This is the Military Open Source Software (Mil-OSS) Website, for discussion about the military and open source software (OSS).

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Welcome to Mil-OSS!

Welcome to the Mil-OSS website This site is for discussing the relationship of open source software (OSS) and the military. We focus on the U.S. military, the US Department of Defense (DoD).

Please join the Mil-OSS mailing list!

Also see the GitHub Mil-OSS projects site, where various projects are available.

Key materials

What happened to

At one time we (the original Mil-OSS group) were hosted on, but that domain was accidentally allowed to lapse and picked up by someone else. As of May 2023 we’ve regained control over We are very sorry for the inconvenience. At the moment we primarily refer to

Modifying the site

If something needs to be added to this site, please help us! See the Instructions on modifying this site on how to create proposed modifications. Basically, create GitHub pull requests.

Unless otherwise noted the contents of this website are released under the Creative Commons Attribution 4.0 International (CC-BY-4.0) license.