RISC OS/Projects

Compilers

 * GCC - The port of GNU Compiler Collection to RISC OS.
 * GCCSDK - Cross-compiler SDK for GCC covering aspects of RISC OS programming including the Autobuilder and porting tools.

Emulation

 * RPCEmu - Tom Walker's open source RiscPC Emulator.
 * QEMU - Cross-platform JIT emulating RISC OS binaries or RiscPC hardware.
 * PC - PC support software for Acorn second processor cards developed by Aleph1

Applications

 * AMPlayer - MP3 Player
 * CCres - Translation tool to extract and replace text in Template and Resource files.
 * Cretin - The 32bit IRC Client
 * Decor - Ultimate RISC OS backdrop changer
 * Firefox - The Mozilla Firefox browser port to RISC OS
 * Thump - Image thumbnail viewer
 * WinEd - Window layout (template) editor

Libraries

 * DeskLib - The easy to use Wimp programming C library for RISC OS.
 * ChoX11 - The X11 replacement library for running X-based applications under RISC OS

Translation and Documentation projects

 * StrongHelp - Manual viewer with programming and other manuals
 * RISC OS Translated - Discussion of language translation for RISC OS applications.