Themida 

Powerful Windows Software Protector. Designed for software developers who wish to protect their applications against advanced reverse engineering and software cracking.
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Code-Lock 

Code-Lock is an advanced secure software protection system that will create the registered version of your program when the registration code is correct. To date, software protected by Code-Lock have not been cracked by crackers!
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ACProtect standard 

ACProtect is an application that allows you to protect Windows executable files(PE files) against piracy. Using public keys encryption algorithms (RSA) to create and verify the registration keys and unlock some RSA key locked code.
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