We are still actively working on the spam issue.
Plan 9
Plan9 from Bell Labs is an OS that is new to /g/.There are several "types" of Plan9. Plan 9 was created by the original creator of unix at the same place and is intended to fix ingerent flaws in the design of unix.
Plan 9 Was open-sourced in 2002
Distributions
Plan9, the regular distribution, the fourth edition from bell labs.
9legacy, which is several patches on top of the regular distro.
9atom augments the plan 9 distribution with the addition of a 386 PAE kernel, an amd64 cpu and terminal kernel, nupas, extra pc hardware support, IL and Ken's fs.
Inferno is a distributed operating system started at Bell Labs, but is now developed and maintained by Vita Nuova Holdings as free software.
Forks
9front is an active, community-led fork of plan9.