Public 9k (and derivatives) releases

9k
started in 2005
Jim McKie

Cell Port (PPC64)
(derive from 9k)
2007-04-22 - 2008-09-18
Charles Forsyth (Paul A. Lalonde, Mahmoud Aljammal)
http://code.google.com/p/plan9-ceb

HARE (Blue Gene/P, PowerPC 440)
(derive from 9k)
started in 2006
2009-11-17 - 2012-01-10
Eric Van Hensbergen, Ron Minnich, Jim McKie, Charles Forsyth
https://bitbucket.org/ericvh/hare

NIX (AMD64) (first release by Noah Evans)
(derive from 9k)
2011-06-02 - 2011-06-29
Ron Minnich (Francisco Ballesteros, Noah Evans, Charles Forsyth, Gorka Guardiola, Jim McKie, Enrique Soriano)
https://bitbucket.org/npe/nix

NIX (AMD64) (second release by Ron Minnich)
(derive from first release of NIX)
2011-07-27 - 2012-05-15
Ron Minnich (Francisco Ballesteros, Noah Evans, Charles Forsyth, Gorka Guardiola, Jim McKie, Enrique Soriano, John Floren, Akshat Kumar, Erik Quanstrom...)
http://code.google.com/p/nix-os

Lsub NIX (AMD64)
(derive from Ron Minnich NIX)
2012-04-16 - 2013-01-13
Francisco Ballesteros (...)
http://lsub.org/ls/nix.html

9atom NIX (AMD64)
(derive from Francisco Ballesteros NIX)
2013-01-? - 2016-?-?
Erik Quanstrom
http://www.9atom.org/

NxM (AMD64)
(derive from Ron Minnich NIX, with changes from Francisco Ballesteros NIX)
2012-04-27 - 2013-03-29
Ron Minnich (John Floren, Akshat Kumar)
http://nxm.coreboot.org/
https://github.com/rminnich/NxM

9k update (AMD64)
(private, then released on 9legacy.org on 2016-03-12)
Jim McKie (Francisco Ballesteros, Gorka Guardiola, Charles Forsyth, David du Colombier)
2013-02 - 2013-06

Lsub NIX mark IV (AMD64)
(derive from latest 9k)
2013-09-18
Francisco Ballesteros, Gorka Guardiola
http://lsub.org/ls/nix.html

Charles Forsyth 9k (AMD64)
(derive from latest 9k)
2014-06-20 - still maintained
Charles Forsyth
https://github.com/slowly-code-a-world/enhanced-plan9 (first release)
https://code.google.com/p/plan9-9k (old)
https://bitbucket.org/forsyth/plan9-9k (old name)
https://bitbucket.org/forsyth/plan9-9exp

9legacy 9k (AMD64)
(derive from latest 9k)
2016-03-12 - still maintained
David du Colombier
http://9legacy.org/

Geoff Collyer 9k (AMD64, RISC-V)
(derive from Bell Labs' /sys/src/9k as of March 2014)
2019-07-07 - still maintained
Geoff Collyer