| Drobe Launch Pad: The launch pad to the net for RISC OS users worldwide. Portal including Acorn, ARM, technology and general news. |
| RISCOS Ltd: RISC OS developers - the world's first 32-bit RISC operating system - used in Acorn, Advantage Six, Microdigital and RiscStation computers. Site has content for developers, resellers and the public interested in using this ROM-based, low-overhead, operating system. |
| Acorn Charity Site: Fund-raising efforts. |
| Acorn User RC5/DES Group: Details of the cracking efforts. |
| acornusers.org: Hosts the Acorn News Service, newsgroup archives, RC5/DES effort, Charity Site and an FTP server for freeware software distribution. |
| Advantage6: Design, manufacture and retail RISC OS electronic devices in the embedded and educational sectors. |
| ANS Filebase: Comprehensive categorised database, with version information. |
| ArcSite: German portal. Offers news, articles, forum, links and web space. |
| Castle Technology: Owner of the RISC OS copyright, they also manufacture, distribute and develop of Acorn Computers, as well as the acclaimed new Iyonix PC. |
| My RISC OS: Automated web portal. Add news and reviews, and chat. |
| Nutshells: Categorized and cross-referenced database of shareware/freeware and software authors, with a broader database of companies and information. |
| RISC OS 3 Knowledge Base: Official site providing support for earlier versions of the operating system. |
| RISC OS webring: Provides free banner advertising of related websites. |
| RISCOS.org: Portal offering news and articles. It includes a comprehensive software database. |
| Select Scheme: Yearly subscription to updated versions of RISC OS. |
| VirtualAcorn: The fully-functional RISC OS emulator for Windows-powered computers. |
Classical
