| Operating system | Developer | First release |
|---|---|---|
| AmayaOS | — | 2014 |
| AnduinOS | — | — |
| Armbian Linux | — | — |
| AxOS | — | — |
| Bliss OS | — | — |
| ChibiOS/RT | — | — |
| Collapse OS | — | — |
| Dirty Unicorns | — | 2012 |
| Dusk OS | — | — |
| FreeDOS-32 | — | — |
| FreeNOS | — | — |
| FreeVMS | — | — |
| Ghost | — | — |
| Minoca OS | — | — |
| MIUI | Xiaomi | — |
| Nura | — | — |
| OpenMediaVault | Volker Theile | 2009 |
| Orthanc | — | — |
| Pi-KVM | — | — |
| PrimTux | — | — |
| Salix OS | — | — |
| Tor-ramdisk | — | — |
| Trisquel | — | 2007 |
| TrueNAS | IXsystems | — |
| UbuntuDDE Remix | — | — |
| Vanilla OS | — | — |
| What's Your Sign? | Objective-See | — |