This version allows unlimited replay for all uses, as long as copyrights and licence warranty exclusions are maintained. The license also contains a clause limiting the use of contributors` names for the approval of a derivative work without specific permission. Two variants of the license, new BSD License/Modified BSD License (3-Clause), [6] and simplified BSD License/FreeBSD License (2-clause)[8] were verified by the Free Software Foundation as free licenses compatible with the GPL and verified by the Open Initiative as open source licenses. [3] The original BSD license with 4 clauses was not accepted as an open source license and, although the original is considered by the FSF to be a free software license, the FSF considers that it is not compatible with the GPL under the advertising clause. [2] BSD () BSD license, berkeley software distribution license – . However, we accept that there are compelling reasons why otherwise licensed software may be included in the FreeBSD source tree. Today, this original license is sometimes called “BSD-old” or “4-clause BSD.” The ISC license is functionally equivalent and is supported by the OpenBSD project as a licensing model for new contributions. [13] History: The original license used on BSD Unix had four clauses. The advertising clause (the third of the four clauses) required you to recognize the use of the U.C Berkeley code in your advertisement for a product using that code.

July 1999 officially cancelled by the director of the Office of Technology Licensing at the University of California. It notes that Article 3 is “totally removed.” The license for four clauses was not approved by OSI. The license below does not contain the advertising clause. The SPDX database contains some additional BSD license variants. For example:[16] In all BSD licenses, is the organization of the or only the and is the year of copyright. As published in BSD, is “Regents of the University of California,” and ist “University of California, Berkeley.” The original BSD license contained a clause that was not found in subsequent licenses, known as the “advertising clause.” This clause eventually became controversial by requiring the authors of all works from a BSD-licensed work to include the recognition of the original source in all promotional materials. This was clause 3 in the original text of the license:[4] The BSD family of licenses is one of the oldest and most widespread in the FOSS ecosystem. In addition, many new licenses have been derived or inspired by BSD licenses. Many FOSS software projects use a BSD license, such as the BSD operating system family (FreeBSD, etc.), Google Bionic or Toybox. Starting in 2015[update], the BSD 3 clause licensed it took fifth place under Black Duck software[21] and sixth after GitHub data.

[22] With the exception, no BSD-licensed component can be replaced by other licensed software.