Haiku (operating system)

^{This OS has been suggested as a good fit for older laptops ...}

Haiku, originally OpenBeOS, is a free and open-source operating system for personal computers. It is a community-driven continuation of BeOS and aims to be binary-compatible with it, but is largely a reimplementation with the exception of certain components like the Deskbar.^[7] The Haiku project began in 2001, supported by the nonprofit Haiku Inc., and the operating system remains in beta.^[8]

https://en.wikipedia.org/wiki/Haiku_(operating_system)

https://www.haiku-os.org/

https://www.haiku-os.org/about/

https://www.haiku-os.org/get-haiku/    <<==== Downloads

It looks like this is still an active project as of 2026 for x86 32-bit and 64-bit platforms:

https://github.com/haiku/haiku