Registry Recycler is a Portable Free Registry Cleaner. It can be used to quickly clean and optimize your Windows Registry in an attempt to help improve your Notebook or PC performance.
IObit Toolbox is a free portable collection of tools that can be used to diagnose, repair, and prevent PC problems. Known as "The Ultimate Toolkit for Fixing PC Problems" it includes a
FCleaner is a Free and Portable Windows Cleaner and registry optimization tool. It can help keep your computer system running smooth, fast and at peak potential.
Glary Utilities is a Free Computer Maintenance utility that can ultimately be used to help keep your computer clean and running smoothly. Gary Utilities includes a Registry Cleaner, Shortcut Fixer, Temporary File Cleaner, Spyware Remover ,Startup Manager, and a Tracks Eraser that can be used to Remove Internet History Activity.
CleanAfterMe is a free portable registry cleaner that can be taken with you and run directly from a portable device such as a USB thumb drive. It allows a user to clean registry entries that are automatically created during your daily computer routines.
RegScanner; Is a Windows registry viewer or registry search tool that lets you scan the Windows registry for values that match your specified search criteria. The registry scanner will then display the search results in a list for easy viewing or editing, eliminating the need to press F3 repeatedly to find the correct value.