EasyCleaner is a little application that was developed to search Windows' registry for entries that are pointing nowhere.
Deleting these entries will speed your computer up. But as you already might know, deleting entries from registry can be dangerous for your computer, so it is wise to make a backup of your registry.
EasyCleaner also lets you delete all kinds of unnecessary files like temps, backups etc. You can search for duplicate files and you can view some intresting info about your disk space usage!
You can download it at http://www.majorgeeks.com/download414.html
yeah it's a good registry cleaner but as of right now this site only does open source apps because of the legalities of modifying apps. easycleaner is actually already portable though. you can download the zip version of it here http://personal.inet.fi/business/toniarts/ecleane.htm
I just like having the launcher for it, just like all of the other apps hosted here. Too bad it can't be in PAF format. Also, the app does more than just clean the registry. It also cleans duplicate files, shortcuts, browsing history, MRU Objects and so on.
Failure is not an option. It comes bundled with Windows.