We tested the best PC cleaner software currently available to find which one would clean Windows 10, 8, and 7. Using our test laptops and desktops, here's the best at cleaning unwanted junk files - Removed the data permanently.
The Top PC Cleaner of 2021
A well-used PC will build junk and eventually slow down. The best PC cleaning software below will bring slow sluggish performance back to snappy speed again.
If your PC is slowing down, it's only going to get worse. The winner was the only one to clean 100% of the junk data, defunct, and hidden entries for extreme privacy.
Best of all, after the cleaning, it was able to continually sweep away privacy-invading junk automatically, leaving our systems 100% perfectly clean every single time we booted up.
Here's the leading PC cleaner after our recent 2021 software testing. It gave brilliant results compared to the free junkware alternatives that are risky to use. If you demand the privacy one should expect by default - but not currently available in this world we live in, get WiseCare 365.
If you're concerned about privacy, it will eliminate all traces of web browser history and even image data duplicates in locked folders.
Many others we tried left easily accessible so-called "hidden" backup data behind with the complete web history and image data still intact.
If you want to avoid those blushing moments when someone stumbles across your "private" web history, only WC 365 Pro gave a comprehensive cleaning.
Best PC Cleaner 2021
1. WiseCare 365 Pro
Recommended PC Cleaner (for Perfect Cleaning, Privacy Protection, and Speed)
Windows 10, 8, 7.
99% While the interface looks a little bland, the powerful cleaning and optimization routines are easily accessed. There's a mountain of manual settings to play with for anyone who wants to dig deep into the program. the rest of us will be content simply clicking the "All-in-one" tools to automatically perform the most comprehensive PC cleaning and optimization currently available.
Also has the best registry cleaner of all of the programs we tested. That's important because you don't want an amateur program messing with your core registry settings. Cleans defunct data entries that may secretly store usage information and defrags the registry file size for optimum stability and speed.
The Privacy Protector included within WC 365 Pro starts with a thorough cleaning of Internet history.
The results were spectacular, as it cleaned all traces of our Internet tracks within seconds.
Considering others left behind many telltale fragments, it was great to see the 100% removal.
It gets better for those of us who want things easy and automatic. Once you've done the initial cleaning and optimizing, you can set WiseCare 365 Pro to keep your PC in perfect running order. The Pro versions slowdown and security protection keeps problems from developing. If you want the best PC cleaner for a perfectly running computer from now until the day your PC is retired, WiseCare 365 Pro is easily the best choice for you.
"Best PC cleaning for less than many other bloated cleaners that are ineffective. Going beyond DoD standards that make data irrecoverable - this is true privacy."
The slowdown protection will eliminate bottlenecks, viruses, and anything else that will interfere with your system's responsiveness. WiseCare 365 Pro is far more than a junk file and privacy cleaner, it's an all-in-one solution to keep your system speedy, responsive, clean, and secure. Next to Windows itself, this is the best software you will install on your beloved desktop, notebook, tablet, or whatever Windows computer you're rocking.
Cleans all files types that many do not. We used the "Recommended" selection shown in the image to completely remove hidden files. To say this is an important privacy feature is an understatement as many sneaky programs hide usage data within these files. Be careful though, if you choose to "Select All" you may remove important files that some of your installed programs need to work properly.
Recommendation: All Windows 10, 8, and 7 computer users who want the best cleaning, privacy, and performance possible. If you want your PC to be clean, and never bark out your private information to a surveillanced world, get WiseCare 365 Pro.
"WC 365 Pro proved itself in every PC / Internet cleaning task we threw at it. Simply the best PC cleaning with the safest solution available to lock down your privacy."
2. Glary Utilities Pro
System utility tool for cleaning junk files and performing maintenance on your PC.
92% Glary Utilities has a more hands-on approach compared to many of the other cleaning downloads we tried. It throws a fairly complicated opening screen at you that takes a little time to digest.
