CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Disk Drill by Cleverfiles - Recover any type of deleted files in Windows & Mac including Office documents, messages, and media files quickly and easily.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
Recuva - Accidentally deleted an important file? Lost files after a computer crash?
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
EaseUS Data Recovery Wizard - Advanced data recovery software to do format recovery, unformat and recover deleted files emptied...