NitrOS-9 The best operating system for the Tandy/Radio Shack Color Computer ever.. and it's free!


NitrOS-9 current version is 3.02.08 (May 2008)

Get NitrOS-9 Level 1 (For the Color Computer 1, 2 and Dragon 64)
Get NitrOS-9 Level 2 (For the Color Computer 3)
Get NitrOS-9 Level 2 (For the 6309 equipped Color Computer 3)

Or look for older releases in



Source Code

You can get NitrOS-9's source code from SourceForge's CVS Repository

Nightly Build

This are builds compiled daily against the latest source code. If you want to help the NitrOS-9 project, you can use this and report any bugs that you find.
Get today's build.