CCleaner Free 6.4
Latest version • Updated May 2026
CCleaner Free 6.4 is the most popular and trusted PC cleaner in 2026. It safely removes junk files, temporary files, browser cache, cookies, old Windows updates, and unnecessary logs to free up massive amounts of disk space and significantly improve system speed. With its powerful registry cleaner, startup manager, duplicate finder, and browser cleaning tools, CCleaner helps your computer run faster, smoother, and more efficiently while protecting your privacy by deleting traces of online activity from Chrome, Firefox, Edge, and other programs. Completely free for personal use, officially supported, and fully compatible with Windows 11, CCleaner remains the go-to solution for millions of users worldwide who want a clean, fast, and optimized PC without paying for premium features or dealing with ads.
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About CCleaner Free
CCleaner Free 6.4 is the most popular and widely used PC cleaning and optimization tool in the world. For over 15 years it has helped millions of users safely remove junk files, clean the Windows registry, manage startup programs, and delete browser traces to keep their computers running faster, smoother, and more efficiently.
Developed by Piriform (a company under Avast), CCleaner Free is trusted by home users, students, and small businesses because it is simple, effective, and completely free for personal use. It quickly removes temporary files, cache, cookies, old Windows update files, hibernation files, and other unnecessary data that accumulates over time and takes up valuable disk space.
In the 2026 version (6.4), CCleaner received significant improvements in cleaning performance, better Windows 11 compatibility, enhanced browser cleaning for the latest versions of Chrome, Firefox, and Edge, and a more intelligent registry cleaner that safely fixes errors without risking system stability.
CCleaner Free remains the go-to solution for anyone who wants a fast, clean, and optimized PC without installing heavy all-in-one optimizers or paying for premium features. It strikes the perfect balance between power and simplicity.
Key Features
- Smart Cleaner – automatically removes temporary files, cache, logs, old Windows updates, and unused system files
- Registry Cleaner – safely scans and fixes registry errors to improve system stability
- Startup Manager – disables unnecessary programs to significantly speed up boot time
- Browser Cleaner – completely clears cookies, history, cache, and tracking data from Chrome, Firefox, Edge, and other browsers
- Software Updater – checks and updates installed programs to the latest versions
- Duplicate Finder – finds and removes duplicate photos, videos, and documents to free up space
- Drive Wiper – securely wipes free disk space so deleted files cannot be recovered
- Health Check – one-click system analysis and recommended optimizations
System Requirements
CCleaner Free 6.4 is very lightweight and runs smoothly on almost any Windows computer — from older machines to the latest high-end Windows 11 systems. It uses minimal system resources and does not slow down your PC during normal operation.
- Windows 11 / Windows 10 / Windows 8.1 (32-bit and 64-bit supported)
- 2 GB RAM minimum (4 GB or more recommended for best performance)
- 100 MB free disk space during installation
- Internet connection recommended for automatic updates and latest cleaning definitions
- Processor: 1 GHz or faster
- Fully compatible with the latest Windows 11 24H2 update
Best Alternatives to CCleaner
If you are looking for other PC cleaning tools in 2026, here are the most popular and effective alternatives to CCleaner Free. Each has its own advantages depending on whether you prefer simplicity, deep cleaning, or all-in-one optimization.
- BleachBit — powerful open-source cleaner with very deep cleaning capabilities and secure file shredding
- Wise Disk Cleaner — lightweight, fast, and focused purely on disk cleanup with minimal interface
- Advanced SystemCare Free — all-in-one PC optimizer with cleaning, security, and performance tools in one program
- PrivaZer — excellent privacy-focused cleaner that removes deep traces and securely wipes data
- Windows 11 Built-in Storage Sense — basic but integrated cleaning tool from Microsoft