Magic Kit: The definitive HuC6280 Assembler package for DOS, Linux and RiscOS. Includes thorough technical information about PCE/TGX internals, as well as in-depth tutorials on coding sprite routines. Maintained by David Michel

MAME: The official Multiple Arcade Machine Emulator site presents the project and offers downloads

MESS: Official homepage with W.I.P., CVS server, bug tracking system, screen shots, system information, and message board