Audio/music

• TinyScheme - TinyScheme
• aa - A tiny, embeddable Lisp-like language
• cfront - Archaic C++ pre-compiler
• Go - The Go programming language
• Idris 2 - A dependently typed programming language, pre-alpha port
• Lua - Lua from Redis
• Lua (lu9) - Lua from kvik
• Fennel - Fennel via lu9 (thanks grimmware)
• Myrddin - Systems language by Ori Bernstein
• nhc98 - Haskell compiler
• Ocaml - Ocaml
• Python 2
• Scheme 9 - Scheme 9 from Empty Space
• Tcl - Tcl port by fgb
• uxn - A small stack machine
• c4 - C in 4 functions
• Chibi Scheme - A small embeddable scheme implementation
• clox9 - Port of Nystrom's clox implementation of the Lox language to Plan9
• Lua (5.0.2)
• Ocaml - Ocaml
• APL

• Modding Rio - Tutorials on how to add a wallpaper and change colors.
• Plan9 GUI Examples - Tutorials to learn about GUI development on Plan9.
• Plan9 Desktop Guide - a all in one guide to get started with Plan9.

Sites

• cat-v
• 9p.mom/f - Files for hacking together bootable things without easy access to a 9front system
• NOPE NOPE NOPE - qwx's site with 9front usage tips and software

Papers

• Plan 9 From Bell Labs - Overview of the Plan9 system itself
• Security in Plan 9 - Overview of the security architecture of Plan9

Manuals

• aiju's manuals
• cat-v's manuals

Third Edition

• Plan9 3e FAQ - FAQ for 3rd edition release

Second Edition

• Plan9 2e FAQ - FAQ for 2nd edition release
• Plan9 Tips and Information

First Edition

• Plan 9 from Bell Labs Programmer's Manual (1st Edition)

Talks

• The Name Game - Talk on Plan9 and Inferno by Charles Forsyth
• Plan 9: Not Dead, Just Resting - Talk on Plan9 and 9front by Ori Bernstein
• The Name Game - Talk on Plan9 and Inferno by Charles Forsyth
• Plan 9: Not Dead, Just Resting - Talk on Plan9 and 9front by Ori Bernstein

Utilities

• color9 - Color picker
• fontsel - Font selector
• xmpp - XMPP client
• disco - Discord client
• git9 - Git implementation
• unionfs - Deep union file server

Editors

• 9vim - A port of vim to Plan9
• Phil9's fork - A version with additional features and bug fixes

Graphics

• Moogle - A simple 3D wireframe editor
• whiteboardfs - A collaborative drawing file system

Audio/music

• neindaw - DAW for Plan 9
• orca - Live Programming Environment
• treason - Video player
• zuke - Music player
• wrec - Screen and window recorder
• mpl - Music Player
• ytfs - File system for playing youtube audio

Audio/music

• libtags - A cross-platform library for reading tags
• microui - Tiny immediate-mode UI library
• npe

Audio/music

• 9ants - Mycroftiv's fork (of 9front) featuring a modified kernel and custom namespace control tooling
• 9atom (deprecated?) - Erik Quanstrom's fork (mirror)
• 9front - Fork featuring new protocols, file systems, and greatly expanded hardware support
• 9legacy - Fork which continues maintaining a Bell Labs-like source base
• 9pi - Port of 9legacy to the Raspberry Pi
• Harvey - An MIT-licensed OS based on Plan 0
• JehanneOS - Giacomo Tesio's fork ([Gitea home](https://gitea.it/JehanneOS/jehanne))
• Nix (deprecated) - A fork of Plan 9 focused on high performance parallel cloud computing

Libraries

• c9 - A low-level 9p client and server implementation

Operating Systems

• Akaros - Support for parallel and high-performance applications and to scale to a large number of cores
• Inferno - Register-oriented virtual machine operating system which can run natively and hosted, leverages 9p heavily as "styx"
• Redox - A Unix-like operating system written in Rust