RISC OS is a general-purpose desktop operating system for ARM platforms that is both accessible and useful in 2025, mostly due to a Raspberry Pi port.
To remain relevant and continue supporting the next generation of ARM architectures, RISC OS Open has launched a Moonshots Initiative to move the OS away from incremental development towards more ambitious steps.
As part of the initiative, support for 64-bit platforms is seen as a priority, and the company is seeking developers, funding partners, and community advocates to help achieve this goal.
Currently, RISC OS supports memory protection, although there is a mode where modules can run in supervisor mode without memory protection.
This kind of support is crucial for more complex software, self-hosting debugging tools and more.
