Here’s some useful information gleaned from GiveawayOfTheDay comments on a  recent offer:

First clean the Registry of your machine using award-winning freeware like “Auslogics Registry Cleaner”, “(Portable) Wise Registry Cleaner” and/or (Portable) CCleaner + CCEnhancer

And combine them with “Registry Trash Keys Finder” for more advanced Registry junk cleaning.

Then, to defrag your cleaned registry, just use one of this FREE APPS ki$$ing your wallet goodbye for good:

http://www.softpedia.com/get/Tweak/System-Tweak/Pagedefrag.shtml
http://www.tweaking.com/content/page/advanced_system_tweaker.html (==> only for bloody geeks like me…LOL!)
http://www.winmend.com/registry-defrag (==> New Giovannni’s entry)
http://www.puransoftware.com/Registry-Defrag.html
http://www.softpedia.com/get/Tweak/Registry-Tweak/Quicksys-RegDefrag.shtml
http://www.registry-clean.net/free-registry-defrag.htm
http://www.simnetsoftware.com/products/simnet-registry-defrag.html
http://www.softpedia.com/get/Tweak/Registry-Tweak/Baku.shtml

Finally, once you have finished to optimize your system, you can even test for FREE your PC performance (CPU, RAM, HDD, 2D Graphics, 3D Gaming Graphics etc…) to find out its real speed, so as to make sure that it’s running at its top speed!!!

* AUSLOGICS BENCHTOWN
http://www.softpedia.com/get/System/System-Miscellaneous/Auslogics-Benchtown.shtml

Screenshots:
http://www.softpedia.com/progScreenshots/Auslogics-Benchtown-Screenshot-192889.html

* QwikMark
http://www.softpedia.com/get/System/Benchmarks/QwikMark.shtml

Total cost of the entire PC maintenaince operation ==> 0 $/€

Stable freeware’s from reliable developers.

Auslogics Registry Defrag
http://www.auslogics.com/en/software/registry-defrag/

Wise Registry Cleaner (has inbuilt registry defragger too)
http://www.wisecleaner.com/wiseregistrycleanerfree.html

Quicksys RegDefrag 2.9 (although development stopped – still good)
http://www.softpedia.com/get/Tweak/Registry-Tweak/Quicksys-RegDefrag.shtml

Little Registry Optimizer

original file here

TweakNow 2012 4.0.5 (freeware)Later current versions are all shareware
it has reg defragger as well as lot of other tweaking features – can be downloaded from link given below :
http://tweaknow.com/download/PowerPack405.exe

No warranty or endorsement is expressly given or implied. This is for information purposes only and readers are encouraged to research and assess their needs and the best tool to achieve their objective. Always backup (and ensure you can restore the backup) before doing any maintenance activity.