Castle Technology Ltd

Castle Technology were the makers of the IYONIX pc, and also produced the Risc PC and A7000+ after Acorn, until the production run ended.

Castle's home pages are http://www.castle-technology.co.uk/

They are were the owners of RISC OS, having purchased it from Pace in 2003, the current owners being RISC OS Developments, with the operating system being managed by the RISC OS Open initiative: http://www.riscosopen.org/

Note: The history of the development of RISC OS after version 3.7 is contentious. RISCOS Ltd also obtained rights to develop RISC OS for the desktop market in 1999. See these notes on the release history of RISC OS for further details.