What Is...Linux?
- Definition of Linux and description of its history, relation to GNU and other UNIX systems, and links to related sites.
- http://whatis.techtarget.com/definition/0,289893,sid9_gci212482,00.html

Linux International
- Non-profit association of groups, corporations, and others that work toward promoting and helping direct the growth of the Linux operating system and community.
- http://li.org/

Linux.com
- A portal from SourceForge offering news, articles, and a "how to" knowledgebase.
- http://www.linux.com/

The Linux Counter
- Get yourself and your computer counted among the Linux users.
- http://counter.li.org/

FreeOS
- Provides articles, documentation, links to software, and news about Linux and other operating systems.
- http://www.freeos.com/

"Linux was invented here"
- University of Helsinki - Department of Computer Science. Information about Linux and get the latest kernel versions and recent Linux kernel mailing list archives.
- http://www.cs.helsinki.fi/linux/