Skip to main content

RISC OS

RISC OS specifications

RISC OS is an operating system designed to run on ARM computers. Originally designed in 1987 by Acorn Computers of England, it was made for use in its new line of ARM-based Archimedes personal computers and was then shipped with other computers produced by the company. Despite the demise of Acorn, RISC OS continues to be developed today by the RISC OS Open community on version 5.0 of the system that was open sourced in 2018.

Developer RISC OS Open Ltd / Acorn Computers
Kernel / engine RISC OS real-time modular kernel
Supported platforms ARM (32-bit)
First released 1987-01-01

Latest RISC OS user agents:

User Agent Browser Device
Mozilla/5.0 (RISC OS) NetSurf/3.12 NetSurf 3 Unknown
Mozilla/5.0 (compatible; Firefox/96.0; RISC OS 5.30) Firefox 96 Unknown
Mozilla/3.04 (compatible; NCBrowser/2.35; ANTFresco/2.17; RISC OS-NC 5.13 Laz1UK1309) ANT Fresco 2 Unknown
Mozilla/3.04 (compatible; ANTFresco/2.13; RISC OS 4.02) ANT Fresco 2 Unknown
Mozilla/1.10 [en] (Compatible; RISC OS 3.70; Oregano 1.10) Oregano 1 Unknown