Best Free Registry Cleaner

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The registry is what keeps your computer running; it tells the computer what to do when certain events happen. However, as you use your computer, a lot of unwanted and unnecessary information is written into the registry, and this usually occurs because you've installed and uninstalled programs or updated versions of existing programs. This gradual accumulation of unneeded or incorrect information will, over time, slow the speed of your computer.

A registry cleaner tries to get rid of this unwanted data and restore your PC to full speed. The problem is that the cleaning process is less than perfect. In particular, there is always a small risk that the registry cleaner may incorrectly remove data that is actually needed. In the worst case scenario, your PC may become unusable as a result.

That's why it's absolutely essential that you backup your registry before using a registry cleaner. For most users the easiest way to do this is to create a system checkpoint.  An even better way is to use a drive-imaging program to create a snapshot of Windows, which you can use for system recovery if needed. As an added layer of protection, that may actually be more effective than System Restore, consider using the excellent ERUNT utility.

This ever-present risk of problems is why the "best" registry cleaner is the one that causes the fewest problems, rather than the one that finds the greatest number of registry errors.

Thus it is evident, a registry cleaner is - if at all - a tool reserved for the experienced user. The inexperienced may be assured that since the introduction of Windows XP, registry cleaning is no longer a crucial issue for the stability, security and performance of your system. Don't mess around with it!


WRCFWise Registry Cleaner Free  is the recommended software in this category.  Fully featured, and less likely to cause problems due to the way results are displayed.






EusingEusing Free Registry Cleaner is a powerful cleaner with a strong user-base.





Quick Selection Guide

Wise Registry Cleaner Free
Gizmo's Freeware award as the best product in its class!

Runs as a stand-alone program on a user's computer
Full registry backup and registry defrag included. There is also a portable version
Clean with one click option can cause problems
2.07 MB
32 bit but 64 bit compatible
Unrestricted freeware
A portable version of this product is available from the developer.
Windows 98 to Windows 7

Other languages avaiable

Eusing Free Registry Cleaner
Runs as a stand-alone program on a user's computer
Good track record. Support for older systems
Could have more features
959 KB
Unrestricted freeware
There is no portable version of this product available.
Windows 95 to Windows 7

Other languages available


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Average: 3.4 (196 votes)
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by Bernard (not verified) on 9. October 2010 - 15:45  (59312)

Why isn't Auslogics Free Registry Cleaner in the top free reg cleaners?

by Jason H. (not verified) on 2. October 2010 - 19:52  (58920)

Is there a program that you are aware that can fix registry problems from bootup without the xp repair cd or without a restore point?

by clickbank (not verified) on 29. September 2010 - 21:49  (58672)

Cleaning registry sucks because there so many scam companys out there you dont know who to trust.

by GreenArrow (not verified) on 2. October 2010 - 19:20  (58918)

You are right that it's a common utility -- just like screensavers -- used for malware distribution.

But you can usually tell the good ones by uploading the installer to a multi-engine scanner (VirusTotal/Jotti), scanning locally (Prevx, Avira/Avast/etc., Comodo), and looking at site ratings (WOT, HostMan Restrictions, ClearCloud). Also, SoftPedia and other popular download sites (CNET, FileHippo, MajorGeeks, etc.) test their downloads for malware.

The ones listed in the review above are clean.

by Adrian7 (not verified) on 14. September 2010 - 19:45  (57840)

I'm not sure if this has anything to do with anything, but I used Ccleaner and just removed everything i could and it removed about 15gig of crap, is that normal?

by GreenArrow (not verified) on 14. September 2010 - 20:11  (57841)

It is under a couple circumstances: For those who never empty their recycling bin, and those who rarely use a cleaner. CCleaner is actually somewhat limited in what it finds; for example, additional files are usually found with Microsoft's built-in cleaner and, say, the cleaner in Revo Uninstaller.

by xsallin (not verified) on 11. September 2010 - 11:01  (57641)

Did this in a hurry and I see some mistakes as English is not my native language and using firefox dictionary as a correcting tool can lead to acronyms or poor interpretation. :)

... not smart enough to clean "all (not any)" garbage from registry.

....leftovers from software "removed (not removers - as in the uninstaller)" (even with Revo Uninstaller) many months ago... so I end up cleaning it "MOSTLY FOR ESTHETICS", cause obviously few software remains can't affect the system in any way.

