Sadeaner is a good tool for cleaning up the PC
OpenSCAD Graph Editor
Simple Windows cleanup utility
cleans registry, cleanup disk, defrag drive
A feature-rich and high-performance data access components for MS SQL
Portable tool for downloading files and automatic encryption
Windows Installer Directory Cleaner
Easy and fast tool for delete all the emails in your account
Little System Cleaner is an all in one system cleaner.
Removes files that are no longer needed to increase your privacy
Windows Cleanup and Optimization Tool
Free up valuable disk space
Compact the Windows Registry