A popular free utility for Windows to remove unnecessary files, clean the registry, and securely delete files to improve system performance and free up hard disk space.
CCleaner is one of the most widely used system cleaning and optimization tools for the Windows operating system. First released in 2004, it has over 2 billion downloads worldwide as of 2020.
The core functionality of CCleaner focuses on removing unnecessary files from your hard drive to free up disk space. It can scan places like your Windows Temp folders, browser caches, downloaded files history, system logs, memory dumps, and more. By deleting these unneeded files, you can recover significant amounts of hard drive space.
Another key feature is CCleaner's registry cleaner. It scans the Windows registry for invalid, obsolete, and erroneous entries that can slow down your system's performance over time. By cleaning the registry, it helps keep your PC running smoothly.
CCleaner also includes other useful tools. Its drive wiper can securely overwrite deleted files to prevent recovery. The startup manager allows controlling which programs launch at Windows startup. There are also utilities for uninstalling programs, finding duplicate files, and recovering deleted files from the Recycle Bin.
An ad-supported free version is available with all the key cleaning features. An optional paid Pro version ($24.95/year) includes real-time monitoring, automatic background cleaning, free technical support, and other additional tools.
Here are some alternatives to CCleaner:
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