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
System Mechanic Ultimate Defense - Protect the whole family and up to 10 devices with malware and virus protection, password management, internet privacy, speed and optimization, and more.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Advanced System Optimizer - Advanced System Optimizer. Advanced System Optimizer is the most powerful cleanup and optimization software for Windows 10/8. 1/8/7/Vista and XP. We've been developing Windows performance software since 1999.
Clean Master - Some users swear by it, some call it a glorified snake oil that does more harm than good. That can be said about any snake oil, but what specific brand of snake oil can boast almost a billion downloads around the world?