| augment | 4.3.1 | The world's smallest and fastest classical JavaScript inheritance pattern. |
| cldrjs | 0.5.5 | Simple CLDR traverser |
| es-class | 2.0.0 | A future proof, backward compatible, JavaScript class utility. |
| fiber | 1.0.5 | Lightweight JavaScript inheritance library |
| inheritance-js | 0.4.12 | Simple, lightweight extensions and helpers that make inheritance in JS a breeze, all with pure JavaScript, no extra libraries needed |
| oojs | 7.0.1 | Power for object oriented JavaScript libraries. |
| ring.js | 2.2.4 | Ring.js - JavaScript Class System with Multiple Inheritance |
| stampit | 4.3.1 | Create objects from reusable, composable behaviors. |