Sharetribe - Build your online marketplace business. You don't need a developer.
Filter Off - Video speed dating. Get to know the person, not the profile.
Cocorico - Cocorico is a state-of-the art Open Source solution to create an Airbnb or Blablacar for anything.
NearGroup - Discover people via chatting, not swiping (Speed+Blind Date)
MarketplaceKit - MarketplaceKit is a platform for building different types of online marketplaces.
Flash Dating - Match w/ nearby singles by using real, up to date selfies!