Eazfuscator.Net is paid software since version 3.4 (6+ alternatives below).
Download Eazfuscator.Net 220.127.116.11493 (last free version).
How to make Eazfuscator.Net 3.3 work with Visual Studio 2012
If Eazfuscator doesn't find the ildasm.exe in Visual Studio installation,
go to C:\Program Files\Microsoft SDKs\Windows, look for ildasm.exe
and copy it to C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\
You'll need to create the missing folders if any.
Eazfuscator 3.3 (last free version) doesn't support .NET 4.5 and WinRT.
Eazfuscator.Net has some free alternatives (list updated on 25.08.2018)
To obfuscate your .Net apps, you can also use the following products:
> ConfuserEx (open source),
> Obfuscar (open source),
> DotNet Patcher (open source),
> AppFuscator (online, free mode),
> DotRefiner (free),
> Agile.net (free edition),
> Orange Heap (free),
> NCloak (open source),
> Phoenix Protector (free),
> SharpObfuscator (free),
> .NET Obfusasm (free mode),
> Codefort (free edition),
> Skater .Net (free edition).