- Osmo Costume Party
- Osmo Counting Town
- Osmo Detective Agency
- Osmo Kaleidoscope
- Osmo Lettertopia
- Osmo Masterpiece
- Osmo Math Buzz
- Osmo Math Wizard
- Osmo Monster
- Osmo Newton
- Osmo Numbers
- Osmo Numbers Cooking Chaos
- Osmo Numbers Classic
- Osmo Numbers Toybox
- Osmo Parent
- Osmo Pizza Co.
- Osmo Projector
- Osmo Shape Builder
- Osmo Squiggle Magic
- Osmo Stories
- Osmo Tangram
- Osmo Tangram Classic
- Osmo Words
- Osmo Words Chomp
- Osmo Words Classic
- Osmo Words Explorers
- Osmo World
- Osmosis
- Osmosis: Medical School Notes
- Osmosmerka: Solve Word Search Puzzles Using Serbian Latin and Cyrillic Alphabets
- OSnap! Pro • Lapse & Motion
- Osolo
- Osoyoo Arduino Robot Car
- Osoyoo Imitation Driving Car
- Osoyoo Raspberry Pi Robot Car
- Osoyoo Wifi Robot Car APP
- Osoyoo Wifi Robot Car UDP App
- OSP | Online Scoring Platform
- OSR Star Finder
- Osratouna TV Learn Arabic
- OSRB Parent
- OSSA App
- Osseo-Fairchild SD
- OST Campus
- Ostaz: Request a Tutor
- Ostazii Teacher
- Osteopathic Medicine Exam Prep
- Osterburg 2.0
- Ostia Antica - Harbour of Rome
- Ostinato z krainy Sonostworów
- Ostomy 101
- Ostrov.museum
- Ostomy 101
- Ostrov.museum
- OSU Mobile
- OSU Research
- OSVE
- OswaldConnect
- Oswego USD 504, KS
- OS診断ーシンプル簡単なパソコン選びのサポートアプリ
- OT App Lite
- OT Kinesiology Pro Consult
- OTA Practice Test Prep
- Otago Polytechnic Electrical
- Otago Tepukenga Carpentry App
- OTE Museum AR+
- OTESgr8kids
- OTH Amberg-Weiden
- OTH App
- Othena
- Other Order
- Other Side Camera
- Other Side of the Earth
- Oticon Medical 3D
- Otitis Media Disorders
- Otizmli Bireyler İş Gücünde
- OTLR - Outside the Locker Room