- That Social App
- Thawany TAG
- The Highly Connected App
- THC Hurley
- The100.io Destiny 2 Groups
- Theatre Royal Plymouth
- TheBHNGroup
- TheCao24h
- TheFans: Social Football App
- TheFRAN--Franciscan Children's
- TheFutbolApp
- TheLoop for iPhone
- Theme-Park App
- TheNailTech.org
- TheNux
- THEO - Dating app
- Theology Online - Politics, religion, & more.
- Thinkster: Find Local Friends
- Third Eye Yoga
- Third Wheel App
- Thirsty Biker
- This is Soho Community
- This or That - Conundrums
- This or That - Would you Rather This or That Dirty
- ThisCrush anonymous questions
- THISIS
- Thiện Nguyện
- Thomasgemeinde Grünwald
- Thopla
- ThoughtFarmer
- Thoughtful—time well spent
- THP+
- Thread
- Thread - Tapestry