- Oolong the Llama
- OontZ
- Oooh: Official Group Chats
- OOOH.Events Manager
- OOOO by Lemon Jam
- OOR Magazine NL
- Ooredoo Music (Myanmar)
- Ooredoo Nation
- Ooredoo TV
- Ooze : A new way to news
- OP ePaper
- Op Platt
- Opalia Numerologiekarten
- Open - cultura in vetrina
- Open 99 Doors
- Open Air Kino auf der Burg
- Open Ateliers
- OPEN BEYOND
- Open Blue
- Open Campania
- Open Campus Dagen
- Open Case Simulator
- OPEN CITY APP
- Open Door - Escape Games
- Open Ear Manager
- Open FM
- Open Giant Surprise Puppycage!
- Open Gifts Simulator
- Open HLX
- Open House Hidden Object Games
- Open It!30 Doors
- Open Lap
- Open messenger
- Open Mic Finder
- Open Puzzle Box
- Open Source
- Open The Classic Door
- Open The Classic Door Season 3
- Open To Go for iPad
- Open World Delivery Simulator