Unnecessary Files - Version 3.4.3 Very fast and efficient utility for finding and deleting unnecessary files, folders, internet cache (IE and Opera), registry history lists. Regain disk space and keep your system running smoother. Fully customisable. Also comes with a set of built-in tools for uninstalling programs, for manipulating start-up programs, file associations, invalid and orphaned registry entries, and duplicate files. Indispensable tool for the home user, businesses, schools and libraries.