Acorn

The Acorn Preservation Project
Preservation of Acorn software, books, magazines and manuals, with the emphasis on faithful and accurate digital copies of the original cassettes, disks, packaging and documentation.
http://www.acornpreservation.org/

BBC Connect
A freeware Windows front-end for the BBC emulators BeebEm, B-Em, PcBBC and the Electron emulator ElectrEm.
http://ninsei.emuunlim.com/bbc_connect_info.html

6502Em
A commercial BBC/Master/Compact/Electron emulator for RISC OS 3.1 or above.
http://www.borcherds.co.uk/murklesoft/riscos/6502em.html

Retro Software
Software label encouraging and supporting the development of brand new games for "retro" computing platforms, particularly the BBC Micro/Electron.
http://www.retrosoftware.co.uk