27 Best Free Registry Cleaner Programs

A list of the best freeware registry cleaner and registry repair software

Registry cleaners are software programs that remove unnecessary entries from the Windows Registry. They are especially useful for removing registry entries that point to files that no longer exist.

Lifewire / Nusha Ashjaee

This list includes only freeware—in other words, only completely free registry cleaners. Any registry cleaner program that charges a fee of any kind (e.g., shareware, trialware) isn't included here. If one of these programs has started to charge, and we haven't removed it yet, please let us know.

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list of registry issues in ccleaner
What We Like
  • Creates a backup file before making any changes to the registry.

  • Contains outstanding feature set.

  • Offers installable and portable versions.

What We Don't Like
  • Installer adds another program unless expressly denied permission.

  • Download page is confusing.

  • Could use expanded documentation for new users.

  • Free only for home users.

CCleaner is the best free registry cleaner program we've tested. It's easy to use, prompts you to back up the registry before it makes changes, and includes a number of other useful tools.

Piriform provides both installable and portable versions of their free registry cleaner.

If you're set on using an automated tool to fix an issue you have that's caused by a registry problem, we highly recommend you use Piriform's CCleaner freeware registry cleaner tool.

We tested CCleaner v6 in Windows 11 using both their portable and installable versions. It can also clean the registry in Windows 10, 8, and 7.

Free registry cleaners should only be used to troubleshoot specific issues.

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Wise Registry Cleaner

Wise Registry Cleaner v10.7.1
What We Like
  • Easy to use.

  • Automatically backs up registry before cleaning.

  • Scheduled automatic registry cleaning.

  • Three levels of registry scan.

What We Don't Like
  • May try to install an extra program during setup.

  • Requires a reboot.

Wise Registry Cleaner comes in very close to the other top-rated registry fix tools. They've put together a fantastic free registry cleaner program.

Some big pluses for Wise's free registry cleaner include fast registry scans, scheduled scans, in place updates, and a clear separation between normal issues and those that are "unsafe," a feature we loved.

We don't like the fact that Wise Registry Cleaner pushes for a download of Wise Disk Cleaner at the end of the installation, but it's easy to skip.

It comes in both installable and portable versions and can be used on Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP (only the portable version works on XP).

We tested the installable version of v10 in Windows 11.

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Auslogics Registry Cleaner

Auslogics Registry Cleaner 10
What We Like
  • One-click cleaning.

  • Automatic registry backup.

  • Can be paused and then continue later.

  • Nicely formatted report of problems found and fixed.

  • Lets you create a portable version.

What We Don't Like
  • Tries to install additional programs during setup.

  • Several extra features aren't free.

Auslogics Registry Cleaner is another great registry cleaner program—it's probably one of the easiest registry cleaners to use out of all the tools we've tested.

One nice feature of this registry fixer is the extremely detailed reports page. After any cleaning, you can open a document that shows, in detail, everything that the program fixed.

In the settings is where you can access Rescue Center, which is a list of registry backups made before each cleaning. You can edit the settings to keep the backups forever if you never want to lose them.

It's compatible with modern versions of Windows like Windows 11 and Windows 10, plus Windows 8 and Windows 7.

Auslogics Registry Cleaner v10 was tested in Windows 11.

Before and after installing Auslogics Registry Cleaner, you may be asked to install other programs, but they're easy to deselect it if you wish not to install it.

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JetClean v1.5.0 in Windows 8
What We Like
  • Clean, intuitive interface.

  • Automatically backs up registry.

  • Scheduled cleanings.

  • One-click scan.

What We Don't Like
  • Tries to install toolbar during installation.

  • Portable version generated within installed version.

  • Keeps a lot of cookies.

JetClean, a free registry cleaner by BlueSprig, isn't one we see mentioned a lot, but we found it to be very well done. It scanned the entire registry in just a few seconds and has a well-designed interface.

