| name | image | follows | core | development status | license | source model | date released | Language | Latest version | Website | family |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat Enterprise Linux |  | Red Hat Linux | Monolithic | Development | GNU General Public License | Open | 22/02/2000 | English language | 5.11 | Website | Unix based |
| Kali Linux |  | BackTrack | Mixed | Development | Various licenses | Open | 13/03/2013 | English language | 1.06 | Website | Unix based |
| Korora (operating system) |  | Gentoo Linux | Monolithic | Development | Various licenses | Open | 07/12/2016 | English language | 25 | Website | Unix based |
| Darwin (operating system) |  | NeXTSTEP | Development | Apple Source License | Open | 15/11/2000 | English language | 17.3.0 | Website | Unix based | |
| Version 7 Unix | Version 6 Unix | Active | 28/10/2013 | English language | Website | Unix based |