SyntaxDB - Easily look up programming syntax for multiple languages
Tinkersynth - Create and purchase unique generative art
Learn X in Y minutes - LearnXinYminutes isn’t a good way to learn your first programming language, but it’s a great way to...
Sampulator - Make (and record) beats on your keyboard
GitHub Visualizer - Enter user/repo and see the project visually
Splice Beat Maker - Make and share beats in your browser