Suggest an alternative to

RTM-Z80

Retro Tiny Multitasking system for Z80 based computers

Why do you think that https://github.com/heliosproj/HeliOS is a good alternative to RTM-Z80

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with RTM-Z80. Optional.

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