5+ best free PC optimization software [2022 Guide]

by Matthew Adams
Matthew Adams
Matthew Adams
Windows & Software Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things... read more
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  • Over the years a PC might become slower and less reliable than it once was. This is where PC optimization software comes in handy.
  • You can breathe new life into your PC with these best free PC optimizer options.
  • The list below includes performant tools that can improve system performance in minutes, within a few clicks.  
  • Each free PC optimizer on this list has its own special features and they all do a great job.
free pc optimization software

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Over the years, a PC might become slower and less reliable than it once was. This can be due to invalid registry entries, lots of background apps, malware, a fragmented and full hard disk, and more besides.

Although Windows already includes numerous system-maintenance tools to keep things ticking smoothly, there are loads of PC optimization programs that can boost system performance.

A PC optimization software relies on hard disk and registry cleaners, disk defrag, RAM optimizers, and startup tools.

The best PC optimization software includes a wide variety of system-maintenance tools and options, and these are a few freeware programs with which you can supercharge Windows.

How to choose a good PC optimizer? First of all, you will need to ask yourself what do you need it for.

Below, we will answer a series of questions like :

  • Can an optimization software remove bloatware?
  • Which optimization software is user-friendly?
  • Can it optimize your Internet connection speed?
  • Can you defragment your drives with it?
  • Does it make back-ups?
  • Can it analyze your hardware?

How to find the best PC optimization software for gaming?

There are many great game booster applications available that will help you optimize your gaming experience and improve your performance.

To optimize your performance, you can use any Windows optimizer software since it will clear all your temporary files and free up the necessary space.

If you want a real boost, you might want to try using RAM cleaner applications to free up RAM and leave more memory to other important tasks.

Which is the best PC optimization software for your computer?


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Restoro is a one-click solution for optimizing your Windows 10 PC and keeping it running well over time.

You start by performing a deep scan of your computer, where Restoro will analyze your system’s hardware and software and find all the issues it has.

Once the scan is complete, you can fix everything with one click or look at all the problems individually to determine which ones you want to fix.

Additionally, once you’ve optimized your Windows 10 PC, you can let Restoro work in the background.

Moreover, Restoro offers the functionality of several software solutions in one package, making it easy on your system and a breeze to manage as you don’t have to keep track of several programs on your PC.

Should you encounter any issues, Restoro’s customer support staff is available to help you 24/7 and as an added benefit, you can try Restoro risk-free thanks to its money-back guarantee.

As mentioned, Restoro offers the functionality of several software solutions, so with just one program, you benefit from:

  • Virus removal and protection
  • Disk space analyzer
  • Registry cleaner
  • Replace or repair DLL files
  • Clear Windows errors
  • Real-time monitoring

Note: The program is also available in a free version, but if you want to enjoy its full functionality, then getting the premium version is your best choice.


Optimize your Windows 10 PC with Restoro to make sure it will run error-free and quick for a long time.

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CCleaner is award-winning PC optimization software with an extensive user base eclipsing two billion downloads.

It has fairly thorough cleanup tools that don’t erase any more essential system files, and you can use this software to free up hundreds of megabytes of disk space, remove software, manage startup items and repair possible errors.

The freeware version of CCleaner might lack some of the scheduling, file recovery, and disk defragmentation tools included in the Professional Plus package; but it still has a few handy options for system optimization.

You can add the freeware CCleaner to Windows, which is quite limited in actions and in customizing CCleaner’s work.

But there is also a full version of CCleaner Pro if you are interested.

CCleaner primary tools

CCleaner’s primary tools are its hard disk and registry cleaners. It has flexible hard disk and registry cleaners that you can configure to delete a variety of more specific files and registry items.

The software also has extra settings that enable users to select specific folders or files to either delete or exclude from system scans.

Another advantage of CCleaner’s hard disk cleaner is that it also enables you to clean up third-party software file items.

Beyond the HDD and registry cleaners, CCleaner’s tools might seem a little limited compared to some alternative optimization software.

The freeware version doesn’t include any disk defrag, RAM optimizer, shortcut fixer, one-click maintenance option, or much in the way of file management tools.

However, it still has a good startup manager with which you can not only remove startup items but also delete scheduled tasks and third-party software context menu entries.

CCleaner’s handy Browser Plugins tool enables users to quickly activate or deactivate browser extensions, apps, and plug-ins. You can also search for and erase duplicate files with the Duplicate Finder tool.

So even if CCleaner doesn’t have the most extensive number of utilities, it’s still a handy Windows optimization program.


Bring back the maximum performance on your PC with full system optimization from CCleaner

Free trial Visit website

System Mechanic Ultimate Defense

System Mechanic Ultimate Defense is one of the most highly-rated PC optimization programs for Windows.

This has a freeware and Pro version that includes some more advanced modules with anti-virus, internet connection tweaker, Windows customization and search and recovery tools.

Nevertheless, the freeware version still has the essential maintenance tools to give Windows a genuine boost.

System Mechanic Ultimate Defense has an intuitive and appealing UI design that includes most of the software‘s tools and options within a left sidebar.

