Best Free PC Clenaner and Optimizer Apps for Windows

13 Best Free PC Cleaner and Optimizer Apps for Windows in 2021

Cleaning a PC from the inside and cleaning it from the outside are two different things. Cleaning can be very easy if you use the best free PC cleaner for your system. A PC optimizer can do a lot of things that you will not be able to do manually. It is inevitable that the performance of the PC remains the same as that of a new one. With time, a lot of files, applications, and other such items get accumulated on the PC to affect its performance. As a result, we suffer from speed and storage issues.

However, the best PC optimizer is one single entity that can take care of all such issues and give you a PC that is faster, more managed, and has only the important items. There will not be any additional clutter that you do not need. To know more about such applications or the best pc cleaner software for Windows 10, continue reading this piece of write-up.

Editor’s Choice – Best Windows Optimizer

  • clean-my-pc-logo

    Clean My PC

    1. Removes unwanted extensions.

    2. Helps in boosting the PC’s performance.

    3. A great tool to get security.

    Most Recommended

  • ccleaner-logo


    1. Scheduled cleaning and defragmentation.

    2. Deep cleanse and speed up your computer.

    3. Simple one-click features.


  • advanced-system-care-free-logo

    Advanced SystemCare Free

    1. Accelerates internet speed.

    2. It comes with firewall protection.

    3. Makes the best use of RAM by freeing it up.


List of Best PC Cleaner Software for Windows in 2021 (Free and Paid)

1. CleanMyPC – Best PC Cleaner

clean my pc - best pc cleaner

If you are looking for a maintenance tool for your system, that can help run your PC smooth and fast, then you should definitely check out this best Windows optimizer. You can expect a complete cleanup of your PC with this application. It runs a scan on your system to find and eliminate junk and other such stuff from your system. This can be taken as a free PC optimizer if you are using its limited period trial version. Its paid version is adorned with lots of intuitive features. Also, its Uninstaller is super powerful. It double cleanses your system of all the initial applications as well as the traces of it.



  • It comes with a shredder that permanently deleted files or folders without leaving any hints of it.
  • Its features are effective and enhance the performance of your system.
  • This PC cleaner software is easy to use, has a powerful optimizer, and comes with an intuitive interface.
  • You can get a quick response time for your PC by implementing its features.


  • Does not occupy PC’s resources.
  • Improves process time by fixing the registry.


  • Does not have a backup or restore features.
  • Uninstalling is not absolutely safe.

Final Verdict

You can use this app for easy diagnosis and fixing of your system but its uninstaller may not always tell you what kind of program or app or software it is removing.


2. CCleaner

ccleaner leading windows cleaner software

Is your computer unorganized or is your registry really clean? Well, if you have this best free PC cleaner, you do not have to worry about all such issues. CCleaner is an application designed by the renowned Piriform and it has been in the market for so long.

The best feature of this particular PC cleaner is the ability for locating and removing all different kinds of duplicate and similar files on the user’s PC. Some other features offered by this best PC cleaner software are deep junk cleaning, software uninstallation, registry cleaning, and a lot more.

The interface of CCleaner is designed in such a way that users do not find any sort of difficulty in locating any of the features or tools inbuilt in the software.


  • This best PC optimizer is easy to use, interactive interface, reliable, and all-in-one utility.
  • Quickly cleans up or frees disk space and comes with system optimization tools.
  • Windows 10 optimizer offers reliable protection features.
  • It is workable when it comes to increasing the speed of your system and internet browsing speed.


  • Great features clear interface.
  • Real-time monitoring.


  • Annoying ads on the free version.
  • Some of its permissions may gather data for third-party.

Final Verdict

CCleaner is a powerful and effective PC cleaner for Windows 10. It is a good option to get one app that is loaded with lots of PC enhancing tools.


3. Advanced SystemCare Free

Advanced System Care - Free PC Cleaner

This is the tool you need if you are struggling with slow speed and low storage space on your PC. This is the best free PC cleaner that will work to clean, speed up, secure, and optimize your PC by implementing its mechanism. It is highly suitable to clean malware and registry on your system. It also comes with an uninstaller that can help you remove complete leftovers of so many applications that have been adversely affecting the performance of your system. It is quick in its operation hence it will save your time. You can use this free PC optimizer daily to keep your system’s health in check.


  • It offers robust security features to protect you from security vulnerabilities.
  • Quick and workable mechanism to free up storage and speed up the system.
  • It amplifies your internet browsing and downloading speed.
  • It keeps software health in check to eliminate high risks on your system.


