTP—Stream Control Transmission Protocol
  • SD—Secure Digital
  • SDDL—Security Descriptor Definition Language
  • SDH—Synchronous Digital Hierarchy
  • SDI—Single Document Interface
  • SEC—Single Edge Contact
  • SDIO—Secure Digital Input Output
  • SDK—Software Development Kit
  • SDL—Simple DirectMedia Layer
  • SDN—Service Delivery Network
  • SDP—Session Description Protocol
  • SDR—Software-Defined Radio
  • SDRAM—Synchronous Dynamic Random Access Memory
  • SDSL—Symmetric DSL
  • SE—Single Ended
  • SEI—Software Engineering Institute
  • SEO—Search Engine Optimization
  • SFTP—Secure FTP
  • SFTP—Simple File Transfer Protocol
  • SFTP—SSH File Transfer Protocol
  • SGI—Silicon Graphics, Incorporated
  • SGML—Standard Generalized Markup Language
  • SGR—Select Graphic Rendition
  • SHA—Secure Hash Algorithm
  • SHDSL—Single-pair High-speed Digital Subscriber Line
  • SIEM—Security information and event management
  • SIGCAT—Special Interest Group on CD-ROM Applications and Technology
  • SIGGRAPH—Special Interest Group on Graphics
  • SIMD—Single Instruction, Multiple Data
  • SIM—Subscriber Identification Module
  • SIMM—Single Inline Memory Module
  • SIP—Session Initiation Protocol
  • SIP—Supplementary Ideographic Plane
  • SISD—Single Instruction, Single Data
  • SISD—Subscriber Identification Module
  • SISO—Single-Input and Single-Output
  • SLA—Service Level Agreement
  • SLED—SUSE Linux Enterprise Desktop
  • SLES—SUSE Linux Enterprise Server
  • SLI—Scalable Link Interface
  • SLIP—Serial Line Internet Protocol
  • SLM—Service Level Management
  • SLOC—Source Lines of Code
  • SME—Subject Matter Expert
  • SMF—Single-Mode (optical) Fiber
  • SPM—Software project management
  • SPMD—Single Program, Multiple Data
  • SPOF—Single point of failure
  • SMA—SubMiniature version A
  • SMB—Server Message Block
  • SMBIOS—System Management BIOS
  • SMIL—Synchronized Multimedia Integration Language
  • S/MIME—Secure/Multipurpose Internet Mail Extensions
  • SMP—Supplementary Multilingual Plane
  • SMP—Symmetric Multi-Processing
  • SMPS—Switch Mode Power Supply
  • SMS—Short Message Service
  • SMS—System Management Server
  • SMT—Simultaneous Multithreading
  • SMTP—Simple Mail Transfer Protocol
  • SNA—Systems Network Architecture
  • SNMP—Simple Network Management Protocol
  • SNTP—Simple Network Time Protocol
  • SOA—Service-Oriented Architecture
  • SOAP—Simple Object Access Protocol
  • SOAP—Symbolic Optimal Assembly Program
  • SOPA—Stop Online Piracy Act
  • SoC—System-on-a-Chip
  • SO-DIMM—Small Outline DIMM
  • SOE—Standard Operating Environment
  • SOHO—Small Office/Home Office
  • SOI—Silicon On Insulator
  • SP—Service Pack
  • SPA—Single Page Application
  • SPF—Sender Policy Framework
  • SPI—Serial Peripheral Interface
  • SPI—Stateful Packet Inspection
  • SPARC—Scalable Processor Architecture
  • SQL—Structured Query Language
  • SRAM—Static Random Access Memory
  • SSA—Static Single Assignment
  • SSD—Software Specification Document
  • SSD—Solid-State Drive
  • SSDP—Simple Service Discovery Protocol
  • SSE—Streaming SIMD Extensions
  • SSH—Secure Shell
  • SSI—Server Side Includes
  • SSI—Single-System Image
  • SSI—Small-Scale Integration
  • SSID—Service Set Identifier
  • SSL—Secure Socket Layer
  • SSO—Single Sign On
  • SSP—Supplementary Special-purpose Plane
  • SSSE—Supplementary Streaming SIMD Extensions
  • SSSP—Single Source Shortest Path
  • SSTP—Secure Socket Tunneling Protocol
  • su—superuser
  • SUS—Single UNIX Specification
  • SUSE—Software und System-Entwicklung
  • SVC—Scalable Video Coding
  • SVG—Scalable Vector Graphics
  • SVGA—Super Video Graphics Array
  • SVD—Structured VLSI Design
  • SWF—Shock Wave Flash
  • SWT—Standard Widget Toolkit
  • Sysop—System operator
  • SOLID— Single-responsibility Principle, Open-closed Principle, Liskov substitution principle, Interface segregation principle, Dependency Inversion principle

