Evolve is a social gaming platform.

Game Jolt (GJ) is a hosting service for freeware and commercial video games.

dpadd is a social network and journal for gamers.

Playfire is a disbanded social gaming networking website targeted towards core video game players.

Mod Database, or Mod DB, is a website that focuses on general video game modding.

MobyGames is a website which catalogs video games both past and present.

Heroic Labs is an open-source realtime server for apps and games.