  • Most of its features are one-click.
  • It has backup and restore features.


  • Lots of ads on the free version.
  • Ineffective uninstallation.

Final Verdict

If you wish to free up disk space for free then Advanced SystemCare Free is a great app but if you want complete optimization of your system, you can think about getting its paid version.


4. Iolo System Mechanic

Iolo System Mechanic

If you are looking forward to giving advanced and all-round PC tuneup to your system, you cannot miss out on this Windows 10 optimizer. It is highly recommended to resolve stability issues that may disturb the functioning of your system. Though it is one of the best free PC cleaners, you will get all the features in the premium version. Iolo System Mechanic comes with powerful features for all the Windows versions but there are some special and high-end features to reduce internet bandwidth and increase protection on Windows 10. You can also recover deleted files using this best PC optimizer.

Availability- Windows 10, Windows 8, Windows 7, Windows Vista, and XP



  • Comprehensive performance improvement of the PC.
  • This best pc cleaner software for Windows 10 works well to protect your computer from malware.
  • It accelerates the responsive rate of your system by increasing the speed.
  • Cleans all the unwanted stuff from the depths of your system’s storage. 


  • Comprehensive cleaning and performance enhancement.
  • Backup Windows 10 registry.


  • No antimalware in the free version.
  • Some of its features are complex.

Final Verdict

There are many helpful tools in this application that can help you free disk space. It can optimize your PC and enhance its performance using its advanced features.

5. Ashampoo WinOptimizer

Ashampoo Windows Optimizer

A fantastic optimizer for your Windows is this one. It is the best free PC cleaner that can help you organize your data in the most intuitive way. It comes with a feature that breaks down or splits the large files making them fit into smaller storage spaces. Furthermore, there are many other features associated with this free PC optimizer with which you can secure and customize your system. The tools that are loaded on Iolo System MechanicAshampoo WinOptimizer can keep a check on the overall performance of your system including the performance of the processor and HDD.


  • It has more than 30 modules to keep your system in check.
  • It comes with a task scheduler to make you work with ease.
  • This best pc cleaner software for Windows 10 has features to scan hidden data streams.
  • Permanently eliminates unwanted or sensitive files making them irrecoverable.


  • One-click and quick optimization.
  • Easy and nominal pricing scheme.


  • Limited features in the free version.
  • Annoying emails.

Final Verdict

It is a utility that gives you an effective PC tuneup for a price you can afford. This is a great PC optimizer with lots of helpful features.

6. Easy PC optimizer by WebMinds

Easy Pc Optimizer - Clean and Optimizer Your Windows PC

A slow computer can be really annoying and it is impossible to spend lots of money on it multiple times. The best bet is to get the best PC optimizer for your Windows. Easy PC optimizer is one such tool that will help you combat multiple issues on your PC making it fast and smooth. You can put the maintenance of your system in check with this application so that your system is error-free. To get maximum productivity out of your system, it is recommended you use this PC optimizer once a day. It is one of the best free PC cleaner and repair tools that come with lots of Windows tweaking tools.


  • It offers you internet optimization features.
  • It can speed up your system in just one click.
  • You can easily recover disk space and fix system freezing or crashing using this best free PC cleaner.
  • You can customize your PC and control privacy settings.


  • Easy to use.
  • Powerful optimization and speed-up tools.


  • Sometimes it scans at a slow pace.

Final Verdict

Easy PC Optimizer is a good free PC optimizer that you can use to clean and speed up your slow computer. Furthermore, it can even fix some of the errors on your PC.

7. Winzip System Utilities Suite

Winzip System Utilities Suite - Renowned Pc Optimizer Software

If you are struggling with storage issues then this is the application you can count on. It offers features with which you can compress a large file and divide it into smaller storage segments. Winzip will help you clear all the junk and clutter that has been hogging up the space and speed of your system. This solution is trusted by a lot of users when it comes to fixing poor performance. You can use this diagnostic tool for enhancing and boosting your PC’s performance. It is a free PC cleaner and repair tool if you use its free version.


  • Its features help you compress large files and adjust them in smaller disk space.
  • User-friendly and comprehensive tool to speed upland clean your system.
  • It comes with a broad range of optimizing tools.
  • You can schedule cleaning and maintenance using this Windows optimizer.


  • Lots of helpful tools.
  • It also scans and identifies outdated drivers.


  • A little bit high priced.
  • Not optimized for Windows 8.

