- Casual Dating, #1 Hookup App
- Casualx: Hookup Dating App
- Caswell Metal Finishing Forums
- CAT chat
- Cat Memes
- Cat Memes Stickers
- Cat Sweetie
- Cat VS Dog -Online
- Catalyst Community
- Catapush Messenger
- Catch up invites and responds
- Catch-Me
- Catch-Up D&M Shout
- Catcher Games - Catch or Lose
- CatchUp - Keep in Touch
- CatchUp Widget
- Catchups
- Catchy
- Catedral Metodista do Rio
- Catedral Rio
- Caterham Motorsport
- Catfan
- CatholicChemistry Dating App
- CatholicBrain Connect
- CatholicMatch Dating App
- Catholify
- Cativa Hub
- Cato Institute Events 2021
- Catoo: Career Mentor
- Catphish
- Catster
- Caught My Eye
- Caught Offside
- Caught Offside for iPad
- Cauze: Charitable Giving
- Caviar Millionaire Lifestyles
- CAXSA
- Caçadores de Bares
- CB
- CB AGÜIMES
- CB Andratx
- CB Arroyomolinos
- CB BABIECA
- CB Ciudad Real
- CB Culleredo
- CB El Palo
- CB Getafe
- CB La Palma 95