There are two major things we don't like about JetClean. One: The number of cookies that it considers keepable, by default, is a bit excessive. Two: It tries to install a toolbar, but you can decline it during installation.

We also don't like that there's not an easily available portable version of JetClean. Yes, one exists, but you have to "generate" one from within the installed version on your computer. Strange!

The JetClean registry cleaner supports both 32-bit and 64-bit versions of Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000.

We tested v1.5.0 in Windows 10 and Windows 7.

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Registry Repair

Glarysoft's Registry Repair
What We Like
  • Creates backup automatically.

  • Uncluttered interface.

  • Program updates automatically.

What We Don't Like
  • No option to create a restore point.

  • May try to install unneeded programs during setup.

Glarysoft's Registry Repair is another good freeware registry cleaner. It's pretty simple to use and is a good option if some of the better tools aren't working out for you.

Registry Repair was designed for Windows 11, Windows 10, Windows 8, Windows 7, and some older versions of Windows.

We tested v5.0.1 in Windows 10 and Windows 7.

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Advanced SystemCare Free

Advanced SystemCare Free 15 manual clean mode options
What We Like
  • One-click scan and repair mode.

  • No need to view the scan results before repairing the registry.

  • Good for users who aren't tech-savvy.

What We Don't Like
  • Must uncheck all other options before scanning the registry.

  • All the features can be overwhelming.

Advanced SystemCare Free is one of IObit’s many freeware programs. Registry Clean is the utility within it that does the registry cleaning.

We find the registry scan to be very quick, regardless of the number of errors the program finds. Advanced SystemCare is great for the non-tech-savvy because you don’t even have to view the results to repair them. Moreover, you could actually shut down or restart your PC when the cleaning is finished, so you don’t have to worry about it.

One thing we don’t like is that if you’re after a particular cleaning type, like registry cleaning, you must first uncheck all the other options. All the features that are offered can be overwhelming and get in your way.

To run the registry cleaning process, choose Manual Mode from the Care tab. Choose Select All a couple of times to clear out all the checkboxes, and then choose Registry Clean followed by SCAN.

The Deep Clean option requires the professional version of the program.

ASC works in Windows 11, Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. We tested v16 in Windows 11.

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PowerTools Lite

PowerTools Lite 2013 in Windows 8
What We Like
  • Interface isn't confusing.

  • Generates automatic registry backups.

  • Highly customizable.

What We Don't Like
  • Interface shows its age.

  • Lots of options increase the chance of causing problems.

  • Not as user-friendly as other registry cleaners.

PowerTools Lite is a freeware registry cleaner created by Macecraft, makers of several popular Windows utilities. PowerTools Lite was fast and found a similar number of needless registry entries as other tools in this area of this list.

No toolbars or other programs tried to install like with some other free registry cleaners.

It works with Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. However, the tool isn't supported above Windows 7.

We tested jv16 PowerTools Lite in Windows 8. 

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Argente Registry Cleaner

Argente Registry Cleaner v3.1.0.1
What We Like
  • Choice of two analysis modes.

  • Easy to undo changes to registry.

  • Backs up registry automatically.

What We Don't Like
  • Interface learning curve.

  • No scheduled scans.

Argente Registry Cleaner is a registry cleaner that walks you through a tiny wizard when you first open the program, which makes scanning for errors rather easy. It found about as many issues as the other programs in this list.

Registry backups are created automatically before removing any registry items, and an automatic maintenance mode does all the cleaning for you when your computer first starts, without any intervention on your part, which is really nice.

Undoing changes to your registry are really easy because you can either restore to an automatically created backup or make your own registry backup whenever you like, and then restore the registry from the Undo changes section of the program.

Argente Registry Cleaner works in Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. We tested v3.1 on Windows 10 and Windows 7.

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Eusing Free Registry Cleaner

Eusing Free Registry Cleaner v3.2 Registry Cleaner
What We Like
  • User-friendly interface.

