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


NitrOS-9 is a real-time, process-based, multitasking, multi-user, Unix-like operating system for the TRS-80 Color Computer, Radio Shack Color Computer 2, Tandy Color Computer 3 and Dragon 64.

The original OS-9 was created in 1979. NitrOS-9 is the modern equivalent of that OS, and includes advanced features like support for up to 2 MB RAM and 4 GB Hard drive partitions.

It is still being developed, and support is available in many mailing lists and forums.

NitrOS-9 News

March 15, 2009

"Nightly" versions of NitrOS-9 are now available. You can help the project by using the lattest buil and reporting any bugs you find.
Get it from the download page.

May 30, 2008

NitrOS-9 Version 3.02.08 is available.
Read the release notes.

May 27, 2008

There is a new NitrOS-9 Wiki. Please stop by and contribute. (A sourceforge user name is required to edit it)