And so on, you get the message - just follow the recommendation for "REAL RESULTS". Point "2" from my last post surprised many in terms of "how effective it can be" yet very few people are aware of that.

by xsallin (not verified) on 11. September 2010 - 9:54  (57637)

The differences are minor, mostly psychological as in "Placebo effect". It's true - garbage still remains after software uninstall and Revo Uninstaller helps some times, but I didn't find any registry cleaner capable of cleaning that part and "that's cause they're passive tools" and usually work by a set of predefined settings, they're not smart enough to clean any garbage from registry.

On the other hand, an active registry manager, one that could monitor all changes - well, in theory that could do the job... But the things is, a tool like that would prove to be more hassle than the registry garbage which doesn't really affect system performance. As far as I'm concern, a general cleaner like CCleaner should be more than enough.

Yet I have to admit - back in the old days they really fooled me with this... :) and since there was no registry cleaner capable of cleaning all junk, "I learned to do that manually". On rare occasions I still do some manual cleaning, yet now it's easier to do with RegScanner - BUT KEEP THIS IN MIND "IT DIDN'T HELP ME IN ANY WAY AND DEFINITELY DOESN'T IMPROVE PERFORMANCE" - I end up doing this accidentally, when going in to registry to tweak a s soft and find some leftovers from software removers (even with Revo Uninstaller) many months ago... so I end up cleaning it "MOSTLY FOR ESTHETICS", cause obviously

Then what those help, you might ask...

1.Making Windows partition large enough so there's always enough free space on it... and "by enough" I don't mean 10 or 100 mb, more like 10 GB. Keeping a tool like CCleaner around can always be handy. ;)

2.At about 4 months clean the "Leftovers from deleted files" - same files you could partially recover from an "accidental delete" - yet mostly it's intentional and involves plenty of extra junk. you could use "Eraser 6.07" for that (it's a free open source tool)... But this takes some time - yet the results are visible, somehow similar with those from a defragmentation.

3.And since I mentioned about defragmentation, that helps to - auslogic disk defrag is pretty good at this and also capable of optimizing your disk space.

4.Keep your system Virus/Spyware/Add-aware/Trojan free.

When it comes to Windows, the above points should keep it running smooth as it did in the 1'st day after installation.

by MidnightCowboy on 11. September 2010 - 10:16  (57638)

You make some very good points. This PC sees a massive amount of traffic in and out, CCleaner is all I ever use and I'm not growing old waiting for stuff to open :)

by DarkVision (not verified) on 18. August 2010 - 21:05  (56324)

Any recommendation for Little Registry Cleaner?

by laolitan on 19. August 2010 - 9:38  (56342)

I've had a look at "Little Registry Cleaner".
The test PC was quite clean at the time, so it only picked up a few empty keys. Most (if not all) would have been recreated at the next reboot if removed.
I'll be loading another image in the not too distant future (one that contains a number of leftovers etc)and will then compare it to WRC Free.

LRC is open source, for this reason it deserves a mention IMO(subject to testing)!

by alerossi82 (not verified) on 14. August 2010 - 15:23  (56003)

When using the Internet, sometimes my laptop (Fujitsu/Siemes Amilo Pi 2540)freezes and the following error message shows up on a blue screen:

Hardware Malfunction
Call Your Hardware Vendor for Support
NMI Parity Check / Memory Parity Error
The System Is Halted

I run a system diagnostics using different softwares but everything seems to be ok.

What kind of problem could it be? Do you think the Wise Registry Cleaner Free can help me, or you have better software to recommend me?

by MidnightCowboy on 14. August 2010 - 16:19  (56010)

Download this ISO, burn it to a disk and then boot with it to run the test.

I had a problem recently where no AV would install (or an existing one update) and some other programs refused to launch. Also freezing during surfing. Turned out one of my two memory cards had developed a fault. With a laptop it might not be possible to replace the memory yourself, but it will at least tell you if the fault is there.

by Anupam on 14. August 2010 - 15:43  (56006)

The error indicates that one of the memory modules, that is, the RAM is defective. You will have to replace it. I will suggest that you take it to a repair shop where some qualified personnel can look at it, and replace the faulty module.

by Kalane (not verified) on 8. August 2010 - 18:49  (55642)

I'm having loads of errors to the point of my system not being able to open any files except through steam, I just want a basic fix, not performance enhancement, anyone have any recommendations/know if wise is what I need?

by Joeqaz741 (not verified) on 11. August 2010 - 4:31  (55774)

I have been using many differen't programs throughout the last 7 years.