  • Scans for invalid or obsolete information.

  • Automatic registry backup.

  • No adware.

What We Don't Like
  • Insufficient descriptions of registry problems.

  • May require using RegEdit after scan.

Eusing Free Registry Cleaner is another free registry cleaner. We frequently see references to this particular registry cleaner on other "top" lists, but we didn't find anything spectacular about it.

Remember, a registry cleaner program is not a regular PC maintenance tool. Registry cleaners don't typically speed up your computer or provide any other day-to-day improvements to your PC. Registry cleaners should only be used to help solve specific kinds of problems.

Eusing Software says the program works on Windows 10, 8, 7, Vista, and XP. We tested v4.6 in Windows 10.

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Kingsoft PC Doctor

Kingsoft PC Doctor v3.7 Registry Cleaner
What We Like
  • Automatic registry backup.

  • Uncluttered interface.

  • Includes additional useful tools.

What We Don't Like
  • Hasn't been updated in years.

  • No scheduling options.

  • Can't fix all identified problems, which reappear on subsequent scans.

Kingsoft PC Doctor is another registry cleaner embedded in a software suite.

This program is really easy to use, and the registry cleaner isn’t hidden away deep inside – it’s very easy to spot and run without any hassles.

One thing we didn’t like about Kingsoft PC Doctor is that you can’t schedule a registry cleaning at a later date, but you must instead run it manually. While this is the case, the manual scans do find a hefty amount of errors that are just a click away from being removed.

It's said to work only with Windows 7, Vista, and XP, but we tested v3.7 in Windows 8 and Windows 10 without any issues.

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EasyCleaner v2.0
What We Like
  • Automatic registry backup before scan.

  • Easy-to-use interface.

  • Includes other useful tools.

  • Plenty of settings options.

What We Don't Like
  • Doesn't work with more recent versions of Windows.

  • Hasn't been updated in years.

  • No scheduling options.

EasyCleaner is one of the oldest and most trusted free registry cleaners out there. The interface is a bit dated, but it's a solid registry repair tool.

It took considerably longer than other registry cleaners to scan the registry, but it did a fine job overall. We also liked that we weren't asked to install some other completely unrelated and useless program during the install!

The ToniArts website says that the software works in Windows XP, 2000, NT, ME, 98, and 95, but you might have luck using it in newer versions of Windows, too.

We tested v2.0.6.380 in Windows 8 without any problems, but it didn't work correctly for us in Windows 10. Both installer and portable versions of this registry cleaner are available.

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Little Registry Cleaner

Little Registry Cleaner free registry cleaner program
What We Like
  • Automatic registry backup.

  • Portable version.

  • Open source, multi-language software.

What We Don't Like
  • Ad supported.

  • Little guidance.

  • Slower than some other programs in this field.

  • Development appears to have ended.

This free Windows Registry cleaner program packs some great features into a minimal program. 

For starters, Little Registry Cleaner found a lot more problems in the registry than most other registry cleaners, so if one of the others in this list isn't working well for you, try this one.

This program also lets you choose which folder on your computer to use for automatic registry backups before cleaning, can ignore certain files and folders from being scanned, will create a restore point before deleting the registry files, and can scan your computer for invalid registry entries on a schedule.

Little Registry Cleaner should work fine with any recent version of Windows, plus older ones like Windows XP. We tested version 1.6.0 in Windows 10 and didn't run into any problems.

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Free Window Registry Repair

Free Window Registry Repair v3.1 Registry Cleaner
What We Like
  • Options for full and custom scans.

  • Creates restore points.

  • Option to back up registry.

  • Can be set to scan registry at system startup automatically.

What We Don't Like
  • Insufficient guidance on how to use the program.

  • Requires multiple scans to identify all errors.

Free Window Registry Repair reminds us a lot of Eusing Free Registry Cleaner, so our assessment is similar. Try this registry cleaner if you need to, skip it and try a better one if you don't.

