Comparison of optical character recognition software

This comparison of optical character recognition software includes:

• OCR engines, that do the actual character identification
• Layout analysis software, that divide scanned documents into zones suitable for OCR
• Graphical interfaces to one or more OCR engines
• Software development kits that are used to add OCR capabilities to other software (e.g. forms processing applications, document imaging management systems, e-discovery systems, records management solutions)

Sortable table

Name	Founded year	Latest stable version	Release year	License	Online	Windows	Mac OS X	Linux	BSD	Android	iOS	Programming language	SDK?	Languages	Fonts	Output Formats	Notes
Google Drive OCR or Google Cloud Vision			2015	Proprietary	Yes	Browser	Browser	Browser	Unknown	?	?	Unknown	Yes	200+	All fonts	text	Google blog post [1] [2]
Tesseract	1985	4.1.1	2019	Apache	No	Yes	Yes	Yes	Yes	?	?	C++, C	Yes	100+[3]	Any printed font	Text, ALTO, hOCR,[4] PDF, others with different user interfaces[5] or the API	Created by Hewlett-Packard; under further development by Google[6]
ABBYY FineReader	1989	15	2019	Proprietary	Yes	Yes	Yes	Yes	Yes	?	?	C/C++	Yes	192[7]	All fonts	DOC, DOCX, XLS, XLSX, PPTX, RTF, PDF, HTML, CSV, TXT, ODT, DjVu, EPUB, FB2[8]	ABBYY also supplies SDKs for embedded and mobile devices. Professional, Corporate and Site License Editions for Windows, Express Edition for Mac.[9]
E-aksharayan	2010					Yes	No	Yes	No	?	?			14		RTF, TXT, BRL
Asprise OCR SDK	1998	15	2015	Proprietary	Yes	Yes	Yes	Yes	Yes	?	?	Java, C#,VB.NET, C/C++/Delphi	Yes	20+[10]	?	Plain text, searchable PDF, XML[11]	Java, C#, VB.NET, C/C++/Delphi SDKs for OCR and Barcode recognition on Windows, Linux, Mac OS X and Unix.[12]
AnyDoc Software	1989	?	?	Proprietary	No	Yes	No	No	No	?	?	VBScript	?	?	?		Works with structured, semi-structured, and unstructured documents.
ConPDS OCR Engine[13]	2014	2020.12	2020	Proprietary	No	Yes	No	Yes	No	Yes	Yes	C/C++	No, Plug-n-Play	?	BIC (ISO 6346 standard) and ILU (EN 13044-1 standard) supported fonts	JSON	ConPDS supplies custom trained OCR engine for the shipping and transportation industry. Supported by following programming languages: C/C++, C#, VB.NET, Java, and more on request.
CuneiForm	1996	1.1	2011-04-19	BSD variant	No	Yes	Yes	Yes	Yes	?	?	C/C++	Yes	28	Any printed font	HTML, hOCR, native, RTF, TeX, TXT[14]	Enterprise-class system, can save text formatting and recognizes complicated tables of any structure
Dynamsoft OCR SDK	2003	8.2	2012	Proprietary	Yes	Yes	No	No	No	?	?	C/C++	Yes	40+[15]	?	PDF, TXT
OmniPage	1970s	19.2	2015	Proprietary	Yes	Yes	Yes	Yes	No	?	?	C/C++, C#[16]	Yes	125[17]	Machine and handprinted fonts	DOC/DOCX XLS/XLSX PPTX RTF PDF PDF/A Searchable PDF HTML Text XML ePUB MP3	Product of Nuance Communications
Microsoft Office OneNote 2007	2011	?	2007	Proprietary	No	Yes	No	No	No	?	?	?	?	?	?
GOCR	2000	0.52[18]	2018-10-15	GPL	Yes[19]	Yes	Yes	Yes	Yes	?	?	C	?	20+	?
Ocrad	?	0.26[20]	2017-03-31	GPL	Yes	No	Yes	Yes	Yes	?	?	C++	Yes	Latin alphabet	?		Command line
SmartScore	1991	10.5.8	2015-07	Proprietary	No	Yes	Yes	No	No	?	?	?	?	?	?		For musical scores
Microsoft Office Document Imaging	?	Office 2007	2007	Proprietary	No	Yes	No	No	No	?	?	?	?	?	?		Uses OmniPage
Puma.NET	?	?	2009-10-29	BSD	No	Yes	No	No	No	?	?	C#	Yes	28	Any printed font		.NET OCR SDK based on Cognitive Technologies' CuneiForm recognition engine. Wraps Puma COM server and provides simplified API for .NET applications
ReadSoft	?	?	?	Proprietary	No	Yes	No	No	No	?	?	?	?	?	?		Scan, capture and classify business documents such as invoices, forms and purchase orders integrated with business processes.
Scantron	?	?	?	Proprietary	No	Yes	No	No	No	?	?	?	?	?	?		For working with localized interfaces, corresponding language support is required.
OCRFeeder	2009-03	0.8.1	2014-12-22	GPL	No	No	No	Yes	No	?	?	Python	?	?	?		Features a full user interface and has a command-line tool for automatic operations. Has its own segmentation algorithm but uses system-wide OCR engines like Tesseract or Ocrad
OCRopus	2007	1.3.3	2017-12-16	Apache	No	No	Yes	Yes	Yes	?	?	Python	?	All languages using Latin script (other languages can be trained)	Normal Latin script and Fraktur (other scripts can be trained)	TXT, hOCR,[21] PDF[22]	Pluggable framework under active development, used for Google Books
Name	Founded year	Latest stable version	Release year	License	Online	Windows	Mac OS X	Linux	BSD	Android	iOS	Programming language	SDK?	Languages	Fonts	Output Formats	Notes

