Theo de Raadt notable work NetBSD
NetBSD
In 1993, Theo de Raadt founded NetBSD with Chris Demetriou, Adam Glass, and Charles Hannum, who felt frustrated at the poor quality of 386BSD and believed an open development model would be better.   386BSD was derived from the original University of California Berkeley's 4.3BSD release, while the new NetBSD project would merge relevant code from the Networking/2 and 386BSD releases.
The new project focused on clean, portable, correct code, with the goal of producing a unified, multi-platform, production-quality BSD operating system.
The first NetBSD source code repository was established on March 21, 1993 and the initial release, NetBSD 0.8, was made in April 1993.  This was derived from 386BSD 0.1 plus the version 0.2.2 unofficial patchkit, with several programs from the Net/2 release missing from 386BSD re-integrated, and various other improvements.  In August 1993, NetBSD 0.9 was released, which contained many enhancements and bug fixes. This was still a PC-platform-only release, although by this time work was underway to add support for other architectures.
NetBSD 1.0 was released in October, 1994.  This was the first multi-platform release, supporting the IBM PC compatible, HP 9000 Series 300, Amiga, 68k Macintosh, Sun-4c series and PC532.  Also in this release, the legally encumbered Net/2-derived source code was replaced with equivalent code from 4.4BSD-lite, in accordance with the  USL v BSDi lawsuit settlement.  De Raadt played a vital role in the creation of the SPARC port, implementing much of the initial code together with  Chuck Cranor.
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