Registry scan time with Free Window Registry Repair was longer that with some of the higher rated registry cleaners, but overall it looks like a decent tool.

RegSofts Software's website says it is compatible with Windows 10, 8, 7, Vista, XP, and 2000, NT, ME and 98.

We successfully used Free Window Registry Repair to clean up the registry in both Windows 10 and Windows 7.

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nCleaner v2.3.4 Registry Cleaner
What We Like
  • Easy to use.

  • Complete toolset.

  • Aggressive cleaner best for experienced users.

What We Don't Like
  • Hasn't been upgraded in years.

  • New users could end up deleting items the computer needs.

  • Confusing interface.

nCleaner seems to be as good a registry cleaner as any other in this area of our list. It does all your standard registry cleaning, as well as some system cleaning.

We found nCleaner's interface to be a little confusing, and we don't like that it hasn't been updated in years. However, we felt compelled to at least include it here after receiving so many suggestions to add it to the list.

We tested the nCleaner v2.3.4 in Windows 10 and 8 and it seemed to work well, but it's only listed as supporting up to Windows Vista.

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Secure Eraser

Secure Eraser v5.000 in Windows 8
What We Like
  • Attractive, easy-to-use interface.

  • Scan generates list of obsolete and invalid files.

What We Don't Like
  • Asks permission to install unrelated program.

  • Annoying prompts to upgrade to paid version.

  • Documentation in German.

Secure Eraser is a program suite that includes a dedicated section for registry cleaning as well as for other tools like a file shredder.

Secure Eraser's registry cleaning function seemed to find most of the same errors and invalid entries as the other cleaners in this list.

After cleaning the registry, a results page will display in your Internet browser. This can be annoying, but it's easily toggled off from the settings.

It works with Windows 11, 10, 8, 7, Vista, and XP. We tested version 5.

After setup has installed Secure Eraser, it may ask you to add another program to your computer, but you can skip over this if you'd rather not install the additional program.

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ACleaner v4.0 Registry Cleaner
What We Like
  • Scans all or part of the registry.

  • Provides list of all errors.

  • Removes all or selected errors.

  • Make backup automatically.

What We Don't Like
  • Interface looks outdated.

  • Contains unrelated tools that new users may find confusing.

ACleaner is another free registry cleaner. Although it looks a bit outdated, it works for the newer operating systems and does the job well.

The Windows registry is backed up automatically before fixing any issues, and restoring is just a couple clicks away.

There's also a startup manager and system cleaner that comes bundled with ACleaner, but the registry cleaner isn't difficult to find.

ACleaner works with Windows 10 down through Windows 2000. We tested v5 in both Windows 10 and Windows 7 and didn't find any problems.

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PCSleek Error Cleaner

PCSleek Free Error Cleaner v3.46 Registry Cleaner
What We Like
  • Backs up registry before scan.

  • Option to automatically repair items after each scan.

  • Restore deleted items any time.

What We Don't Like
  • Basic-looking interface.

  • Hasn't been updated in years.

PCSleek Error Cleaner is a registry cleaner with an easy-to-use interface. It combines a few other search parameters in addition to the registry, but they’re very easy to disable if you just want to fix registry issues.

Although the program looks outdated and simple, it backs up the registry before cleaning and seems to find about as many problems as the other registry cleaners in this list.

PCSleek is said to work in Windows 7, Vista, and XP. We tested v3.46 in Windows 8 without any issues.

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Registry Distiller

Registry Distiller v1.03 Registry Cleaner
What We Like
  • Fast scan quickly locates errors.

  • Backs up registry automatically.

  • Undo changes features.

  • Registry wizard.

What We Don't Like
  • Clunky interface is't easy to work with.

  • No option to select custom areas of the registry.

Registry Distiller is another free registry cleaner, but it doesn’t look as neat as the others in this list. The program’s interface isn’t very easy to work with or view results in. However, with that being said, it apparently does a great job finding errors.

