1)   Registry Toolkit 1.2.10.030
Increase system speed and eliminate errors by cleaning up the clutter the System Registry. Repair windows problems and stop system freezes. Customize your system startup, manage internet explorer plug-ins and more advanced features. - FREE DOWNLOAD

 2)   Advanced Registry Fix 4.0
"Advanced Registry Fix is an awarding winning, extremely easy to use tool designed to safely scan and repair Windows Registry problems with a few simple mouse clicks! Your PC will start quicker, run faster and ultimately be more reliable."

 3)   Registry Rinse 2.0
Registry Rinse is Registry-cleaning software. It will safely clean and repair Windows Registry problems with a few clicks