The NetBSD Project

Preferred license: New BSD license
NetBSD is a free, secure, and highly portable Unix-like Open Source operating system available for many platforms, from 64-bit Opteron machines and desktop systems to handheld and embedded devices. Its clean design and advanced features make it excellent in both production and research environments, and it is user-supported with complete source. Many applications are easily available through pkgsrc, the NetBSD Packages Collection.
 
Current Projects
by Zachary Wegner, mentored by Alistair Crooks
by Patrick Mahoney, mentored by Jared D. McNeill
by Amitai Schlair, mentored by Johnny Lam
by Martin Schütte, mentored by Christos Zoulas
by Arnaud Ysmal, mentored by Antti Kantee
by Jason W. Beaudoin, mentored by Petra Zeidler
by Łukasz Strzygowski, mentored by Julio Manuel Merino Vidal
by Arnaud Lacombe, mentored by David Young
by Marek Dopiera, mentored by Aymeric Vincent
by Adam Hamšík, mentored by Brett Lymn
by Jeremy Morse, mentored by Jared D. McNeill
by Adam Burkepile, mentored by Philip Nelson