Also WEP-M+2 (
Here) Runs on Linux and Mac but counts as the Mac OS is a derivative of Linux/Unix.
And to stretch that definition even further T4T (
Here) is Linux only. The VirtualBox Guest VM that does the actual work for the project is Linux though VirtualBox's Host client runs on many platforms.
Then there is OProject's sub-project Shor's Algorithm (
Here) is Linux only.