Final Verdict

This is a good PC cleaner tool for Windows. It can help you fix the issues of accumulated junk on your PC, organize storage, and comes with other easy features.

8. Restoro 

restoro complete free pc cleaner software

One thing that you need for your PC is Restoro. It is one of the best free computer cleaners you will get for an overall cleanup of your computer. It works avidly to identify unsafe websites and protects your PC from malware vulnerabilities. If the files on your Windows system are damaged, this PC optimizer can implement its technology to fix them. Not only this but if your system has stability issues, you can deploy Restoro to take care of the same.


  • Analyses your PC in-depth and fixes the issues.
  • It comes with powerful Windows Registry optimizing features.
  • You can also work for OS restoration with this pc optimization software.
  • Complete protection from cyber threats and vulnerabilities.


  • Comes at an affordable price.
  • Effectively replace missing or damaged files.


  • Average or sluggish customer support.
  • Limited customization.

Final Verdict

Restoro is a great Windows optimizer that you can use. It offers fantastic virus damage repair and virus protection. It can also help you by offering free manual repair. Its features are a good deal for the price it offers.

9. Razer Cortex – Best Game and System Booster

Razer Cortex - Best Game and System Booster

If you are looking forward to getting something that can defragment your disk space, then this app is your choice. It can work to clean your PC from unnecessary items that may be affecting the operating speed of your system. However, Razer Cortex is not exclusively a PC cleaner tool for Windows. Yes, it was meant to help gamers to offer them smooth gameplay by halting processes that may be affecting a game’s performance. It may not be the best free PC optimizer but it definitely is a game-enhancing tool.


  • Frees up RAM by stopping non-necessary activities.
  • Scans for broken registry entries.
  • It can also be utilized as a hardware configuration tool.
  • Game Booster features make it an ideal utility for gamers.


  • It is updated regularly to give maximum performance on your system.
  • It enhances the quality of games.


  • Some unwanted features.

Final Verdict

Undoubtedly this is a free PC optimizer that comes with basic system cleaning features but it is a fantastic app for gamers. It is exclusively designed to give high performance in gaming PCs.

10. Outbyte PC Repair

Outbyte PC Repair - Clean and Optimize Your Windows PC

PC Repair is simply a RAM cleaner for PC. It can be used to optimize and enhance the overall performance of your PC keeping it safe from intruders. This PC optimizer can give you error reports and work to fix them. However, its free version has only scanning options. If you want to explore the unlimited benefits of this app, go for its paid version. You just have to get this tool and forget about all the issues that may corrupt or slow down your computer.


  • It comes with features to optimize battery usage.
  • Comprehensive junk scanning and cleaning.
  • Complete registry maintenance including registry cleaning, fixing errors, and defragmentation.
  • PUP and malware detector.


  • Can repair or fix minor as well as major PC problems.
  • It can improve battery life.


  • It does not offer scheduled scanning.
  • Its prices and plans are expensive than the competitors.

Final Verdict 

This app is one of the best computer cleaners you can get to improve the overall performance of your system. However, it is a bit expensive but its features are excellent.

11. AVG PC TuneUp

avg pc tuneup

As its name suggests, AVG PC TuneUp is the best Windows optimizer you can use to find and fix errors. This is a utility that can maintain your system without any hassle. It comes with helpful features that can make your slow computer run faster. It comes with comprehensive driver update software to maintain the overall well-being of your system. If you use its trial version, it can be taken as the best free PC cleaner. However, the trial version can be utilized for 60 days. Overall, this is a fantastic tool to clean up your computer, free up hard drive space, and do complete maintenance of your system.


  • It comes with a smart uninstaller that is cloud-based.
  • You can even manage your device remotely.
  • Free license for Android and Mac cleaning apps.
  • You can install it on as many devices as you want.


  • Its features include backup and restore options.
  • Automatic and frequent card updates.


  • The free version does not allow fixing errors.

Final Verdict

AVG PC TuneUp is the best Windows cleaner you can get for your system. There are many benefits of using this utility tool.

12. Defencebyte

defencebyte system cleaner and optimizer software

Defencebyte is an online registry cleaner and PC optimizer that works to create a PC that works fast and gives high performance. It detects and removes corrupt entries to maintain the overall health of the system. By using this application, you can delete unwanted software, files, or folders. It is one of the best pc cleaner software for Windows 10. Its Uninstaller Manager is a very efficient tool and it can eradicate all the traces of items that are already deleted or the ones that are to be deleted.


