Glary Utilities is a comprehensive system cleaner and performance booster.

Wise Registry Cleaner is a free registry cleaner to improve PC performance.

Yamicsoft Windows Manager helps you make your system perform faster, eliminate system fault, increase stability and security, and personalize your copy of Win…

Toolwiz Care is a free toolkit designed to speed up slow PC.

AVG TuneUp is a free Windows utility designed to clean up junk files on your PC and possibly increase system performance.

Performance maintainer is an open source software which cleans registry, cleanup disk, defrag drive.

Ashampoo WinOptimizer is a system tweaking utility.

Registrar Registry Manager is an advanced and complete suite of tools that allows you to safely maintain your local registry.