| Language | Paradigms | First appeared | Developer |
|---|---|---|---|
| Asymptote | imperative programming | 2004 | — |
| GNU Guile | — | 1993 | GNU Project |
| GNU Prolog | constraint logic programming | 1996 | GNU Project |
| GnuCOBOL | — | 2002 | GNU Project |
| ReScript | functional programming | 2015 | Bloomberg L.P. |
| SCM | — | 1990 | Aubrey Jaffer |