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MyCleanPC - Try out MyCleanPC's PC cleaner online to find out how you can speed up Windows in 3 easy steps with a professional computer cleaner and free PC diagnosis.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
Onyx Mac - OnyX mac is an all-in-one system maintenance tool and optimizer.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
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.