Emulators

Arcvic
Vic-20 emulator, written in assembler.
http://wwwhome.cs.utwente.nl/~schooten/software/arcvic.html

BeebIt
Freeware BBC Micro emulator for RISC OS, written by Michael Foot.
http://homepages.paradise.net.nz/mjfoot/bbc.htm

David McEwen's Emulators
Site contains emulators for a number of computers and consoles.
http://www.acornemus.freeserve.co.uk/

Deathzone Emulation
Reviews of emulators for RISC OS and other platforms.
http://www.thedeathzone.free-online.co.uk

GBoyEm
Gameboy emulator.
http://www.plasma.demon.co.uk/gameboy/gboyem.html

Hawk Software - V2600
Freeware RISC OS port of an Atari 2600 emulator.
http://www.mnementh.co.uk/v2600/

PC Engine
Highly optimised, with full sound support. Speed typically in excess of 60 fps.
http://www.plasma.demon.co.uk/pcengine/pce.html

PCPro 3
PC card driver software from Aleph1.
http://www.aleph1.co.uk/AcornProd/Software/PCPro3Demo/index.html

RiscCPS
Emulates Capcom Play Systems 1 and 2.
http://www.acornemus.freeserve.co.uk/risccps/risccps.htm

VPCE
Virtual PC Engine for playing TurboGrafx games.
http://www.plasma.demon.co.uk/pcengine/vpce.html