Gamedev Framework (gf) is a game framework, it provides some useful features for developping 2D games. Here is a short list of some of the main features of gf:

• Basics
  • Vector and matrix library
  • Multiple monitors handling
  • Complete window events
  • Complete input events, including gamepads
  • Easy fullscreen
  • Views (a.k.a. cameras)
• Graphics
  • Sprites and animated sprites
  • Text and fonts
  • NinePatch
  • Sprite batch
  • Texture atlas
  • Tile layers
  • Post-processing effects
  • Immediate mode GUI

If you are looking for a full game engine, you should take a look at the list of game engines on Wikipedia.

See also

The Engine FAQ on /r/gamedev wiki