MeetMe - Location-based social networking app for meeting singles.
OkCupid - OkCupid Free Online Dating - The fastest growing free dating site for singles.
Smitten.fun - Smitten - Meet, Love, Fun and Enjoy
Flingster - Flingster lets you find local flings for random dates with people from your area.
Grindr - Grindr is the largest social networking app around for gay, bi, trans, and queer people.
Tinder - Tinder is how people meet. It's like real life, but better.