CCleaner, developed by Piriform Ltd., is a powerful optimization tool for Windows 7. It can easily clean up your system, removing junk files and improving overall performance. Not only that, it also includes a registry cleaner and a startup manager to help speed up your PC's boot time. With a user-friendly interface, CCleaner is a must-have for anyone looking to optimize their Windows 7 computer. Download it now and see the difference it can make!

CCleaner is the number-one tool for cleaning your PC.

It protects your privacy and makes your computer faster and more secure!

CCleaner is a freeware system optimization, privacy and cleaning tool. It removes unused files from your system - allowing Windows to run faster and freeing up valuable hard disk space. It also cleans traces of your online activities such as your Internet history. Additionally it contains a fully featured registry cleaner. But the best part is that it's fast (normally taking less than a second to run) and contains NO Spyware or Adware! :)

CCleaner's simple and intuitive layout will appeal to users of all skill levels. Its four features -- Cleaner, Registry, Tools, and Options -- are prominently displayed on the left side of the window. We started with the Cleaner first, which breaks down your cleaning options into two tabs: Windows and Applications. The program works by first analyzing your system and then running the cleaner itself. By selecting the appropriate check boxes, we were able to clean our temporary Internet files, cookies, history, and cache in both Internet Explorer and Firefox at the same time, as well as empty our Recycle Bin and rid our computer of Windows log files.

CCleaner on all your PCs

The world's favorite PC optimization tool now available in the cloud!

Clean locally or remotely
Defrag your drives
Fix problems in the Windows Registry

Speedy setup
Get started with CCleaner Cloud in less than 1 minute!

Add and remove software
Optimize the software installed on every machine.


Monitor from anywhere!

Clean, optimize and monitor your home computers wherever you are or manage an entire campus-wide IT network.

Run or schedule your optimization
Bug fix remotely
Control your startup programs

System information
View CPU load, memory usage, full disks and over a 100 more essential stats!

Predictive email alerts
CCleaner Cloud warns you before problems occur!



Cleans the following:

* Internet Explorer
* Firefox
* Google Chrome
* Opera
* Safari
* Windows - Recycle Bin, Recent Documents, Temporary files and Log files.
* Registry cleaner
* Third-party applications
* 100% Spyware FREE

Features:

Faster Computer
Is your computer running slow? As it gets older it collects unused files and settings which take up hard drive space making it slower and slower. CCleaner cleans up these files and makes it faster instantly.

Safer Browsing
Advertisers and websites track your behavior online with cookies that stay on your computer. CCleaner erases your browser search history and cookies so any internet browsing you do stays confidential and your identity remains anonymous

Fewer Errors & Crashes
Over time your registry can become cluttered with errors and broken settings which lead to crashes. CCleaner’s patented registry cleaner clears out this clutter to make your PC more stable.

Quicker Startup
Many programs run silently in the background when you start up your computer. CCleaner helps you get to work, or play faster by letting you disable unneeded programs.

New Release
Expanding our cleaning:
New AI Tools category in Custom Clean We've added a new AI Tools category to Custom Clean. You can now find, analyze, and clean junk files from popular AI apps including ChatGPT, Claude, Cursor, Codex, Antigravity, Gemini, and LM Studio.
Keeping you safe:
Improved file-write security We've fixed a security issue found during an internal audQit that could have allowed unauthorized file writes under certain conditions.
Fixed a crash that stopped the CCleaner service from starting Resolved a startup crash caused by an internal lookup error that affected over 1,000 users.
Better handling of browser runtime updates CCleaner now properly detects when the Edge WebView2 runtime has been updated or removed, preventing crashes when opening in-app content.
Smoother app shutdown We've fixed a timing issue during shutdown that could cause a crash when background tasks were still running.
Fixing bugs:
Installer now verifies WebView2 before launch The installer checks that the WebView2 runtime is actually present on disk, not just registered, and re-installs it if needed. This prevents launch failures some users experienced after installation.
Fixed an error when updating CCleaner Resolved an issue where some users saw a 0x404 error during the update process.
Faster app launch and no more duplicate windows CCleaner now opens roughly 3–6× faster. Launching CCleaner while it's already running correctly brings the existing window to the front instead of opening a second one.
Performance Optimizer no longer mislabels programs Fixed an issue where the WSL Service was incorrectly shown as "Microsoft GameInput" in Performance Optimizer.
Startup Manager shows the correct program names again Fixed an issue introduced in 7.09 where Startup Manager displayed wrong names for several common programs.
Your chosen landing page is now respected CCleaner now opens to the page you've set in Settings, instead of always defaulting to Health Check.
Health Check bro
[ CCleaner release history ]

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