Pinterest Stumbleupon Whatsapp

freeware registry cleanerThe Windows Registry is the root ball of the operating system. Every little bit of system information is rooted in the registry, be it software, drivers, user information or registration data.

Over the lifetime of a computer, numerous tools are installed, updated, moved or removed. Even if done thoroughly, this can create a mess in the registry when files are left behind and references become outdated. As a result, the computer slows down, programs produce registry-related errors, and eventually the system becomes unstable.

There is a number of freeware registry cleaner apps out there that can fix common registry errors, such as missing shared DLLs, incorrect file extensions, invalid paths, missing shortcuts, orphan Active X objects, invalid devices, invalid links to startup programs, and lots more.

Here is a short review of the five best freeware registry cleaners.

5. CCleaner

CCleanerCCleaner definitely is the most popular Windows system optimization tool. It comes with a ton of features, one of them being a freeware registry cleaner.


CCleaner is available for all Windows versions.

If you’re a diligent user, who only installs programs he really needs and who uninstalls programs thoroughly, you won’t need a full-fledged deep registry cleaner. The registry cleaning feature included in CCleaner should be sufficient. And since CCleaner is a tool you should use in the first place, it’s very convenient.

CCleaner can not backup your registry. It’s advisable that you create a manual backup of your registry.

freeware registry cleaner

4. Eusing Free Registry Cleaner

free registry cleanerEusing’s Registry Cleaner is a tool dedicated to registry cleaning. It’s perfect for people who cannot be bothered as it is very basic and easy to use.

The tool is compatible with Windows 95 through Windows 7.

This freeware registry cleaner scans a little deeper and finds many invalid entries that were not detected by CCleaner.

Through > File you can access additional features, such as a full registry or a Windows backup. If you run into problems, you can easily restore a previous registry version under > Action or the Tasks option.

freeware registry cleaner

3. nCleaner second

nCleaner secondnCleaner comes highly recommended from our IT industry superhero and tech guru Karl, who wrote a thorough nCleaner review Ncleaner - The App That Tells CCleaner To Take A Hike Ncleaner - The App That Tells CCleaner To Take A Hike Read More last year. Please refer to Karl’s review for in-depth information!

The latest version of this tool is called nCleaner second and it is one of the most comprehensive free system cleaning tools on the market. Like CCleaner, it also features a registry cleaner.

Unfortunately, it is not yet available for Windows 7. Currently, Windows XP, 2003, and Vista are supported.

registry cleaner review

To clean the registry, go with the > Clean System option and continue with the > Registry clean and repair option. Before you start, you can backup the registry and in case something went wrong, restore it. Right there, you can also create a system restore point, which also backs up your registry.

2. Auslogics Registry Cleaner

auslogics registry cleanerHere we have a very simple to use registry cleaner, which is perfectly suited for the novice user.

Auslogics Registry Cleaner is distributed for Windows 2003 through 7 and supports both 32- and 64-bit.

The cool thing about this cleaner is that it comes with a wizard that guides you through the scan. You can select either a quick or an advanced scan. When running an advanced scan, also critical items, e.g. software and shared DLLs, can be examined. Per default, only safe items are checked and a warning is displayed, if you attempt to scan items that require experience.

registry cleaner review

The wizard offers a restore changes option. So I was wondering where the option to backup the registry was hidden. Per default, registry keys are backed up before you fix problems. However, you can deselect this option.

Finally, the tool displays the speed the computer supposedly gained after the cleaning process. Before you close the application, you can also view the full report.

1. Wise Registry Cleaner

Wise Registry CleanerWise Registry Cleaner is one of the most comprehensive cleaners in this list. Hence, it made it to the number 1 position.

Despite many options, the interface remains clear. Even the novice user will find this tool easy to use, since the program guides the user through each step upon running it for the first time.

Wise Registry Cleaner is available for Windows 98 through 7 and supports 32- and 64-bit.

While the tool may ask you for your eMail address and offer to download further software during installation, it’s all optional. Just be sure to uncheck the respective boxes.

When you run Wise Registry Cleaner for the first time, you are greeted with a window that provides a link to a quick start guide. The next notice offers to perform an automatic registry backup. You can choose to never see these windows again. And don’t worry, you can manually launch a full registry backup or restore a previous registry version anytime. Also the guide and further material is available through > Help.

