diff --git a/Operating-system-development.md b/Operating-system-development.md
index ac645b1..b157c94 100644
--- a/Operating-system-development.md
+++ b/Operating-system-development.md
@@ -11,6 +11,7 @@ Here is a short list of some OS projects in Rust. Feel free to add your own:
 * [thestinger/rust-core](https://github.com/thestinger/rust-core/), a freestanding standard library clone that can even be configured to avoid libc.
 * [LeoTestard/Quasar](https://github.com/LeoTestard/Quasar.git)
 * [pcmattman/rustic](https://github.com/pcmattman/rustic.git)
+* [cmr/cmoss](https://github.com/cmr/cmoss), a rather inactive OS project
 
 ### Resources and docs