Editing Plan 9 from Bell Labs (section)

==== Derivatives and forks ====
* [[Inferno (operating system)|Inferno]] is a descendant of Plan 9, and shares many design concepts and even source code in the kernel, particularly around devices and the Styx/9P2000 protocol. Inferno shares with Plan 9 the Unix heritage from Bell Labs and the [[Unix philosophy]]. Many of the command line tools in Inferno were Plan 9 tools that were translated to [[Limbo (programming language)|Limbo]].
* ''9atom''<ref>{{cite web |title=9atom |url=http://www.9atom.org/ |url-status=usurped |archive-url=https://web.archive.org/web/20201111224911/http://www.9atom.org/ |archive-date=11 November 2020}}</ref> augments the Plan 9 distribution with the addition of a 386 [[Physical Address Extension|PAE]] kernel, an amd64 cpu and terminal kernel, nupas, extra pc hardware support, IL and Ken's fs.<ref>{{cite web |title=9atom |url=https://quanstro.net/plan9/9atom/ |website=quanstro.net |access-date=15 June 2023 |archive-url=https://web.archive.org/web/20180609134709/https://quanstro.net/plan9/9atom/ |archive-date=9 June 2018}}</ref><ref>{{cite web |title=9atom |url=https://archiveos.org/9atom/ |website=ArchiveOS |access-date=15 June 2023 |date=3 May 2022}}</ref>
* ''9front''<ref>{{Cite web|url=http://9front.org/|title=9FRONT.ORG THE PLAN FELL OFF|website=9front.org}}</ref> is a fork of Plan 9. It was started to remedy a perceived lack of devoted development resources inside Bell Labs, and has accumulated various fixes and improvements.
* ''9legacy''<ref>{{Cite web|url=http://www.9legacy.org/|title=9legacy|website=www.9legacy.org}}</ref> is an alternative distribution. It includes a set of patches based on the current Plan 9 distribution.
* ''Akaros''<ref>{{Cite web|url=http://akaros.org/|title=Akaros|website=akaros.org}}</ref> is designed for many-core architectures and large-scale SMP systems.
* ''Harvey OS''<ref>{{Cite web|url=https://harvey-os.org/|title=Harvey OS|website=harvey-os.org}}</ref> is an effort to get the Plan 9 code working with gcc and clang.
* ''JehanneOS''<ref>{{cite web|url=https://gitea.it/JehanneOS|title=JehanneOS|date=17 November 2021 }}</ref> is an experimental OS derived from Plan 9. Its userland and modules are mostly derived from 9front, its build system from Harvey OS, and its kernel is a fork of the Plan9-9k 64-bit Plan9 kernel.
* ''NIX''<ref>{{cite web|url=http://lsub.org/ls/nix.html|title=NIX|date=21 November 2020}}</ref>{{Better source needed|reason=Source is a self-published blog|date=June 2023}} is a fork of Plan9 aimed at multicore systems and cloud computing.
* ''node9''<ref>{{cite web|url=https://github.com/jvburnes/node9|title=node9|website=[[GitHub]]|date=14 January 2022}}</ref> is a scripted derivative of Plan9/Inferno that replaces the [[Limbo (programming language)|Limbo]] programming language and DIS virtual machine with the [[Lua (programming language)|Lua]] language and LuaJit virtual machine. It also replaces the Inferno per-platform hosted I/O with Node.js' libuv eventing and I/O for consistent, cross-platform hosting. It's a proof-of-concept that demonstrates that a distributed OS can be constructed from per-process namespaces and generic cloud elements to construct a single-system-image of arbitrary size.
* ''Plan B''<ref>{{cite web|url=https://lsub.org/plan-b/|title=Plan B|date=26 November 2020}}</ref> designed to work in distributed environments where the set of available resources is different at different points in time. Originally based on the third edition Plan 9 kernel, Plan B was moved into user space to run on current Plan 9 systems.<ref>{{cite web |title=Download |url=https://9p.io/wiki/plan9/download/ |website=Plan 9 wiki |publisher=9p.io |access-date=15 June 2023}}</ref><ref name="BF03192352">{{cite journal |last1=Ballesteros |first1=Francisco J. |last2=Muzquiz |first2=Gorka Guardiola |last3=Algara |first3=Katia Leal |last4=Soriano |first4=Enrique |last5=de las Heras Quirós |first5=Pedro |last6=Castro |first6=Eva M. |last7=Leonardo |first7=Andres |last8=Arévalo |first8=Sergio |title=Plan B: Boxes for networked resources |journal=Journal of the Brazilian Computer Society |date=February 2004 |volume=10 |issue=1 |pages=33–44 |doi=10.1007/BF03192352 |s2cid=6766935 |doi-access=free }}</ref><ref name="PERCOM.2006.43">{{cite book |last1=Ballesteros |first1=F.J. |last2=Soriano |first2=E. |last3=Leal |first3=K. |last4=Guardiola |first4=G. |title=Fourth Annual IEEE International Conference on Pervasive Computing and Communications (PERCOM'06) |chapter=Plan B: An Operating System for Ubiquitous Computing Environments |date=2006 |pages=126–135 |doi=10.1109/PERCOM.2006.43 |isbn=0-7695-2518-0 |s2cid=1730651 |chapter-url=<!-- https://www.semanticscholar.org/paper/337e4193407acf87566c98cbd2d7d42c9add8870 -->https://www.researchgate.net/publication/4228234 |access-date=15 June 2023}}</ref>