Top 6 Free System Cleaning Software for Windows

System cleaning software optimizes the performance of your PC. The cleaning programs not only remove junk files but also fix invalid registry items, clear temp files, search history, and whatnot. Unlike the evil fishes in the pool, the programs that we included in this write-up are unique and high-rated. Moreover, Free System Cleaning Software manages small and even non-existent issues of the PC. Overall, they make your system run smoothly and faster.

So far, we have found the WinZip System Utilities Suite the best cleaning program. It boosts the system speed, removes unnecessary files, and fine-tunes your system’s performance. Besides, we have rounded up five other software that will make your system free from junk files and overall increase its performance. Also, if security is your concern, you can choose the program that offers you security. 

List of Best Free System Cleaning Software

Windows users can find a lot of software that can optimize your system. You can get either a paid program or free software. Of course, getting a free program is our priority. At the same time, it is not easy to find the best free system cleaning program. Admittedly, the market is packed with many programs that deliver efficient functionality but they are not up to the mark. After complete research, we have found the top software that meets the criteria of the best software. Then, we have compiled the list of the top 6 cleaning suites. Want to find the best software? Have a look below: 

  1. WinZip System Utilities Suite
  2. iolo System Mechanic
  3. CCleaner Professional
  4. Restoro 
  5. Ashampoo WinOptimizer
  6. Avira

All the software mentioned in this list is tested and gained many positive ratings. Without any doubt, you can choose any of the software and rely upon them for enhancing the performance of your system.

Free System Cleaning Software for Windows PC

Here, you’ll get to know the details of each program. The software comes with a wide range of features that make them unique. Along with many basics, extras, and perks, they have some snags that we honestly mentioned in our unbiased review. They surely tune up your Windows performance. 

1. WinZip System Utilities Suite

WinZip System Utilities Suite is free software with a bunch of features and amazing toolsets. This friendly suite enhances the system performance. It clears your system from all complexities that are affecting its performance. This way it makes sure that all unwanted files are removed from your system. Its toolset helps scan the residual files and delete the junk files. Want to secure your private data on a PC? This program lets you lock your private information.

So while maintaining system performance, it also keeps it secure and safe. Plus, it protects multiple features. All in all, it effectively maintains the performance of the system and improves your user experience. It will compress the zip files and give it three-letter compression. Since it features an option named “private virtual desktop” rest assured that while playing games no interruption takes place. And you enjoy a great playing experience with maximum processing power. 


  • Provides efficient system optimization
  • Compression of files
  • Intuitive user interface
  • Contains 20+ tools 


  • Not available for all Windows
  • Can’t differentiate small or large issues that

Bottom line for WinZip

In terms of performance optimization, you can rely totally on this software. It not only improves system performance but also keeps it secure and well-protected.

2. iolo System Mechanic

Whether you want to remove junk files or manage auto-run settings and clear out histories, caches, and RAM, this software does everything for you. You can use it for personal and business use. Amazingly, it clears more than 50 unwanted junks. Its scanning function is fast and efficient. It clears all the scans and fixes the issues. It detects and removes unwanted programs.

Moreover, it contains a set of tools that speed up the performance of your system and internet. As an efficient tool, it boosts the speed of the system. Besides, you can access a lot of tools because they are easy to navigate. It offers you an uncluttered user interface. Plus, it doesn’t require your technical skills to operate this system. 


  • Cleanup is simple and just require one click
  • Offers you a detailed analysis
  • Fast scans
  • Boosts system speed 


  • Doesn’t offer you any malware protection 

iolo System Mechanic Bottom line

Overall it is the best cleaning software for Windows. It is simple to use and offers fast scans. It keeps your system free from unnecessary files and spaces.

3. CCleaner Professional

This software contains many tools that provide real-time system monitoring. This freeware brings life into most used machines. It comes with an easy-to-use and simplified interface. It removes junk files, traces of browser history, and performs registry repairs. In case your system is running slow, it enhances the speed of your system.

With drive-wiping tools, it cleans up your system and makes your drive free from bugs and unwanted files. CCleaner Professional has many performance improvements. It stands out from the rest in the Geekbench system performance tool. Also, its boot times are incredibly amazing.  Regarding privacy concerns, it is assured that it keeps your data secure and private. It protects your login information.


