Tokyo Inferno/Plan 9 Users Group
- Offers free accounts on public Plan 9 servers, documentation (some in Japanese), mirrors of Plan 9 software, and other resources.
- http://www.tip9ug.jp/en/index.html

IWP9 2006
- First International Workshop for Plan 9 and Inferno.
- http://lsub.org/iwp9/

Plan 9: The Way the Future Was
- Essay compares Plan 9 to Unix, parts of Plan 9 being implemented in Unix. From Eric S. Raymond's book The Art of Unix Programming.
- http://www.faqs.org/docs/artu/plan9.html

Reinventing Unix: An Introduction to the Plan 9 Operating System
- Technical paper abstract; link to main article, fee needed. Library Hi Tech; Emerald Group.
- http://www.emeraldinsight.com/Insight/viewContentItem.do?contentType=Article&contentId=861398

Plan 9 from Bell Labs
- Growing article, with links to many related topics. Wikipedia.
- http://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs

Geeks404.com: Plan 9 from Bell
- Bell releases Plan 9 as open source.
- http://linuxtoday.com/news_story.php3?ltsn=2000-06-18-005-04-NW-SW

Vita Nuova Holdings Ltd.
- Lead distributor for Plan 9 and Inferno OSs.
- http://www.vitanuova.com/plan9/main.html

Linux Today: Richard Stallman: The Problems of the Plan Nine License
- Comments about an old Plan 9 license that has been since replaced with an Open Source license.
- http://linuxtoday.com/news_story.php3?ltsn=2000-07-02-007-04-OP-LF-SW

Bell Labs Innovations: Bell Labs Unveils Open Source Release of Plan 9 Operating System
- The official press release.
- http://www.bell-labs.com/news/2000/june/7/2.html