| Language | Paradigms | First appeared | Developer |
|---|---|---|---|
| Gforth | — | 1992 | GNU Project |
| GNU Awk | — | 1986 | GNU Project |
| GNU epsilon | — | 2002 | Luca Saiu |
| GNU Octave | array programming | 1988 | John W. Eaton |
| GnuCOBOL | — | 2002 | GNU Project |
| Guix Workflow Language | — | 2017 | — |
| Mondrian | — | 1997 | — |