InfiniteOS An open source OS for the Mac. No real GUI yet, it is more of a CLI. http://ios.sourceforge.net/

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/

legOS Unofficial, free Lego OS: open-source embedded OS for LEGO Mindstorms (Lego bricks with brains). Compared to the standard software, it has far better performance and flexibility. http://www.noga.de/legOS/

Free Linux CD Project Volunteers who send used Linux and other open source OS CDs to people who need them. Please contribute your CDs or get a Free CD. http://freelinuxcd.org/

Corel's Open Source Development Community Corel shows a strong commitment to the Open Source community and devotes large resources to projects such as setup UI, WINE, printing technologies. http://opensource.corel.com/

STORM New free French OS with source! http://members.aol.com/StormExplo/

LittleOS New operating system. Goal: to be stable and easy to use. Everyone can join. In Français and English. [Open Source] http://littleos.free.fr/

BOS Starting, in planning stage, with bootloader. Mix of DOS and Unix. Goals: modular, fast. Kernel is pmode, command line is rmode. Written in assembly (NASM), C, C++ (GCC). [Open Source, GNU] http://bos.sourceforge.net/

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, and lack of radical advancement and innovation due to fear of the producer in alienating its biggest customers. http://kosh.convergence.org/

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/

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/

Bill Currie kernel DJGPP-built OS kernel. Does little so far, but may be used as starting point. Needs working GNU C/C++ capable DJGPP sed, djasm, Bison, djp file compression. http://www.taniwha.org/

Free Operating Systems Short, annotated, alphabetically sorted list and links, part of larger system. http://www.cs.arizona.edu/people/bridges/os/free.html

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

Stupid OS OS from India, coded in assembly and C; news, source and binary downloads. [Open Source] http://www.geocities.com/stupidosproject/

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

Colelus By Daybo Logic. Goals: make a programmers' OS, usable by all, not as complex as Unix, NT compatible, but stable and free. Now ended; but all code, tools, libraries are archived for free download. [Open Source] http://www.daybologic.co.uk/colelus/

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

Japan, China, Korea May Develop Windows Replacement Set to agree to jointly develop new OS as alternative to Microsoft Windows, Japan media reports; if plan matures, the 3 nations will likely build on open source OS, such as Linux, and develop low cost, trustworthy system. [Reuters] http://www.reuters.com/locales/newsArticle.jsp;?type=technologyNews&locale=en_IN&storyID=3363256

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