  • It can speed up internet browsing speed.
  • It is easy to set up and easy to use.
  • It works well to block unwanted URLs to protect your PC from intruders on the internet.
  • It can erase uninstalled entries and invalid paths.


  • It allows scheduled scanning.
  • It comes with backup and restore options.


  • It is expensive than the competitors.

Final Verdict

It is a great tool to manage all the resources on your system. It helps clean the system of everything that is unnecessary. This way, your computer is able to perform quickly.

 13. Microsoft Total PC Cleaner

Total Pc Cleaner - Windows Optimizer Software

Microsoft Total PC Cleaner is the best free PC cleaner you can get for your system. It is a basic tool and works well to clean your system of multiple things that may have been slowing down your PC or affecting its performance adversely. By cleaning all such junk files, cache files, and more, you can give a considerable tuneup to your system. This will eventually help you get a PC with enhanced performance. It is undoubtedly one of the best free computer cleaners.


  • This PC cleaner software can protect your PC from malware, virus, and other such entities.
  • It can find and delete unused large files from your PC.
  • It deep cleanses almost all kinds of junk files from your system.
  • This PC cleaner for Windows 10 can remove duplicate files, ads, large files, and browser cache.


  • Best free PC cleaner software.
  • It cleans the whole computer.


  • A few helpful features are missing.

Final Verdict

If you want to clean the system cache, old large files, browser cache, and other such entities then this is one of the best free PC optimizers. It does not come with many fancy features but it has sufficient features to clean your PC.


What is PC Cleaner?

A tool or an application that clears unnecessary items from your PC is a PC Cleaner. It finds out and removes the clutter that constraints the performance of your system. Some of the best free PC cleaners aim to find and remove junk files or unwanted files. These files eat up the storage of your system and make it function at a slower speed.

Is PC Cleaner Legit?

A PC Cleaner can be a legit application if you download it from an authentic source. There are many other apps available that impose as PC cleaners but are spyware or other programs that aim to do no good to your PC. the best way to stay safe is using authentic applications by downloading them from trustable sources and by reading multiple reviews. The list of best Windows optimizers given above is absolutely genuine.

Which is the best PC Cleaner for Windows 10?

Some of the best pc cleaner software for Windows 10 are given below.

  • Iolo System Mechanic
  • Ashampoo WinOptimizer

How can I optimize and Clean my Computer?

To optimize and clean your computer, it is imperative that you remove all the clutter from it. This may include junk files, temporary or residual files, unwanted applications and other such data. The best way to optimize and clean your PC is by using the best free PC cleaner.

Which factors should be considered while choosing the software to clean PC?

Following should be some of the basic points that you must ponder before getting a PC optimizer. Primarily, it should be

  • Easy to use.
  • Affordable.
  • Good performance and visible results.
  • Interactive interface.
  • Have good reviews.

Which are the Best PC Cleaner Software?

Some of the best PC optimizers or best PC Cleaner Software are given below.

  • CCleaner
  • AVG PC TuneUp
  • CleanMyPC

What happens when you don’t clean your computer?

When you don’t clean your PC well, you may find a number of unusual and irritating things. The storage space shrinks up and you are not able to store files, folders, applications, or music, or movies of your choice. Furthermore, the performance of your system suffers and it takes more time to function or operate. Its speed is affected and it becomes visibly slow.

Are PC cleaners safe?

Not all PC cleaners are safe. Some of the applications available online are just imposters. Hence, it becomes your duty to thoroughly research the best PC cleaner before you download it. And there are two easy ways to do so. First of all, you need to go through user reviews if you want to be safe. Secondly, if you are downloading a PC cleaner from a registered or authentic place, then it is definitely safe for you to use.

Which is the best PC Cleaner and Driver Updater Software for Windows?

If you are looking for a software that is capable of performing the dual tasks of cleaning all the junk and unnecessary files from the Windows PC, along with updating all the faulty and outdated device drivers. Then the answer is CCleaner, this is the software that performs both the tasks for the users very effectively. The software comes with several benefits for the users. Firstly, users are not required to search for two different software packages and secondly, CCleaner improves the overall performance of the computer system. Users get a better experience while working on the PC after using this PC Cleaner and Driver Updater software.

By Hailey Nova

Hailey Nova is a Mac and Windows specialist. She loves to help people with all the technical stuff which is why she choose to join Firms Explorer. Hailey Nova has helped more than 12,000 viewers with her unique problem-solving content. She loves her work the most, she can even write at the midnight to help other technology enthusiasts.

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