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BSD
developed at University of California, Berkeley, as
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alterations
to AT&T Unix
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Initial
implementation of key Unix concepts, such as sockets,
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virtual
memory, and TCP/IP
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386BSD
developed to implement BSD Unix on x86
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architecture
in early 1990s
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FreeBSD
developed from 386BSD project (as did NetBSD)
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Now
has 250+ active developers, and 1,000's of contributors
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