CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
Recuva - Accidentally deleted an important file? Lost files after a computer crash?
SD Maid - SD Maid is the perfect way to keep your mobile device in optimal shape by cleansing it of all the old data that clutters up the works. Inside the app, you'll find a number of advanced tools that will help you keep track of your files and apps.
Auslogics BoostSpeed - Auslogics BoostSpeed: Tune up Your PC for Peak Performance! . * Free trial lets you clean out junk files, enable several Live Speedup tools and run each of the 18 apps under All Tools once.