EXT.NET is an ASP.NET component framework built with Sencha Ext JS. Focus on your softwares business logic and take advantage of 100+ components and 600+ examples in the Examples Explorer! Ext.NET boosts your productivity! We offer 100+ components and 600+ examples. Browse the examples using the sidebar menu on the left, check their source code, open in a separate window if you like. Ext.NET is an advanced ASP.NET (WebForms + MVC) component framework integrating the cross-browser Sencha Ext JS j@vascript Library.