Once you take the time to see what it offers, you soon realize, this program expects more out of you than many others. You'll have to approach every change you make with caution and I would suggest only using this cleaner if you have serious PC problems that need repair. Otherwise, you may want to choose a more user-friendly cleaning app on our list.
Recommendation: Since it lacks many optimization functions of the above cleaners, I would only consider Glary utilities if you want an in-depth repair tool for a problem-filled PC. Otherwise, take the speed gains and perfect cleaning from the top program in our list.
3. Comodo PC Tuneup
A quick clean to your PC. Finds and removes duplicate files.
82% Comodo PC Tuneup has a force delete function to get rid of hard to delete files. While that's a nice feature, it still doesn't make up for the lack of cleaning and optimization of this tool.
More of a Windows problem solver, this program can clean your system of clutter, just not as comprehensively as the others in our list.
Recommended for: If you want a simple utility program to help fix and find problems, it does a good job. I just wouldn't count on it for a full cleaning or making my PC much faster.
4. Advanced System Optimizer
Cleans out duplicate files from your computer. Also includes disk cleaning.
81% Advanced System Optimizer has a wide array of cleaning functions, but none are the best in each category. The optimization benefits are limited with a regular maintenance utility included. No Internet optimizer included.
The surprising lack of an Internet optimization module was sorely missed considering everything we do today relies on our Internet connection in one way or another.
Recommendation: While still a fair optimizing program, you can do a lot better at a lower cost higher up our list.
5. CCleaner Professional
An older cleaning app with a focus on file deletion without much optimization.
81% As a file remover, CCleaner performs fairly well. However the optimization benefits are very weak compared to a full PC optimization and cleaning solution. Will clean your registry with a basic pass, but does not go deep.
Years ago, I continued using CCleaner on an old laptop, because the better optimizer software I bought for my gaming desktop would only allow a single use on one PC. However, now most software offers at least 3 licenses. So my usage for CCleaner has faded over time. i much prefer the advanced optimization included with the others.
Recommended for: Those who want a basic junk file and registry cleaning. It's a good app, but don't expect the deeper and more advanced features of the more robust software.
You could spend hours upon hours manually going through all of your data and files - but you will never be able to do it in your lifetime. There are thousands of junk files put on every PC from the original installation and the only way to clear out all of that junk is using a software solution.
Add in all of the installs and uninstalls you have performed since getting your PC and the junk build-up grows significantly. of course, your Internet files also build into a mass of data that can slow your Internet speed after just a few months - and are a great risk to your privacy as much of your web history is leaked to web sites' internal data-bases as you surf. The best PC cleaner, WC 365 Pro eliminated that risk in minutes.
After looking at all of the junk files found on my latest Windows 10 system, I was shocked at the difference in system speed after cleaning with WC 365 Pro. And that was only the cleaning, after the full optimization, the speed really took off. The difference between an average PC cleaner and the full optimization and deep cleaning of WC 365 Pro is like night and day. It gave us a perfectly private PC with the best speed results in all of our tests.
You rely on your Windows computer to perform flawlessly, otherwise your computing time can be frustrating. By cleaning and optimizing your PC to be the best it can be, you will experience a much faster and more responsive system. You'll have faster bootups and improved responsiveness as every program starts and closes quicker.
Since all computers are online continuously, it's important to have the fastest and most resilient connection possible. However, not many PC cleaners will optimize your Internet settings. Luckily, WC 365, will give you the best Internet optimization available. Faster web surfing, emailing, video streaming, and anything else you do online will be quick and more responsive.
We hope you enjoyed our article on cleaning your PC through a software solution. It took more than a few days to put this all together, and I hope it helps you find the best PC cleaner software for your computer. Thanks for reading.
SpeedupNew (a collaborative effort by our team)
All of our writers have over a decade of experience reviewing software, tweaking, and just flat out enjoying their computers. We treasure our PC's just like you do. We're here to help you get the most out of your computer.