Once you got through the initial welcome procedure, you are pointed to the start button. Entries are categorized as safe or not fully safe to fix. Using the respective buttons you can check the safe entries, all, none or invert all checks. All these options make the tool look complicated, but I find them quite convenient.

registry cleaner review

Through > Options you can edit settings and create a scheduled task to launch and auto run the tool.

If you would like to further enhance your computer’s performance, check out TanaG’s post for 7 Common Reasons Why Windows Can Get Unresponsive 7 Most Common Reasons Windows Gets Unresponsive 7 Most Common Reasons Windows Gets Unresponsive Sometimes, Windows freezes up and hangs without much of an explanation. Next time you suffer from an unresponsive system, review these seven common causes of Windows hangups. Read More and refer to Angelina’s article on Top 8 Programs That Can Make Your Computer Run Faster Top Programs That Can Make Your Computer Run Faster Top Programs That Can Make Your Computer Run Faster Your computer's performance will degrade over time. Don't let it become too slow to bear! These programs can help you keep your Windows system running nice and speedy. Read More . This material should point you into the right direction.

How often do you clean your registry and what tool do you use?

Image credits: tryout0

Leave a Reply

Your email address will not be published. Required fields are marked *

  1. Tamara
    November 17, 2016 at 8:59 pm

    Wise registry cleaner is not available for Windows 98, just tried it.

    • Tina Sieber
      November 18, 2016 at 10:46 am

      This article is from 2009. Wise Registry Cleaner moved on. You'll have trouble finding software that supports anything older than Windows XP. Please upgrade your operating system or computer.

      Besides, registry cleaners are overrated. Don't waste your time with them.

    July 21, 2016 at 5:04 pm


    . . . . . Wise Registry Cleaner actually worked(s) awesome ! ! ! I was scared (terrified) butt I allowed this program to open on my PC. Freekin blew me away !! Saved my _ _ s. In a moments time (less than a minute), my PC was(is) running like I can not even remember.
    Thank You for ALL your help . . . . . . . .

    • Tina Sieber
      July 21, 2016 at 5:13 pm

      Thanks for sharing, Robert. Must have been a super old computer. Meanwhile, we don't recommend using registry cleaners anymore.

  3. Anonymous
    July 7, 2016 at 12:06 am

    Auslogics Registry Cleaner is good, i just download it, makes my pc faster

  4. Anonymous
    June 30, 2016 at 5:02 am

    Eusing better and Advanced SystemCare and Registry Recycler are good too

    • Tina Sieber
      June 30, 2016 at 6:33 pm

      Thank you for suggesting alternative software, Chica!

  5. Anonymous
    June 30, 2016 at 4:55 am

    Glary Utilites sucks, is only good if you buy it, the free version sucks

    • Tina Sieber
      June 30, 2016 at 6:33 pm

      It was good when it came out. Keep in mind that this article is 7 years old. That's ancient in technology. :)

  6. Anonymous
    October 21, 2015 at 9:24 am

    If the speed of your computer is slackened greatly or even crashes while running, you may need a tool called uFlysoft Registry Cleaner to clean the junk files as well as to optimize your system.

  7. Anonymous
    July 31, 2015 at 4:07 am

    I like this post .but according to me there are several free registry cleaners available for Windows, but very few you may trust enough to clean your Windows Registry. I am using TunePRO360 Registry Cleaner. TunePRO360 Registry Cleaner is one such registry cleaner and repair tool, I just came across, that you may want to check out

  8. Lisa
    February 19, 2015 at 3:20 am

    I agree with the Ccleaner utility as it had successfully clean the corrupt registry. But last week I tried one more utility Ninja TuneUp which had also worked successfully to clean away the crap files.