When we tested Registry Distiller, it took 10 seconds to find 500+ errors, which is much better than some of the other registry cleaners in this list.

It's said to work in Windows Vista and XP. We tested Registry Distiller version 1.03 in Windows 8 and Windows 7 and didn't have any issues.

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SS Registry Fixer

Registry Fixer v2.0 Registry Cleaner
What We Like
  • Super easy to use.

  • Option to back up registry enabled by default.

What We Don't Like
  • Contains only basic functions.

  • Hasn't been updated in years.

SS Registry Fixer is a free registry cleaner from SS-Tools that is likely one of the easiest programs we've ever used. With barely any options, and an open, clean program window, it’s easy to start a scan in seconds.

Only one option is available with Registry Fixer, which is to back up the registry before cleaning. This setting is enabled by default.

Registry Fixer is said to work with Windows XP only, though we tested version 2.0 in Windows 8 without any problems.

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Registry Life

Registry Life v4 in Windows 10
What We Like
  • Clean user interface.

  • Registry wizard.

  • Backs up before scanning.

  • Defrags the registry.

What We Don't Like
  • Offers to install promotional and third-party software.

  • Contains advertisements.

Registry Life, by ChemTable Software, is a free registry cleaner that runs you through an easy-to-use wizard to clean the registry.

Using Registry Life, you can not only fix registry issues but also defrag the registry and even have quick access to an additional free tool to stop or delay programs from starting up with your computer.

One thing we didn't like while testing Registry Life is that there were occasional advertisements off to the side of the program.

Registry Life should work with both 32-bit and 64-bit versions of Windows 8 down through Windows XP. We were also able to make it work in Windows 10, but the startup optimizer didn't always function as advertised.

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Registry Recycler

Registry Recycler v0.9.2.7
What We Like
  • Clean interface.

  • Defrags the registry in addition to scanning for errors.

  • Available in installed and portable versions

  • Option to schedule daily or weekly registry check.

What We Don't Like
  • Sometimes requires multiple scans to find all errors.

  • Must close all running applications before defragging the registry.

  • Some virus scanners call it "unwanted" or "deceptive" software.

Registry Recycler is another free registry cleaner that seems to find more registry errors than some of the other programs in this list.

The program automatically creates registry backups before cleaning to ensure you can always return to a working state if anything goes wrong during the process. In addition to cleaning, Registry Recycler can also defrag the registry.

You can use this free registry cleaner tool as a portable program or install it like normal software, depending on the version you pick on the download page.

Registry Recycler works with Windows 10, 8, 7, Vista, and XP. We tested version in Windows 8.

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TweakNow RegCleaner

TweakNow RegCleaner v7.3.1 Registry Cleaner
What We Like
  • Offers regular and deep scanning options.

  • Fast scans and defrags.

  • Creates backup before scanning.

  • Doesn't delete anything until instructed to do so.

What We Don't Like
  • Registry defrag results aren't visible until after a reboot.

  • Difficult to identify which items will be removed and which will stay.

TweakNow RegCleaner is another registry cleaner that serves as a suite with many other built-in tools.

The registry cleaner in this program has a regular and deep scanning option to ensure it gets as many errors and problems as it can. You can even open a particular path directly in the Windows Registry Editor to see exactly what you’re looking at.

One thing we didn’t like about this program is that it’s a little confusing to know which registry items you’re going to remove and which will stay intact.

TweakNow RegCleaner works with Windows 10, 8, 7, Vista, and XP. We tested v7.3.6 in Windows 8.

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Toolwiz Care

ToolWiz Care v4.0 Registry Cleaner
What We Like
  • Clean and colorful interface.

  • Scans quickly.

  • Option to set restore point.

  • Huge collection of tools.

What We Don't Like
  • Registry cleaner is only one of 50 tools, which can be overwhelming.

  • May require multiple scans to locate all errors.

