ACLib is a library, that helps you to protect your programs from being cracked. Contains many detection algorithms to detect if your software is being debugged, monitored or traced. Also allows you to encrypt parts of your software to avoid cracking.
SysTuner is a tool which helps you to optimize and customize Windows. By using this program, you will have hundreds of hidden Windows settings only several clicks away. You will be able to customize almost any aspect of Windows as an expert.