Cefarix OS
   New project, intended as stable, fast, secure, reliable, easy to use, 32-bit protected mode OS for x86 and later PowerPC systems, open source, many features, graphical user interface (GUI), to replace Microsoft Windows, all versions.
   http://cefarix.sourceforge.net/

Free Linux CD Project
   Volunteers send used open source OS CDs (mostly Linux) to people who need them. Please contribute CDs or get a free CD.
   http://freelinuxcd.org/

FreeOS.com
   Resource Center for Free Operating Systems: articles, documentation, download sites, news, links, and anything related to all Free OSs.
   http://www.freeos.com/

GeckOS/A65
   Full-featured, preemptive multi-tasking/threading operating system for 6502. Implements some Unix-like features: signals, semaphores, relocatable fileformat, standard library, internet support via a type of simplified sockets, virtual consoles.
   http://www.6502.org/users/andre/osa/

HACK-RTOS
   Site devoted to the free, open-source rtos for the certain ZiLOG's microcontrollers. Namely: eZ80F91, eZ80F92 and eZ80F93.
   http://www.hack-rtos.ru

InfiniteOS
   OS for the Mac; no real GUI yet, it is more of a CLI. Open source.
   http://ios.sourceforge.net/

Japanese Manufacturers Back Off Proprietary OSes
   Japanese consumer electronics makers are backing away from efforts to move proprietary OSs into wider use, turning instead to open source OSs, mostly Linux. [EE Times]
   http://www.eetimes.com/sys/news/OEG20030123S0034

KOSH: Community Operating System and Hardware
   A concept that has been around in one form or another for many years. Its root is the failure of single companies to address all the needs of all its customers, lack of interactivity, communications, feedback and involvement between producer and consumer,
   http://kosh.convergence.org/

MacPorts
   Aims to provide an easy way to install various open-source software products on MacOS X.
   http://www.macports.org/

Managing the Complexity Curve
   Short paper explains ease, costs to maintain system changes over time. Two models contrasted: closed vs. open source. For closed source, the more one knows, the harder it gets. For open source, the more one knows, the easier it gets.
   http://shearer.org/en/writing/moreyouknow.html

Report: Japan, Korea, China to Break Windows Ties
   Plans for governments and private sector firms of China, Japan, South Korea, to jointly work together to develop new OS to rival Microsoft Windows to be unveiled later this week, according to 2 Japanese newspaper reports. [InfoWorld]
   http://www.infoworld.com/article/03/09/02/HNbreakties_1.html

WebRing: Free Operating Systems
   Several sites offering free OSs.
   http://u.webring.com/hub?ring=freeos