X is a collection of loosely-bound, cross-browser, Javascript functions and objects. It is intended to be a resource from which you pick and choose - you do not have to include the entire library in your application.
This library is a simple way to implement tabs on your page using CSS, a little JS, and semantic markup which degrades gracefully on browsers with CSS unavailable or disabled.
qooxdoo is a universal JavaScript framework with a coherent set of individual components and a powerful toolchain. It is open source under liberal licenses and supported by the qooxdoo community around the world.
