JustDecompile is a free .NET Decompiler from Telerik.
Beta version is available from http://www.telerik.com/products/decompiling.aspx
Previously I used to use .NET Reflector; one of the most essential tool for developing .NET application; especially for to make sure the difference between source code of a project and production version dll file[.NET assembly by comparing decompiled code.
.NET Reflector is no more Free.
Source code could see using JustDecompile but not main feature exporting code in the for of project from dll is not there. it’s missing which is the most useful and needful feature.