Your problem could be that your Hard-drive is Failing, or a simple thing like a bad virus. This registry cleaner is not the answer to your problem.

If your Hard-drive is failing you'll here that it makes a weird noise, such as a "clunk", or a "ding", anything from the normal "spinning" sound can point towards a hard drive failure.

Lets hope that its just a virus. I would recommend downloading the programs that i have listed below.

Microsoft Security Essentials (Anti-Virus, The best, Free)
MalwareBytes Anti-Malware (Very good On-Demand Malware Scanner, Free)

Download Links:

I really hope this helps


by laolitan on 8. August 2010 - 20:25  (55651)

A Reg cleaner (Wise for example) may help with some/all of your problems, but nothing is ever guarenteed!
Have you performed the usual system maintainance tasks (temp file cleaning, defrag etc) ?
Are all your files backed up? If the answer is "Yes" and you have the means to reinstall your OS, it could be worth a try (Reg cleaning can make matters worse tho!)
Malware can also cause the types of problem you describe.

by rfrees (not verified) on 3. August 2010 - 13:51  (55387)

Wise Registry Cleaner version 5.51 has now been released

by laolitan on 3. August 2010 - 23:14  (55411)

Thanks, I'm also going to change the picture for one with the new UI.
I see that "Clean with 1 click" is now optional (a step in the right direction IMO!)

by Mesen (not verified) on 20. July 2010 - 11:55  (54576)

One of the best...

by wig (not verified) on 14. July 2010 - 18:42  (54285)

Is Easy Cleaner too old, and should I replace it. Win XP

by Anonymous64 (not verified) on 19. July 2010 - 8:23  (54501)

Old enough to ditch it.

by WizWaz on 4. July 2010 - 0:26  (53709)

Be very careful with registry cleaners/defrag.Its not necessary to use them at all.

by PHOENIX RIZING on 8. August 2010 - 6:30  (55614)

Re WizWaz's 07/04/10 comment:

OS: Windows XP Pro for many years; currently maintain 4-5 computers running XP Pro.

It is true that it is not necessary on a frequent basis. Most people I know do not do it at all themselves.

If you feel you must do it: back up your system and make a copy of the registry.

The PCs that I maintain do run better after a "tune-up."

It is not a job for a novice; better to pay someone or ask a knowledgeable friend.

by McBlob (not verified) on 12. July 2010 - 15:55  (54151)

Vit Registry Fix is the best

by MidnightCowboy on 12. July 2010 - 16:42  (54153)


by McBlob (not verified) on 13. July 2010 - 14:28  (54201)

Its thorough and safe and never caused any problems. Actually I think now it has annoying nag window. But I bought the pro version that cost couple of quid for lifetime.

by MidnightCowboy on 13. July 2010 - 16:04  (54209)

Well I'm pleased you are happy with your purchase although the information given about being thorough and safe tells us nothing about what this software actually does. You could apply this statement just as easily to a whole bunch of similar programs which don't force you to "upgrade" to get extra features.

by McBlob (not verified) on 13. July 2010 - 22:02  (54223)

I just giving you my opinion based on past experience with other reg cleaners. I have tried Regseeker, Comodo, Wise, Eusing, Powertools Lite, jv16, Easycleaner, Argente, CM Diskcleaner. Most of these have caused problems. Vit has caused none.

by MidnightCowboy on 14. July 2010 - 8:14  (54247)

Thank you for responding. What I was trying to find out is some exact details so that other people visiting this page can make an objective comparison. Saying that some programs caused problems but another didn't means little unless we know what the problems were and what actions were taken with the program to cause them.

During my time servicing paying customers, none of them were advised to ever use a registry cleaner, and none of those who took this advice ever complained that their computer was slow because of it. Of those who chose to believe what they read at various sites on the internet, all had issues after using a registry cleaner some of which required a re-install of Windows. The biggest cause of this was RegSeeker although the earlier versions of Comodo were not far behind. Advanced System Care when it first changed from Advanced Windows Care was also capable of making your system unusable. The only two which I have found usable with relative safety for folks who don't understand why they need to but can't resist pushing buttons are CCleaner and EasyCleaner. As EasyCleaner hasn't been updated for years, CCleaner would be my preferred choice.

Being the vital component of Windows, Microsoft produce good information about the registry and I would urge anyone contemplating using one of these tools to read it.

There's another good one here:

If after reading this the contents means very little, I would still advise against using any of these tools.

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