"As a UC Berkeley graduate student, Joy worked for Fabry's Computer Systems Research Group CSRG in managing the BSD support and rollout where many claim he was largely responsible for managing the authorship of BSD UNIX, from which sprang many modern forms of UNIX, including FreeBSD, NetBSD, and OpenBSD. Apple Inc. has based much of the Mac OS X kernel and OS Services on the BSD technology.
Some of his most notable contributions were the vi editor, NFS, and csh. Joy's prowess as a computer programmer is legendary, with an oft-told anecdote that he wrote the vi editor in a weekend. Joy denies this assertion.[2]"
Exactly my thought when I read this. IIRC he wrote one of the early TCP/IP implementations as well, which a lot of OS' still use a derivative of. And dns and mail rely upon.
The wikipedia article links specifically to a sadly abandoned project that Salon had years ago to document the free software revolution.
"As a UC Berkeley graduate student, Joy worked for Fabry's Computer Systems Research Group CSRG in managing the BSD support and rollout where many claim he was largely responsible for managing the authorship of BSD UNIX, from which sprang many modern forms of UNIX, including FreeBSD, NetBSD, and OpenBSD. Apple Inc. has based much of the Mac OS X kernel and OS Services on the BSD technology.
Some of his most notable contributions were the vi editor, NFS, and csh. Joy's prowess as a computer programmer is legendary, with an oft-told anecdote that he wrote the vi editor in a weekend. Joy denies this assertion.[2]"
http://en.wikipedia.org/wiki/Bill_Joy