Tangle is a JavaScript library for creating reactive documents. Your readers can interactively explore possibilities, play with parameters, and see the document update immediately. It is a lightweight library that provides a simple API for tangling up the values in your document. Tangle.js has no dependencies, and works with any JavaScript framework, or none at all.

TangleKit is an optional collection of UI components that let your readers adjust values and visualize the results. You can grab whichever components you want, use them, extend them, modify them, or just learn from them and make your own. TangleKit also includes (and depends on) a few helpful libraries, such as MooTools, sprintf, and BVTouchable.

Requirements: Javascript enabled
Demo: http://worrydream.com/Tangle/
License: MIT License