- Objective-Clean
- ObjectiveCLIPS 1.7
- ObjectiveSheep Pins 1.8.0
- ObjectMaker for X-Plane 6.60
- ObjectPlant 4.1.4
- Objectscript 2.10.4
- ObjectTools 4.0r1
- ObjectusVideo 1.3.3
- ObjectusVideo 1.3.5
- ObjectZoom 1.0.0.6
- Objektiv 0.5.1
- Oblique Strategies 1.2
- Obliteration 1.7
- Oblurasky Widget 1.0
- OBS Studio 23.0.1
- OBS Studio 23.2.1
- OBS Studio for Mac 22.0.1
- ObscureMovement 1.0.1
- Obscurity 1.4
- Obscurity 1.5
- Obsession 1.1
- Obsidianus Vol:1 System Icons 2.0
- Ocean 1.1
- Ocean Express 1.0
- Ocean Waves 2.0.1