  9. DDRAMbo
    December 28, 2014 at 6:58 am

    Most of these supposed 'geeks' that say 'registry cleaners are snake oil' are idiots who have done very little programming, if at all, so they hardly understand what the registry is or how important it is to keep it trimmed of unnecessary entries. Claiming that it doesn't need regular maintenance is a bit like saying that your browser will continue to perform fine over time as it collects thousands of unnecessary cookies. Add to this the fact that Windows itself has gotten larger, more unstable and buggier over the years, and you have a playground for performance sapping, spaghetti code.
    The registry is rarely described as the main compendium of software and hardware assets and info, a scratch pad for Windows and other programs, and a hell of a large file before it gets peppered with thousands of new pieces of data, hidden or not, encrypted or not, well beyond the huge number of useless entries of the 'default' type. I've been installing software for many years on every version since 98, back when Microsoft admitted that this was an issue by putting out their own cleaning utility, which they eventually stopped updating. Why should they continue to focus on functions that are better performed by third part apps, and besides, weren't they just admitting that their amazing Windows product was bloated crap? After all, I've seen Windows stumble over itself doubly so when dealing with Microsoft's own programs such as Office to a greater extent than third party software from much smaller groups of coders. Besides, it would have been better in the long run if Microsoft had re-written rather than 'ungraded' the general structure of Windows (even though that would have caused more compatibility issues) instead of simply 'patching' in sub-systems. Microsoft is mainly a marketing dynamo, not a hive of genius programmers.
    I'm not saying that everyone needs a registry cleaner or that all registry cleaners are alike. Certainly some registry cleaners miss a lot of what I would consider important entries, and some include more features than necessary, but no computer that I've had to work on that was riddled with performance issues had an active registry cleaner, or any other kind of cleaner for that matter, doing important 'preventive maintenance cleaning', 'house keeping chores' or whatever you want to call it, of useless files and registry entries. The need for such a program is directly related to the amount you use your computer, even if all you do is type letters, peruse the Internet and play multimedia.
    A closely related issue is the use of uninstallers that attempt to clean up after a program is removed. Although I agree with the use of these also, there needs to be more care taken in this case since they are more likely to remove too much. Neither area of software tools has been well tested and documented, so caution is advised.

  10. Lisa Wayne
    December 12, 2014 at 10:02 am

    Personally I like Ninja TuneUp - it creates a backup of removed registry items and lets you delete old restore points, i never had any issue with it.

  11. Best Registry Fix
    December 28, 2009 at 3:47 am

    Thanks for this post - I really like using these tools and really hope I can get the most out of my PC with them.

  12. Ivan
    November 26, 2009 at 12:24 pm

    Super post, Need to mark it on Digg

  13. Ben l Awesome Wallpapers
    November 24, 2009 at 12:36 pm

    Great article. I personally prefer CCleaner.

  14. AFemmeGeek
    November 24, 2009 at 1:22 am

    CCleaner is awesome.

  15. Albert
    November 24, 2009 at 12:16 am

    Great post Tina! I have used CCleaner and Eusing for years with great results. I still haven't found a good program for finding empty directories that are SAFE to delete. If you find one please write about it!

  16. raj
    November 23, 2009 at 3:27 pm

    Excellent topic. Thank-you.

  17. pthesis
    November 22, 2009 at 10:01 pm

    I've used both CCleaner and Glary Utilities without any problems.

    The one thing I would be careful with is the registry defrag apps. I forget which one I used once but it made my system unusable.

  18. Jack
    November 22, 2009 at 10:58 am

    Defrag your registry with NTREGOPT then Mark.
    If anyone doubts cleaning your registry has an affect, install then unistall Microsoft Office 2008. Then tell me what them 3000 + registry entries are still there for. I've been using Eusing for years, best IMHO.

  19. CGA
    November 22, 2009 at 10:19 am

    AML registry cleaner beats them all.

  20. Buffet
    November 22, 2009 at 8:40 am

    Why no mention of CM Diskcleaner? It's the only one, I've found, that does a comprehensive job, over time, but never deletes something it shouldn't.

  21. Kevin Reynolds
    November 22, 2009 at 1:06 pm

    I'm not saying this is better then anything else, just that this is what I do.

    Every night I turn my computer off. Every morning, when I turn it back on again these two programs run: A1 Click Ultra PC Cleaner and RegVac Registry Cleaner. Both are from Both are solid performers. Both get a lot of junk. The PC Cleaner get all kinds of left over crap files and RegVac get all kinds of junk entries. They keep my system pretty tight.

    That's it.


    • Tina
      November 22, 2009 at 4:06 pm

      Thank you for sharing your strategy, Kevin!

  22. JohnD
    November 22, 2009 at 4:15 am

    Ccleaner is fine. However, Auslogics Reg cleaner causes "stuttering" in Windows 7 using Nvidia drivers. It screws up the registry keys. Have not located which one yet, as I did a roll back. This is repeatable on 2 of my systems, so beware!

