| Operating system | Developer | First release |
|---|---|---|
| Alpine Linux | — | — |
| Embox | — | — |
| FreeBSD | — | 1993 |
| GhostBSD | — | 2009 |
| Mcube Kernel | — | — |
| NomadBSD | — | 2018 |
| OPNsense | — | — |
| OpuntiaOS | — | — |
| SerenityOS | Andreas Kling | — |
| Soso | — | — |
| Operating system | Developer | First release |
|---|---|---|
| Alpine Linux | — | — |
| Embox | — | — |
| FreeBSD | — | 1993 |
| GhostBSD | — | 2009 |
| Mcube Kernel | — | — |
| NomadBSD | — | 2018 |
| OPNsense | — | — |
| OpuntiaOS | — | — |
| SerenityOS | Andreas Kling | — |
| Soso | — | — |