Autoruns - See what programs are configured to startup automatically when your system boots and you login.
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.