  • Insufficient help for new users.

Toolwiz Care has over 50 built-in tools, one of which is called “Registry Cleanup” in the Cleanup tab of the program.

The register cleaner in this program runs quickly, categories the errors, and removes them in nearly an instant. It even seemed to find more registry issues than some of the other programs from this list.

An option in the settings can be enabled to automatically create a restore point before you delete any registry problems, which is a good way to safeguard against possible computer issues from the deletion process.

You can use Toolwiz Care without installing it by clicking the "Run without installing" button when you first open the setup file.

Toolwiz Care works with Windows 10, 8, 7, Vista, and XP. We tested Toolwiz Care v4.0 in Windows 10 and Windows 8.

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MV RegClean

MV Regclean v5.9
What We Like
  • Powerful backup and restore features.

  • Restore point.

  • Portable version also available.

What We Don't Like
  • Outdated interface.

  • Slightly slow scans.

  • Multiple scans may be needed to remove all errors.

MV RegClean looks very outdated, and it may very well be, but it seems to do well with deep registry cleaning.

While testing this program, it seemingly found many more problems than most of the other programs in this list. The registry is automatically backed up, so there’s no need to do it manually.

One thing we disliked about this registry cleaner is that the interface is a little difficult to maneuver around in.

This program should work in all versions of Windows. We tested v5.9 in Windows 8 without any issues.

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Baidu PC Faster

Baidu PC Faster registry cleaner
What We Like
  • Intuitive user interface.

  • Deep clean option.

  • Auto-backup of registry before scan.

  • Contains additional useful programs.

What We Don't Like
  • Difficult to identify which files are to be cleaned.

  • May require multiple scans to remove all errors.

Baidu's PC Faster is a program suite that contains tons of system optimization tools, one of which is a registry cleaner. The program installs and works fast, and has a friendly interface to it.

It's great that Baidu PC Faster automatically backs up the registry before modifying it, but you, unfortunately, must scan and clean for Windows junk files at the same time you're cleaning registry issues.

You can find the registry cleaner portion of Baidu PC Faster in the Cleaner menu.

We tested Baidu PC Faster in Windows 10, 8 and 7 without any issues. It should also work in Vista and XP.

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Your Cleaner

Your Cleaner v1.11
What We Like
  • Make automatic backup of registry before scan.

  • Easy-to-use interface.

  • Scans registry for all files or selected file types.

What We Don't Like
  • Download is a RAR file.

  • Default language for installer may be Estonian (but it can be changed).

Your Cleaner is a nice registry cleaner with an easy-to-use interface.

While testing this program, it found a good amount of errors, making it comparable to most of the other programs in this list. Also, the registry is automatically backed up before any cleaning is performed, which is a nice feature.

Your Cleaner works with all versions of Windows. We tested v1.11 in Windows 10 and Windows 8.

The download is a RAR file, meaning you'll need a program like 7-Zip to open it. Also, the default language for the program installer may be Estonian, but you can easily change it from the drop-down box.

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Registry error highlighted in RegScrubVistaXP
What We Like
  • Efficient registry-cleaning function.

  • Options to scan entire registry or only sections.

  • Easy-to-use tool.

What We Don't Like
  • Dated interface.

  • Not particularly user-friendly.

  • No automatic backup feature.

RegScrubVistaXP may not look modern at all, but the registry cleaning function is very good.

This program found many more invalid registry entries than most of the programs in this list. With that being said, it’s really not the most user-friendly program out there.

While testing this program, we found it has no automatic registry backup feature, which makes it a little dangerous to use unless you remember to make a backup yourself, which you can do from within the program.

RegScrubVistaXP is said to work with Windows Vista and XP only, but we tested version 1.6 in Windows 10 and didn't run across any problems.

Know of Another Free Registry Cleaner?

We've tried to list every freeware registry cleaner available in this list but if we missed one, let us know so we can add it!

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