Hi,
I've been using Wise registry cleaner - the disk cleaner is good too.
I used to use Auslogics registry defrag. tho. am currently using Quicksys - does the same job, and it's smaller and lighter
Quicksys RegDefrag - Defrag, Optimize and Compact Windows Registry
GlaryUtilities is a free all in one I've tried recently - includes lots of tools including regdefrag and file recovery - versions 2.6 on are x64 compatible
www.glarysoft.com
SIW2