Plan 9 (operating system)

Plan 9 is an operating system descended from Unix and developed by Bell Laboratories. It is not a Unix variant, but is very similar. Plan 9 explored several "simplifications" to the original Unix model that improved the experience of using and programming the system, notably in distributed multi-user environments. Plan 9 was a Bell Labs internal project for a number of years, but a public release was made in 1993, followed by a shrink-wrapped version in 1995. Bell lost commercial interest in the project in the later 1990s, and released a third version under a non-free license (but with source code available) in 2000, and finally under a new open source license in 2002. This is the 4th, and current, edition of the system.

External links

• Plan 9 homepage
• Plan 9 Overview
• Plan 9 Wiki
• plan9port A port of the bulk of the Plan 9 software and build environment to Unix systems.
• v9fs 9P file system support for Unix/Linux/*BSD
• srcgw Browseable full source code
• Steve Kotsopoulos Plan 9 page
• Russ Cox Plan 9 page
• Charles Forsyth's Plan 9 Pages
• Vita Nuova Plan 9 page
• Eric S. Raymond's take on why Plan 9 failed to usurp Unix