An obfuscator for .NET applications to hinder decompilation
Dotfuscator - http://www.preemptive.com/products/dotfuscator/
Obfuscates to enhance source code security, shrinks to improve efficiency, and watermarks to track the origin of a pirated copy. [Commercial]
Mangler - http://www.dotnetthis.com/Samples/Mangler.htm
A simple .NET assembly obfuscator application written in managed code and running right in
browser. Includes an assembly explorer / IL disassembler.
Codework Dotfuscator - http://www.codework.com/dotfus/product.html
A Microsoft .NET and dotnet obfuscator that prevents decompilation and reverse engineering dotnet software.
Salamander - http://www.remotesoft.com/
A decompiler for .NET applications and an obfuscator to hinder decompilation
Aspose.Obfuscator - http://www.aspose.com/Products/Aspose.Obfuscator/
A .Net assembly obfuscating tool. [Shareware]
Spices.Net (ex-ILO) - http://www.9rays.net/cgi-bin/components.cgi?act=1&cid=86
Protect .Net assemblies from reverse engineering, with size reduction and speed optimizations. By 9rays.net. [Commercial]
Thinstall - http://thinstall.com/dotnet/
.NET encryptor, compressor, and pre-run framework checker. [Commercial]
Eziriz NET Reactor - http://www.eziriz.com
Protect .NET applications from reverse engineering by merging any .NET application with native machine code.
LSW IL-Obfuscator - http://www.lesser-software.com/ilobf.htm
Obfuscates .NET assemblies