# RISC OS Open Project Marks 20th Anniversary

The RISC OS Open project is celebrating two decades of developing and maintaining the RISC OS operating system as open-source software. Originally created for ARM-based computers, the project keeps this niche but historically significant OS alive for modern hobbyists and retro-computing enthusiasts. Its longevity highlights the continued dedication of a small community to preserving a unique computing platform.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://www.riscosopen.org/news/articles/2026/06/20/twenty-years-of-risc-os-open) — Sun, 02 Aug 2026 12:36:07 +0000