T
  • TAO—Track-At-Once
  • TAPI—Telephony Application Programming Interface
  • TASM—Turbo ASseMbler
  • TB—TeraByte
  • Tcl—Tool Command Language
  • TCP—Transmission Control Protocol
  • TCP/IP—Transmission Control Protocol/Internet Protocol
  • TCU—Telecommunication Control Unit
  • TDMA—Time-Division Multiple Access
  • TFT—Thin-Film Transistor
  • TFTP—Trivial File Transfer Protocol
  • TI—Texas Instruments
  • TIFF—Tagged Image File Format
  • TLA—Three-Letter Acronym
  • TLD—Top-Level Domain
  • TLS—Thread-Local Storage
  • TLS—Transport Layer Security
  • TLV—Type-length-value
  • tmp—temporary
  • TNC—Terminal Node Controller
  • TNC—Threaded Neill-Concelman connector
  • TPF—Transaction Processing Facility
  • TPM—Trusted Platform Module
  • TROFF—Trace Off
  • TRON—Trace On
  • TRON—The Real-time Operating system Nucleus
  • TRSDOS—Tandy Radio Shack - Disk Operating System
  • TSO—Time Sharing Option
  • TSP—Traveling Salesman Problem
  • TSR—Terminate and Stay Resident
  • TTA—True Tap Audio
  • TTF—TrueType Font
  • TTL—Transistor-Transistor Logic
  • TTL—Time To Live
  • TTS—Text-to-Speech
  • TTY—Teletype
  • TUCOWS—The Ultimate Collection of Winsock Software
  • TUG—TeX Users Group
  • TWAIN—Technology Without An Interesting Name

U
  • UAAG—User Agent Accessibility Guidelines
  • UAC—User Account Control
  • UART—Universal Asynchronous Receiver/Transmitter
  • UAT—User Acceptance Testing
  • UB—Undefined Behavior
  • UCS—Universal Character Set
  • UDDI—Universal Description, Discovery, and Integration
  • UDMA—Ultra DMA
  • UDP—User Datagram Protocol
  • UEFI—Unified Extensible Firmware Interface
  • UHF—Ultra High Frequency
  • UI—User Interface
  • UL—Upload
  • ULA—Uncommitted Logic Array
  • ULSI—Ultra Large Scale Integration
  • UMA—Upper Memory Area
  • UMB—Upper Memory Block
  • UML—Unified Modeling Language
  • UML—User-Mode Linux
  • UMPC—Ultra-Mobile Personal Computer
  • UMTS—Universal Mobile Telecommunications System
  • UNC—Universal Naming Convention
  • UNIVAC—Universal Automatic Computer (By MKS)
  • UPS—Uninterruptible Power Supply or Uninterrupted Power Supply
  • URI—Uniform Resource Identifier
  • URL—Uniform Resource Locator
  • URN—Uniform Resource Name
  • USB—Universal Serial Bus
  • usr—User System Resources
  • USR—U.S. Robotics
  • UTC—Coordinated Universal Time
  • UTF—Unicode Transformation Format
  • UTP—Unshielded Twisted Pair
  • UTRAN—Universal Terrestrial Radio Access Network
  • UUCP—Unix to Unix Copy
  • UUID—Universally Unique Identifier
  • UUN—Universal User Name
  • UVC—Universal Virtual Computer
  • UWP—Universal Windows Platform
  • UX—User Experience

V
  • var—variable
  • VAX—Virtual Address eXtension
  • VCPI—Virtual Control Program Interface
  • VB—Visual Basic
  • VBA—Visual Basic for Applications
  • VBS—Visual Basic Script
  • VDI—Virtual Desktop Infrastructure
  • VDU— Visual Display Unit
  • VDM— Virtual DOS machine
  • VDSL—Very High Bitrate Digital Subscriber Line
  • VESA—Video Electronics Standards Association
  • VFAT—Virtual FAT
  • VHD — Virtual Hard Disk
  • VFS—Virtual File System
  • VG—Volume Group
  • VGA—Video Graphics Array
  • VHF—Very High Frequency
  • VIRUS—Vital Information Resource Under Seize
  • VLAN—Virtual Local Area Network
  • VLSM—Variable Length Subnet Mask
  • VLB—Vesa Local Bus
  • VLF—Very Low Frequency
  • VLIW—Very Long Instruction Word
  • VLSI—Very-Large-Scale Integration
  • VM—Virtual Machine
  • VM—Virtual Memory
  • VMM—Virtual Machine Monitor
  • VNC—Virtual Network Computing
  • VOD—Video On Demand
  • VoIP—Voice over Internet Protocol
  • VPN—Virtual Private Network
  • VPS—Virtual Private Server
  • VPU—Visual Processing Unit
  • VR—Virtual Reality
  • VRML—Virtual Reality Modeling Language
  • VSAM—Virtual Storage Access Method
  • VSAT—Very Small Aperture Terminal
  • VT—Video Terminal?
  • VTL— Virtual Tape Library
  • VTAM—Virtual Telecommunications Access Method
  • VRAM—Video Random Access Memory

