Welcome to The RISC OS Ltd website. The official developers of RISC OS since 1999. Please browse the various mini websites we have relating to RISC OS, using the links above. For easy reference these are :- http://www.riscos.com  - the main RISC OS Info pages, http://acorn.riscos.com - the archive of the historic Acorn web site, http://select.riscos.com/RISCOS6 - the RISC OS Six web site, http://sales.riscos.com - the online RISC OS sales website. Latest News RISC OS Select 6i1 is now available for download by Select subscribers. RISCOS Ltd starts its 14th year of business on 1st February 2012. Contact us on Skype riscos-cardiff RISC OS Six RISC OS SIx is the latest version of RISC OS produced by RISCOS Ltd. Read all about it on the RISC OS Six  website. RISC OS 4 ROMS RISC OS 4 ROMs areavailable via the RISC OS Sales web site RISC OS Programmer’s Reference Manual - The Window Manager. Now available from the Sales website.