PlanNine

Wiki has several versions of Plan9 to choose from:

• PlanNineFromBellLabs is an OpenSource OperatingSystem.
• PlanNineFromUserSpace is a port of many PlanNineFromBellLabs utilities to other unix OperatingSystems -- Linux (x86, PowerPC, and ARM), FreeBSD (x86), Mac OS X (Power PC), NetBSD (x86 and PowerPC), OpenBSD (x86 and PowerPC), SunOS (Sparc) -- NotWindows
• PlanNineFromOuterSpace is a campy EdWood ScienceFictionMovie.
• PlanNinePublishing is a online comics to dead tree publisher.