Supports .NET Framework 4.0 and Visual Studio 2010

Take a look at Babel Obfuscator features:

1	Merge Assemblies: Babel can merge dependencies assemblies into your application assembly providing an effective solution to single-assembly deployment.	5	Satellite Assemblies: Babel handles and automatically obfuscates satellite DLLs that are part of an obfuscated executable.
2	MSIL Encryption: Babel can encrypt method byte code and embed the encrypted data into managed resources.	6	XAP Packages: Babel obfuscates the assemblies contained in a XAP package directly without working with individual assemblies outside the XAP package.
3	Public Symbols Obfuscation: Babel can obfuscate public members in multiple assemblies, aligning the names of obfuscated symbols referenced in each assembly.	7	Embed Assemblies: Babel can embed multiple assemblies into the main application reducing the overall size of the deployed assembly.
4	Resource Encryption: Babel can compress and encrypt embedded resources.	8	PFX Re-sign: Babel supports assembly re-sign with Portable Information Exchange files.

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Babel is available in three editions: Free, Professional and Enterprise. Here's a quick look at what comes in each of the editions

Renaming Control Flow Obfuscation Basic String Encryption Strong Name Signature MSBuild Support XML Obfuscation Rules	Embed Assemblies Enhanced String Encryption Dead Code Removal PFX Signature Silverlight XAP Package Overloaded Renaming Anti Reflection Protection Multi Threading Execution	Merge Assemblies MSIL Code Encryption Resource Encryption Public Symbols Obfuscation Satellite Assemblies