Packages beginning with letter "O".
- obs-studio - Open Broadcaster Software Studio
- ogmrip - DVD ripping and encoding graphical user interface
- opencore-amr - OpenCORE Adaptive Multi Rate Narrowband and Wideband speech lib
- openmw - Unofficial open source engine re-implementation of the game Morrowind
- openshot - Create and edit videos and movies
- osmose - A Sega Master System / Game Gear emulator