Registry TuneUp is one of the most advanced and effective registry cleaners you will ever need. It is a tool to optimize clean and tune up your system registry - the most important part of windows. It finds and removes errors in your windows system registry, reducing application crashes, and thus enhancing the performance and reducing sluggishness. It cleans all parts, yet it is the safest, using a built-in ignore list to prevent important entries in the registry from being listed. It allows 'undo' operations, has normal and expert modes, and is very fast and powerful.