CCleaner is a tool for improving system efficiency by cleaning up files, fixing registry errors, and managing system startup. It deletes cache, temp files, browser history, restore points, and duplicate files to free up space. Includes registry cleaner, uninstaller, and free space eraser. Ideal for users aiming to boost system performance by cleaning up unnecessary files and fixing issues. CCleaner had a past security incident but current versions are secure with regular updates.
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