Jupiter ACE Emulator for UN*X http://hem.passagen.se/tiletech/ace.htm

ACE 32 The Jupiter ACE Emulator for MSDOS http://members.aol.com/autismuk/ace/

Edsac Simulator A freeware emulator for Windows and 68K Macintosh. http://www.dcs.warwick.ac.uk/~edsac/