Historical Permission Notice and Disclaimer
Template:Infobox software license The Historical Permission Notice and Disclaimer (HPND)[1] is an open source license, approved by the Open Source Initiative (OSI) and verified as GPL-compatible by the Free Software Foundation.[2]
Characteristics
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).
Variants of this license are in use primarily in older software, including the original BSD kernel. Today,Template:When 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.
The license was deprecated by its author, Bruce A. Dodson, prior to 24 September 2009.[3]