Click&Clean - Click&Clean is an inventive and free of cost answer for your PC that permits you to check your PC for Malware.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Baidu PC Faster - Baidu PC Faster is a free, lightweight PC optimizer with an easy-to-use and fun interface.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode