Glary Utilities is a comprehensive system cleaner and performance booster.

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

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

Hiren's BootCD (HBCD) is a bootable CD containing a number of diagnostic programs such as partitioning agents, system performance

Auslogics Registry Cleaner is a registry clear software for WIndows.

Windows Repair is a utility that contains numerous mini-fixes for Windows.