    • Tina
      November 22, 2009 at 6:10 am

      Thanks for the feedback JohnD!

      I'm on XP using an ATI graphics card, no issues here.

  23. Richard
    November 22, 2009 at 3:35 am

    Can anyone show me independent evidence that reg cleaners actually improve performance? Not the program makers sites - I mean independent auditable research from qualified experts! I've never seen any 'cos such research isn't out there! reg cleaners can crash your machine if you are not 200% certain of what you are doing ... don't use'em!!!

  24. uttaradhaka
    November 22, 2009 at 1:40 am

    Guys, you missed one. I use Glary Utilites. This utility is free and has everything you need. Plus, a registry cleaner AND a registry defragger. In my opinion this is one of the best freeware optimization utilities out there.

  25. gmonk
    November 21, 2009 at 8:55 pm

    Here we go again . . . registry cleaners *do not* improve performance. All they do is remove a couple entries your registry. So what's the effect, reducing the file size by a couple of kilobytes at the most.

    • Tina
      November 22, 2009 at 6:21 am


      invalid registry entries can lead to errors. In the majority they don't. If they do, however, system performance will suffer and a registry cleaner can fix these errors and as a result improve performance.

      So indeed, a registry cleaner is not an everyday tool to maintain system performance. It's a tool that should be used when system performance is bad and when errors accumulate.

    • Jeremy R
      January 20, 2015 at 5:13 pm

      They do not improve performance, they restore performance, over time your computer slows down and it will restore them to their former glory.

  26. Mark
    November 21, 2009 at 8:54 pm

    Here is a little secret. Registry cleaning actually lowers performance because it becomes fragmented. :O

    • Tina
      November 22, 2009 at 6:06 am


      done regularly, registry cleaning may indeed not have a positive effect.

      But when system performance is at a low to start with and if there are unexplainable errors, registry cleaning may do wonders.

    • Buffet
      November 22, 2009 at 8:42 am

      You need Diskeeper bro.

    • Jeremy R
      January 20, 2015 at 5:11 pm

      there are countless times I have ran into very slow computers, where all it needs is a good registry clean, the truth is every time you install, uninstall upgrade, shutdown reboot etc etc.. there are changes to your registry, left over crap etc, that just slows down your pc and with wise registry cleaner(my personal favorite) it WILL speed up your computer, come talk to me when you have used it on a old computer with over 3000 registry issues, and then tell me it does not make a difference.

  27. geeknik
    November 21, 2009 at 8:39 pm

    Glary Utilities beats ALL of these hands down. This list fails for not even mentioning it.

  28. Aibek
    November 21, 2009 at 8:31 pm

    I have been using Glary Utilities for the last week and love it. Highly recommended.

  29. Martin
    November 21, 2009 at 8:21 pm

    Thanks tina , what about shareware registry cleaners can we get your expert opinion on that i am using reginout

  30. Ali Qayyum
    November 22, 2009 at 12:36 am

    i used CCleaner but now i used RegistryLife -
    Clean and Optimization your Registry it is awesome freeware. and boost my pc
    speed. you can also try

  31. Ray
    November 21, 2009 at 6:53 pm

    Oh boy..... Once again you've done it Tina. Have you even tried Ccleaner? What do you mean you can't backup your registry?

    • Tina
      November 22, 2009 at 5:50 am


      as I explained to fosron, Ccleaner has no option to backup or restore the entire registry. It merely creates a backup of the changes you are going to make. That of course is sufficient to revert damages caused by a bad fix.

      You guys do have a valid point however, I should have explained this remark in more detail.

      • Ray
        November 24, 2009 at 1:05 pm

        OK. Fair enough :)

  32. fosron
    November 21, 2009 at 6:04 pm

    CCleaner does registry backup everytime you try to fix registry ;) Use it in first place, then talk about it :]

    • Tina
      November 22, 2009 at 5:46 am


      You are correct, Ccleaner does backup "changes made to the registry". But there is no option to backup or restore the entire registry.

      You can double click the "backup" Ccleaner made and the changes will be reverted. However, it remains a backup of only the changes made.

      Ccleaner actually is the tool I'm using.

      • fosron
        November 22, 2009 at 10:07 am

        oh, ok, misunderstandce on my side :] Sorry!

        • Buffet
          November 22, 2009 at 10:16 am

          There's no such word as misunderstandce.