1)   Auslogics Registry Defrag 4.1.8
Auslogics Registry Defrag can significantly speed up your computer by helping you to defragment the Registry, remove gaps and make it contiguous, smaller and faster to access. The program is free of charge.

 2)   System Tuneup 1.5
A fast, powerful system cleanup & optimizing utility System Tuneup is an optimizer software that speeds up your system, giving you maximum performance. It includes cleanup tools for Windows system.