W
  • W3C—World Wide Web Consortium
  • WWDC—Apple World Wide Developer Conference
  • WAFS—Wide Area File Services
  • WAI—Web Accessibility Initiative
  • WAIS—Wide Area Information Server
  • WAN—Wide Area Network
  • WAP—Wireless Access Point
  • WAP—Wireless Application Protocol
  • WASM—Watcom ASseMbler
  • WBEM—Web-Based Enterprise Management
  • WCAG—Web Content Accessibility Guidelines
  • WCF—Windows Communication Foundation
  • WDM—Wavelength-Division Multiplexing
  • WebDAV—WWW Distributed Authoring and Versioning
  • WEP—Wired Equivalent Privacy
  • WFI—Wait For Interrupt
  • Wi-Fi—Wireless Fidelity
  • WiMAX—Worldwide Interoperability for Microwave Access
  • WinFS—Windows Future Storage
  • WinRT—Windows RunTime
  • WINS—Windows Internet Name Service
  • WLAN—Wireless Local Area Network
  • WMA—Windows Media Audio
  • WMI— Windows Management Instrumentation
  • WMV—Windows Media Video
  • WNS—Windows Push Notification Service
  • WOL—Wake-on-LAN
  • WOR—Wake-on-Ring
  • WORA—Write once, run anywhere
  • WORE—Write once, run everywhere
  • WORM—Write Once Read Many
  • WPA—Wi-Fi Protected Access
  • WPAD—Web Proxy Autodiscovery Protocol
  • WPAN—Wireless Personal Area Network
  • WPF—Windows Presentation Foundation
  • WS-D—Web Services-Discovery
  • WSDL—Web Services Description Language
  • WSFL—Web Services Flow Language
  • WUSB—Wireless Universal Serial Bus
  • WWAN—Wireless Wide Area Network
  • WWID—World Wide Identifier
  • WWN—World Wide Name
  • WWW—World Wide Web
  • WYSIWYG—What You See Is What You Get
  • WZC—Wireless Zero Configuration

X
  • XAG—XML Accessibility Guidelines
  • XAML—eXtensible Application Markup Language
  • XDM—X Window Display Manager
  • XDMCP—X Display Manager Control Protocol
  • XCBL—XML Common Business Library
  • XHTML—eXtensible Hypertext Markup Language
  • XILP—X Interactive ListProc
  • XML—eXtensible Markup Language
  • XMMS—X Multimedia System
  • XMPP—eXtensible Messaging and Presence Protocol
  • XMS—Extended Memory Specification
  • XNS—Xerox Network Systems
  • XP—Cross-Platform
  • XP—Extreme Programming
  • XPCOM—Cross Platform Component Object Model
  • XPI—XPInstall
  • XPIDL—Cross-Platform IDL
  • XPS— XML Paper Specification
  • XSD—XML Schema Definition
  • XSL—eXtensible Stylesheet Language
  • XSL-FO—eXtensible Stylesheet Language Formatting Objects
  • XSLT—eXtensible Stylesheet Language Transformations
  • XSS—Cross-Site Scripting
  • XTF—eXtensible Tag Framework
  • XTF—eXtended Triton Format
  • XUL—XML User Interface Language
  • XVGA—Extended Video Graphics Adapter

Y
  • Y2K—Year Two Thousand
  • YAAF—Yet Another Application Framework
  • YACC—Yet Another Compiler Compiler
  • YAGNI—You Aren't Gonna Need It
  • YAML—YAML Ain't Markup Language
  • YARN—Yet Another Resource Negotiator
  • YaST—Yet another Setup Tool

Z
  • ZCAV—Zone Constant Angular Velocity
  • ZCS—Zero Code Suppression
  • ZIF—Zero Insertion Force
  • ZIFS—Zero Insertion Force Socket
  • ZIP—ZIP file archive
  • ZISC—Zero Instruction Set Computer
  • ZOI—Zero One Infinity
  • ZOPE—Z Object Publishing Environment
  • ZMA—Zone Multicast Address
  • ZPL—Z-level Programming Language

See also

References
  • "Computing Acronyms and Abbreviations". All Acronyms. Retrieved 2008-07-12.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.