The phrase BSD licenses represents a family of permissive free software licenses. The original was used for the Berkeley Software Distribution, a Unix-like operating system after which the license is named.The original owners of BSD were the Regents of the University of California because BSD was first written at the University of California, Berkeley. The first version of the license was revised, and the resulting licenses are more properly called modified BSD licenses.Two variants of the license, the New BSD License, and the Simplified BSD License have been verified as Free software licenses by the Free Software Foundation, and have been vetted as Open source licenses by the Open Source Initiative, while the original has not.The licenses have fewer restrictions compared to other free software licenses such as the GNU General Public License or even the default restrictions provided by copyright, putting works licensed under them relatively closer to the public domain.

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