Evaluation

An analysis of the accuracy and reliability of the OCR packages Google Docs OCR, Tesseract, ABBYY FineReader, and Transym, employing a dataset including 1227 images from 15 different categories concluded Google Docs OCR and ABBYY to be performing better than others.[23]

References

1. Dmitriy Genzel; Ashok Popat (May 6, 2015). "Paper to Digital in 200+ languages".
2. Ashok Popat (Sep 4, 2015). "IEEE SPS: Optical Character Recognition for Most of the World's Languages".
3. Based on count of language training files for version 3.04. Available at the download page.
4. Usage explained in the Tesseract Readme and FAQ
5. Such as ODF with OCRFeeder
6. "GitHub - tesseract-ocr/tesseract: Tesseract Open Source OCR Engine (main repository)". Retrieved 2018-11-05.
7. "ABBYY FineReader 14: Technical Specifications". Finereader.abbyy.com. Retrieved 2017-02-23.
8. "ABBYY FineReader 11: Technical Specifications". Finereader.abbyy.com. Retrieved 2013-09-12.
9. "Top OCR Software". Ocrworld.com. 2010-03-30. Archived from the original on 2017-02-23. Retrieved 2013-09-12.
10. "Asprise OCR SDK Features". asprise.com. Retrieved 2014-06-21.
11. "Asprise Java OCR Library Features". asprise.com. Retrieved 2014-06-21.
12. "Asprise Java, C#/VB.NET OCR API". asprise.com. 2015-11-19. Retrieved 2015-11-19.
13. "ConPDS Homepage".
14. Debian manual page for Cuneiform for Linux version 1.1.0
15. "OCR SDK Language Packages Download". Dynamsoft.com. Retrieved 2013-09-12.
16. "OmniPage CSDK - OCR Document Capture Toolkit | Document Imaging & OCR". Nuance. Archived from the original on 2010-08-24. Retrieved 2013-09-12.
17. "OmniPage Standard Document Conversion". Nuance. Archived from the original on 2014-03-13. Retrieved 2014-02-25.
18. "GOCR Homepage". wasd.urz.uni-magdeburg.de. Retrieved 2018-10-17.
19. "GOCR". Jocr.sourceforge.net. Retrieved 2013-09-12.
20. Diaz, Antonio (2015-04-16). "GNU Ocrad 0.26 released" (Mailing list). info-gnu.
21. OCRopus includes the ocropus-hocr tool which produces hOCR from the recognition results.
22. In combination with the hocr-tools
23. Assefi, Mehdi (2016-12-01). "OCR as a Service: An Experimental Evaluation of Google Docs OCR, Tesseract, ABBYY FineReader, and Transym". ResearchGate. Retrieved 2019-01-31.