thingsaurus
This is a 'thesaurus for things' or similarity engine: results show things that have something in common with what you enter. The more stars, the more things in common! You can use it for research, recommendations or simply to explore ideas and related subjects.
Here are your results for RISC OS...
Stars indicate closer matches.
Minix 
- Zephyr (operating system)
- ARX (operating system)
- Galileo (operating system)
- NCOS
- RISC iX
- AROS Research Operating System
- Phantom OS
- ReactOS
- GEOS (16-bit operating system)
- Oberon (operating system)
- PC-MOS/386
- BeRTOS
- ChibiOS/RT
- Contiki
- ECos
- FreeRTOS
- Genode
- Halium
- NuttX
- Plan 9 from Bell Labs
- RIOT (operating system)
- Ubuntu
- Android (operating system)
- BharOS
- CalyxOS
- GrapheneOS
- LuneOS
- Apache Mynewt
- Fuchsia (operating system)
- IncludeOS
- Acorn MOS
- Panos (operating system)
- A/UX
- Atari TOS
- BTRON
- DECwindows
- GEOS (8-bit operating system)
- Apple GS/OS
- NeXTSTEP
- Pilot (operating system)
- A9home
- Acorn A7000
- Acorn Arcade
- Acorn Archimedes
- Advanced Disc Filing System
- Arm Image Format
- Castle Technology
- Drobe
- The Electronic Font Foundry
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