Category O
All languages starting with the letter O are shown, sorted by Language.
| Language | Author | Date | Comments | Rate |
|---|---|---|---|---|
| O'Basic | Philipp Winterberg | 04/20/05 | 1 |  |
| OADL | Ross Cunniff | 04/24/08 | 0 | |
| Oberon | Andrejs Jansons | 04/20/05 | 0 | |
| Obey | mrhill/icebird | 12/08/05 | 2 | |
| Obfuna | Marinus Oosters | 07/30/10 | 0 | |
| Obix | Christian Neumanns | 06/05/09 | 0 | |
| OBJ | Grigore Rosu | 04/20/05 | 0 | |
| Objecteering language | JPE | 11/04/06 | 1 | |
| Objective C | Joshua Pennington | 04/11/09 | 1 | |
| Objective-C | Dan Christiansen | 04/20/05 | 7 | |
| ObjectPAL | James R. (Jake) Mireles | 08/18/06 | 0 | |
| ObjectScript | Christian Meurin | 04/20/06 | 0 | |
| Objectstar | Anonymous | 04/20/05 | 7 | |
| Obliq | David Eddyshaw | 04/20/05 | 0 | |
| OCaml | David Baelde | 11/08/05 | 0 | |
| Occam | Tony Curtis | 04/20/05 | 0 | |
| OCL | Anonymous | 04/20/05 | 0 | |
| OISC | Quiveror | 02/10/07 | 0 | |
| OmgRofl | StickouJR | 05/12/11 | 0 | |
| OmniMark | Jacques Legare | 01/31/06 | 0 | |
| Omnis Studio | Minh Hoac | 04/20/05 | 0 | |
| Ook! | Phil Homewood | 04/20/05 | 8 | |
| OOSL | Henrique Leme | 10/07/11 | 0 | |
| OPAL | Maximilian Laiacker | 04/20/05 | 0 | |
| Open Access IV | Alfred Unkrig | 04/20/05 | 1 | |
| OpenEdge | AxelF | 09/11/09 | 0 | |
| Openedge (Progress 4GL) | Elwin van der Meer | 01/14/08 | 1 | |
| OpenScript | k-zed | 08/24/05 | 3 | |
| OpenVMS DECTPU | Anonymous | 04/20/05 | 0 | |
| Operation Flashpoint Scripting | Unknown | 04/20/05 | 1 | |
| OPL | Dave Wilson | 04/20/05 | 0 | |
| OPS Script | Anonymous | 04/20/05 | 3 | |
| OPS5 | Scott Hamilton | 10/28/09 | 0 | |
| Oracle 9i SQL | Albert Indeev | 04/20/05 | 2 | |
| Oracle SQL | Anonymous | 04/20/05 | 0 | |
| ORK | Rune Berge | 05/17/05 | 5 | |
| Oroogu | Anonymous | 04/20/05 | 1 | |
| Orthogonal | Brian Raiter | 04/20/05 | 0 | |
| OScript | Anonymous | 04/20/05 | 0 | |
| OWL | Marinus Oosters | 12/11/05 | 3 | |
| Ox | Riccardo 'Jack' Lucchetti | 04/20/05 | 1 | |