JustDecompile is available for free download individually, or it can be purchased with priority support as a part of DevCraft - the most comprehensive HTML5 and .NET toolbox.

Gain access to the complete stack of products to help you build stunning apps twice as fast:

Over 420 UI controls for HTML5 and all .NET technologies
Five powerful productivity, code quality and debugging tools for faster development
Reporting and data access

Home:

http://www.telerik.com/products/decompiler.aspx