Finally an achievements system that works with nearly any game on nearly any platform! As long as your creation tool/programming language supports HTTP operations and MD5 (or SHA-1), you can implement the achievements API in your game.
Developers work hard enough on their games as it is, so adding achievements to those games should be made as simple as possible.
Along with the Game Jolt developer community, we're working hard on making libraries and plugins to work with as many tools/languages as possible. If you'd like to help with this endeavor, contact us!