  • It provides real-time system monitoring
  • Easy to use interface
  • It contains many features to protect your system
  • Intelligent cookie scan keeps login information secure and intact


  • Its performance-improvement feature is not too effective

Bottom line of CCleaner

This famous software has many features that are available in its free version. Also, it is available for Windows users and macOS. Paid version have more advanced features for business and pro-level entities.

4. Restoro Windows PC Cleaning Tool

Are you looking for the best free system cleaning software? There are tons of system cleaning software, but here is an authentic one. Restoro system cleaning software has an easy interface and effectively cleans your system without damaging valuable files. Restoro is a free system cleaning software with plenty of premium features. For example, they have an optimized registry that helps to repair the performance of your PC.

In addition, it fixes all the bugs and problems and removes faulty files. Moreover, it has several virus detection agencies that ensure no malware is left in your system. It also fixes error messaging that may irritate you during your work tasks. Moreover, it also cleans the unnecessary system files that interfere with your PC stable operations. Not only does it clear the necessary files, but also removes the cookies that threaten privacy. 


  • Fixes the window errors
  • Improves the PC performance
  • Simple and easy to use interface
  • Replaces the damaged files effectively 


  • It is only suitable for windows

Restoro PC Cleaner Bottom line

So if you are looking for an effective system cleaning software, Restoro is the best option with all its features. It is one of the finest and free PC cleaning programs that offers plenty of premium features in the free version.

5. Ashampoo WinOptimizer

Are you looking for effective registry repair or cleaner software? Then Ashampoo is the best choice. Ashampoo WinOptimizer comes in the top list of poor choices regarding system cleaners. It cleans, repairs, and optimizes your PC at the optimum level. It has advanced features that help boost the system’s stability and speed up the Window operations. Moreover, it has various versions, but the latest version provides the entire registry for invalid Windows and their expired registries.

In addition, it will give a detailed list of all registry errors that it scans in your system. If you find something irritating in your system, it will help you choose them and clean them with an automatic repair system. In addition, you can schedule the scan of your system and create a backup according to your choice in selected files. You should consider Ashampoo WinOptimizer once to clean up your junk files and data which is covering extra space on the PC.


  • Powerful system scanner
  • Fix the errors with few clicks
  • It helps to boost the application launch
  • Automatically repair the invalid entries
  • It helps to boost sector optimization


  • It has extra features that you may not require

Bottom Line of Ashampoo WinOptimizer

Ashampoo WinOptimizer has advanced features with an updated interface that is easy to use. Moreover, it is the best choice for cleaning and repairing your system. No doubt, Ashampoo WinOptimizer is one of the best and free system cleaning software for Windows PC.

6. Avira System Speedup

Avira System Speedup is an all-in-one security software that keeps your system free from viruses and bugs. It removes junk files and acts as a duplicate file finder. It scans your data from viruses and malware. Avira is packed with a ton of features that makes it stand out from the rest. If your system storage is full, this software will optimize the system and extend the storage capacity of your system. This way, rest assured that your system battery life is improved.

Moreover, it features a power mode that optimizes the system settings. This software analyzes the system and cleans it up thoroughly. Also, it works to improve the system performance to a great extent. What’s more, it makes sure that your system remains secure from crashes and freezing. Besides, it removes traces of searched websites. And keep the browser history secure and private. All in all, Avira optimizes the RAM usage of your operating system so that it creates storage space for effective use.


  • Improves battery time 
  • Enhance RAM storage 
  • Optimize system performance 
  • Protects your system from viruses 


  • Not very powerful software 

System Speedup Bottom line

Avira is a smooth-running system cleaning program that enhances its performance. Overall it is great for clearing junk files and offering malware protection.

You may also like to have a look at the best PC Cleaner Programs.

Closing Remarks: Free System Cleaning Software

PC cleaning software increases the speed of the system and boosts performance. They clean, optimize, recover and protect your system. There’s no denying that paid software is efficient for its functionality. But it is a major fact that some free cleaning programs are also present in the market. And these programs are as effective as paid ones. Therefore, we have reviewed this freeware for you in this roundup. We hope you can easily find the best program for you. But if you haven’t found the right program and looking for our recommendations, take a peek below:

WinZip System Utilities Suite: Overall best free cleaning software

Ashampoo WinOptimizer: Runner-Up and best for premium use and businesses

CCleaner Professional: Best for basic and advanced features

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