Undum : A client side framework for hypertext interactive fiction games
Baseline : Built with typographic standards in mind, Baseline makes it easy to develop a website with a pleasing grid and good typography. Baseline starts with s...
Flask : Flask is a microframework for Python based on Werkzeug, Jinja 2 and good intentions. And before you ask: It's BSD licensed!
Cappuccino : Cappuccino is a framework which makes it easy to create advanced web apps. With just a few lines of code you can have an app built with full undo and ...
LÖVE is a framework for making 2D games in the Lua programming language. LÖVE is totally free, and can be used in anything from friendly open-source hobby projects, to evil, closed-source commercial ones.