System cleaners

These cleaners help you make sure that there's no digital detritus cluttering up your hard drives.

  • CCleaner

    CNET Editors' ChoiceApr 09

    CCleaner

    In addition to browser tracks cleaning, CCleaner will clean tracks from other programs, empty your Recycle Bin, delete temporary files, and clean your Registry, quickly scanning for invalid entries before removing them. CCleaner will also back up your Registry before you hit delete, in case it accidentally removes a crucial component. There's also a basic, somewhat rudimentary uninstaller for removing any program on your machine. What Registry entries it doesn't catch, the main Registry checker will, but it's a two-step process that dedicated uninstallers handle nicely on their own.


    Problems with CCleaner are minor at best, and it remains a highly recommended, must-have weapon against system slowdowns, tracking cookies, and the multitudinous debris that can clutter your computer.

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  • Glary Utilities

    Glary Utilities

    This powerful application offers extensive utilities to improve your system's performance and protect your privacy. Glary Utilities' well-organized interface allows users to easily choose from several tools. It cleans unwanted junk files and removes invalid and broken shortcuts, freeing up valuable disk space.


    Its Registry cleaner allows you to scan, remove, and back up Registry entries. You also can wipe out online and Windows traces, although Internet Explorer is the only browser in which this function is supported. To improve the speed of your computer, Glary Utilities offers tools to manage start-up programs and memory optimization. Privacy-conscious users will certainly appreciate its inclusion of a government-standard file shredder to securely delete data. Read full review

    • Not yet rated
    • Average User rating: 4.3 stars out of 4082 user reviews
  • Advanced SystemCare

    Advanced SystemCare

    Advanced SystemCare Free also offers a one-stop shop for cleaning and maintaining your computer for better overall system performance. The interface is very simple, featuring only a few buttons, which makes it easy to get down to cleaning immediately and doesn't confuse you with multiple steps. You can also set it to run on start-up.


    The Maintain Windows section focuses on spyware removal, Registry cleaning, a privacy sweep, and deletion of junk files. The Diagnose System button provides system optimization tools, detects spyware, defragments your disk, and scans for hijacked Windows settings. In our tests the scan and clean for each of these areas took less than 10 minutes to complete. In many of these scans, it is difficult to tell what exactly is being accomplished by some of the tools, but we were able to test against other trusted apps, which confirmed Advanced SystemCare's efficacy in those areas. The program lacks a scheduler, which is only available in the paid version. Read full review