Castle Technology (RISC OS Open Ltd)

Castle Technology Ltd. (also referred to as CTL) is a British limited company engaged in computer software and IT consulting. It produced and sold ARM computers, and sold the Acorn-branded range of desktop computers that run RISC OS. Prior to Acorn's demise, it was the largest of their dealerships. It is based in Cambridge, England.Following the breakup of Acorn in 1998, Castle Technology bought the rights to continue production of the Risc PC and A7000+ computers under the Acorn brand name.On 4 July 2003, Castle bought the rights to RISC OS from Pace Micro Technology and released the first Intel XScale-based desktop computer, the Iyonix PC, which runs a full 32-bit RISC OS 5. Castle and RISCOS Ltd subsequently agreed to merge RISC OS 4 and RISC OS 5 together. In 2004, Castle announced priorities for development of the OS under a project named Merlin.Production of the Iyonix PC ceased on 30 September 2008.Now, RISC OS Open Limited (ROOL) manages the source code to RISC OS. It is an organisation run on a largely voluntary basis. It also offers professional services to anyone who is interested in developing commercial products using RISC OS.