Hinge - Find people you want to date through your friends on Facebook.
Flash Dating - Match w/ nearby singles by using real, up to date selfies!
Tinder - Tinder is how people meet. It's like real life, but better.
Smell Dating - The first mail odor dating service
Meetwo - Meetwo is the YES or NO questions game where you can meet new people.
vldPersonals - Full-featured PHP solution for running an online dating site.