Class Systems6
| joose | Post-modern object system for JavaScript |
| boo | Prototypical utilities for Object Orientation / Composition |
| structr | Structure for Javascript |
| css-smasher | Minify and compress your CSS, using JavaScript |
| id8 | id8 is a small library designed to help you write object-oriented code that is easy to maintain and scale. id8 contains a Class constructor, as well as full-featured Observer, Callback and Hash classes. |
| mootools.js | MooTools latest server library as npm package for node.js |