Enterprises, software vendors and equipment manufacturers have all come to recognize a simple truth: Reverse engineering managed code is a common practice and, with the right tools, it is extremely easy to do. Dotfuscator provides enterprise-grade protection, greatly reducing the risk of piracy, intellectual property theft and tampering. Through a combination of technology, processes and effective controls, we offer material risk mitigation lowering the likelihood of damage and transferring risk entirely out of your organization. Learn more.

Dotfuscator:

Works with all your .NET applications (mobile, server, desktop)
Is trusted by Microsoft and is included as a part of Visual Studio
Offers the strongest protection without breaking (.NET) standards
Is continually being improved to keep ahead of decompilers
Supports highly-complex development and build environments
Includes dedicated, live support
Quick and easy to use!

Home:

http://www.preemptive.com/products/dotfuscator/overview

Only for V.I.P