Registry Clean Master 

Windows registry is a database where all the configuration settings and options are stored. With the passing of time, and after installing and uninstalling programs and applications, this registry gets full, which makes our system work slower.

This program performs a thorough analysis of our registry and locates all its errors. You only need to click on the Scan button, and the program will start scanning immediately. It has a nice interface and works pretty fast, although its performance depends on your system's speed.

The program also allows you to schedule scannings and update checkings. You can schedule scannings from 1 to 7 days, and set the exact hour at which you want the program to scan your system. The program can also check for updates on startup every two hours.

Maybe the only drawback of this program is its price tag, as there are several free programs that do pretty much the same. Nevertheless, you may want to give it a try.

The shareware version of the program only allows you to scan your system and see the results, but not to fix the system's errors. To do so, you will need to purchase a license.