Castle Technology - Owners of RISC OS and used to make the Iyonix computer.
RISC OS Open - Responsible for managing the source code of RISC OS 5.
RISCOS ltd - Develop RISC OS 6 (previously RISC OS 4) for third party hardware such as Advantage 6's A9home computer and the
Virtual Acorn RiscPC emulator for Windows. as well as for legacy machines.
Advantage Six ltd - Develop ARM powered hardware running RISC OS, as well as the A9home.
A9home - Advantage Six's A9home computer running RISC OS 4.42.
Iyonix - Support for Castle's discontinued Iyonix computer.
CJE Micros - RISC OS hardware and software vendor, as well as being the exclusive UK vendor for Advantage 6's A9home computer.
They also develop PhotoDesk, as well as a library of other software.
APDL - RISC OS hardware and software vendor, also develop the Schema 2 spreadsheet application and DrawWorks, as well as a
library of other software.
R-Comp - RISC OS software vendor, also develop Messenger Pro and Grapevine as well as a library of other software.
MW Software - Develop the ArtWorks vector draw package as well as the EasiWriter and TechWriter series of word processors originally
developed by Icon Technology. Also develop other useful software such as the GutenPrint photo-real printing application.
David Pilling - Develops Ovation Pro DTP package for RISC OS and Windows.
Sine Nomine Software - Software developer selling the Impact database application amongst other software.
7th Software - Various useful RISC OS software, including MoreDesk.
Abacus Training - Develop the Fireworkz spreadsheet and word processing suite.
RiScript - A professional PDF generation package, similar to Acrobat.
RISC OS community projects
Netsurf web browser- A highly capable, free modern RISC OS web browser, supporting CSS. Also available for GNU/Linux.
RISC OS Connect - A RISC OS charity set up to encourage links and communication within the risc os community.
RISC OS.info - A RISC OS Wiki site maintained by Peter Naulls. Also hosts the RISC OS Firefox port.
News sites
RISC OS.org - RISC OS news site with help on various RISC OS related issues, as well as a large index of free and commercial software.
Trail Riders Fellowship - A national organisation that represents trail riders and promotes the use of motorcycles on unsurfaced
rights of way, i.e. byways and other 'green lanes'.
