Historical Permission Notice and Disclaimer

The Historical Permission Notice and Disclaimer (HPND)[3] is an open source license, approved by the Open Source Initiative (OSI) and verified as GPL-compatible by the Free Software Foundation.[2] It is unique among the OSI's licenses because of the choices it allows in its construction; it lets the licensor pick anywhere from 0-2 warranty disclaimers, whether they want to prohibit the author's name from being used in publicity or advertising surrounding a distribution (like in the BSD License), and other spelling and grammar options. Besides this, the license can be almost functionally identical to the new 3-clause BSD License (if the option for the no-promotion clause is exercised), or the MIT License (if the option for the no-promotion clause is not exercised).

Historical Permission Notice and Disclaimer
AuthorBruce Dodson[1]
Latest versionn/a
PublisherDr. Bruce Dodson
Published29 November 2002
SPDX identifierHPND
FSF approvedYes[2]
OSI approvedYes
GPL compatibleYes[2]
CopyleftNo
Linking from code with a different licenceYes
Websitehttp://opensource.org/licenses/HPND
DeprecatedYes[3]

Variants of this license are in use primarily in older software, including the original BSD kernel. Today, it is most popular to choose either the new 3-clause BSD License or the MIT License to meet the licensing needs of the developer.

This is the only OSI-certified license (excluding the public domain) that can lack a disclaimer of warranty.

References
  1. Dodson, Bruce (29 November 2002). "discuss: approval request: "Historical Permission Notice and Disclaimer"". license-discuss (Mailing list).
  2. "Historical Permission Notice and Disclaimer". Various Licenses and Comments about Them. Free Software Foundation. Retrieved 29 May 2015.
  3. Dodson, Bruce (29 November 2002). "Historical Permission Notice and Disclaimer (HPND)". Open Source Initiative. Retrieved 24 January 2014.
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