Avira System Speedup

Avira System Speedup screenshots

Optimize your computer's performance and remove all unnecessary files
Avira System Speedup 4.7 : Settings

Alternative downloads

AVS Registry Cleaner
4.1.7.293
FREE
Keep your Windows registry clean and get rid of all unnecessary files.
WinASO Registry Optimizer
5.7.0
Utility that can fix all the registry errors.
Ace Optimizer Utilities
6.5.0
A collection of tools to optimize and clean your PC.