Little Registry Cleaner is a free and open source registry cleaner. Little Registry Cleaner cleans up unwanted and junk files from your Windows registry to make your computer more stable, and improve performance of your computer.
Before cleaning up registry, Little Registry Cleaner makes a backup of registry so that you can revert back to it if you want to.
Apart from cleaning registry, Little Registry Cleaner also lets you manage files that are executed when your computer starts.
Little Registry Cleaner comes with an uninstall manager as well that lets you completely delete software.
Little Registry Cleaner comes in a portable form, and has translation in 17 languages. For a more thorough tweaking of your system, you can try Glary Utilities, or TweakNow.