Coolite is a suite of professional ASP.NET AJAX Web Controls which includes the Sencha ExtJS JavaScript Framework.
The suite of web controls are built with a focus on bringing Visual Studio Design-Time support to the Ext JavaScript Framework. A combination of server-side and client-side frameworks.
The suite of controls include the following: Integration of the Ext JavaScript Framework. Design-Time support in Microsoft Visual Studio and Visual Web Developer. Dual Licensed (Open Source AGPL3 License and Professional License).
In November, 2010 Coolite was renamed to Ext.NET.