Webix

Cross-browser, cross-device JavaScript framework for building interactive web applications using JavaScript, CSS, HTML5 techniques. Webix delivers over 40 fully customizable components, provides JQuery integration and can work with any server-side platform: PHP, .NET, etc. Unlimited extensibility, controllable look-and-feel, and intuitive API allow creating powerful apps. The library is ditributed under GPLv3 and Commercial licenses.