Welcome

Who are RISC OS Open Limited?

RISC OS Open Limited (ROOL) manages the source code to RISC OS. We are an organisation run on a largely voluntary basis. We also offer specialist professional services to anyone who is interested in developing products around the Arm architecture or RISC OS. You can find out more information about us here.

What is RISC OS?

RISC OS is a computer operating system designed in Cambridge, England by Acorn. First released in 1987, its origins can be traced back to the original team that developed the Arm microprocessor. RISC OS is owned by RISC OS Developments Ltd. You can find out more at sites such as riscos.info, The Icon Bar and RISCOSitory.

If you are new to RISC OS, you might want to look at the introductory pages in our wiki here.

Latest news

• Development easier than A-B-C (30-Oct-2020)
• RISC OS 5.28 now available (24-Oct-2020)
• Charting our way (24-May-2020)
• COVID-19 update (16-Mar-2020)

Recent changes in GitLab

• Pushed to branch master in AcornSSL (ROOL) – Adjust capitalisation for UpCall (28-Nov-2020)
• Pushed to branch master in PartMan (ROOL) – Adjust capitalisation for UpCall (28-Nov-2020)
• Pushed to branch master in OmniAccess (ROOL) – Adjust capitalisation for UpCall (28-Nov-2020)
• Pushed to branch master in EtherUSB (Julie Stamp) – Adjust capitalisation for UpCall (28-Nov-2020)