Hm, I used CCleaner, because it seemed reliable.. I kept having registry problems, untill I relized the problem my hard drive was entirely fragmented O.o
Advanced System Care
CCleaner
Eusing Free Registry Cleaner
Glary Utilities
jv16 PowerTools
System Mechanic
TuneUp Utilities
Win Utilities
Wise Registry Cleaner
Other (please mention below)
Hm, I used CCleaner, because it seemed reliable.. I kept having registry problems, untill I relized the problem my hard drive was entirely fragmented O.o