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The modified BSD license (in wide use today) is very similar to the license originally used for the BSD version of Unix. The BSD license is a simple license that merely requires that all code retain the BSD license notice if redistributed in source code format, or reproduce the notice if redistributed in binary format.
BSD was sponsored by DARPA until 1988, [3] which led to the implementation of ARPANET and later the TCP/IP stack to Unix by BSD, [4] which were released in BSD NET/1 in 1988. The codebase had been rewritten so much that as little as 5% of BSD contained original AT&T code, [4] and therefore NET/1 was released without an AT&T source license. [3]
FreeBSD is released under a variety of open-source licenses. The kernel code and most newly created code are released under the two-clause BSD license which allows everyone to use and redistribute FreeBSD as they wish. This license was approved by Free Software Foundation [121] and Open Source Initiative [122] as a Free Software and Open Source ...
Since it contained proprietary Unix code, it originally had to be distributed subject to AT&T licenses. The bundled software from AT&T was then rewritten and released as free software under the BSD license. However, this resulted in a lawsuit with Unix System Laboratories, the AT&T subsidiary responsible for Unix.
A permissive software license, sometimes also called BSD-like or BSD-style license, [1] is a free-software license which instead of copyleft protections, carries only minimal restrictions on how the software can be used, modified, and redistributed, usually including a warranty disclaimer.
BSD was originally derived from Unix, using the complete source code for Sixth Edition Unix for the PDP-11 from Bell Labs as a starting point for the First Berkeley Software Distribution, or 1BSD. A series of updated versions for the PDP-11 followed (the 2.xBSD releases).
Toybox is licensed using the permissive 0BSD license, where BusyBox uses the copyleft GNU General Public License, which led to different usage domains. BusyBox is mostly used in the copyleft FOSS domain, while Toybox is used mostly with permissive licensed projects and by commercial companies, e.g. Google's Android , [ 8 ] which is an explicit ...
OpenBSD is a security-focused, free software, Unix-like operating system based on the Berkeley Software Distribution (BSD). Theo de Raadt created OpenBSD in 1995 by forking NetBSD 1.0. [ 4 ] The OpenBSD project emphasizes portability , standardization , correctness , proactive security , and integrated cryptography .