It gives you a system status overview (shown in the snapshot above) that highlights things that need fixings, such as registry issues, junk files, or fragmented hard drives.

System Mechanic Free retains several of the essential tools from the full package. It has a junk file cleanup tool that does a system-wide scan to erase obsolete files.

It includes a registry tuner with which you can fix invalid registry entries, and that also comes with backup and restore options.

With the software‘s startup manager users can remove startup bottlenecks to speed up boot times. In addition, you can also speed up Windows with System Mechanic’s RAM optimizer that defrags RAM.

On top of that, this utility has tools to fix invalid shortcuts, repair internet connections and defrag hard disks; and users can run multiple tools at once with its wizards.

Iolo System Mechanic is one of the 7 software products included in the comprehensive security, privacy, and optimization package Phoenix 360.

System Mechanic Ultimate Defense

System Mechanic is full of excellent optimizing features that stand beside its trustworthy name.

Free trial Download

IObit Advanced System Care

PC performance issues are usually linked to either system mishandling or viruses, logic dictates that the best PC optimization tool would be one that has both speed-up tools and certain antivirus features.

IObit Advanced System Care is one such program and is based on the popular IObit anti-malware engine.

This tool incorporates top antivirus capabilities, as well as the already proven comprehensive PC tune-up ability, thus providing protection against all kinds of security threats, system slowdown, freeze, and crash without slowing down your system.

The program runs silently in the background without actually slowing down your system as other so-called PC optimization tools do.

More so, it also comes with a free version, and those that do not wish to continue with the subscription can always revert to it, without having to uninstall the program.

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As for usage, the program is extremely intuitive, with the menu being arranged in a way that caters to both experienced users and beginners alike.

All in all, the program is an excellent addition to anyone’s digital library, especially those that value performance above all else.

IObit Advanced System Care

This is one of the best system optimizers out there that also comes with a free version.

Free trial Visit website

AVG PC Tuneup

Yet another PC optimization tool that is based on a very popular antivirus tool, AVG PC Tuneup.

Incorporates all the protective tools of AVG antivirus with basic PC optimization tools that everyone needs in their PC.

It doesn’t matter if your PC is slowing down due to old age or simply there is a ton of junk files on it, AVG PC Tuneup will take care of it and make it run almost as if it were new again.

It allows you to:

  • Speed up your Windows PC
  • Remove junk files to free up space
  • Rid your browser of hidden files
  • Uninstall software you don’t need
  • Get all-round 1-click maintenance

As for the programs running in the background, they may be annoying but at the same time maybe you don’t want them removed.

If that is the case, you can use AVG PC Tuneup to put them to sleep, and stop them from hogging any more resources.

However, there is also software that has no business on your PC, which you may know as bloatware.

AVG PC Tuneup knows how to deal with these issues, by cleverly detecting and removing them, even when other programs can’t.

All in all, AVG PC Tuneup can be considered a more elaborate refresh button for your PC, and a much more affordable alternative to buying new hardware.

AVG PC Tuneup

This PC maintenance software will clean up and optimize your system to work like new.

Free trial Visit website
Note icon
The program is also available in a free version, but if you want to enjoy its full functionality, then getting the premium version is your best choice.

Ashampoo WinOptimizer

The latest Ashampoo WinOptimizer might have more extensive file management and system maintenance tools, but there are still plenty of options and settings to explore in the freeware version.

WinOptimizer Free has Drive Cleaner, Registry Optimizer, and Internet Cleaner tools for system maintenance. Its One-Click-Optimizer provides a handy shortcut to run those tools simultaneously.

The Drive Cleaner is flexible as users can create exclusion lists, add file filters and configure it to delete items to the Recycle Bin.

WinOptimizer’s Startup-Tuner is another more essential system maintenance tool with which you can disable Windows services and edit startup items.

The program comes with a Task Scheduler for you to schedule optimization runs, and it also saves the most frequently used modules in Favorites for quicker access.

However, WinOptimizer isn’t just system maintenance software. It also includes handy Windows customization and file management tools.

For example, the software has a Context Manager you can customize Windows context menus with.

The Icon Saver enables users to save Windows desktop icon arrangements.

In addition, you can split up, encrypt and recover files with WinOptimizer’s File Splitter, File Encrypter, and Undeleter tools. So WinOptimizer offers more tools than most optimization suites.

Ashampoo WinOptimizer

Your PC became too slow and cluttered? Run a system analysis and optimize it using Ashampoo.

Free trial Visit website

Glary Utilities

Glary Utilities is a cut-down version of the Pro package.

However, there isn’t that much difference between the freeware and Pro version aside from Glary Utilities Pro’s automatic updates, free technical support, and extra scheduling options.

There’s also a free portable version of the software you can run from external drives.

Glary Utilities is packed with more than 20 system tools to optimize Windows.

It includes all the more standard tools such as disk cleaner, registry cleaner, startup manager, uninstalls manager and disk defrag.

On top of that, this program also has fewer standard tools for removing malware, fixing invalid shortcuts, deleting empty folders, erasing duplicate files, splitting and joining files, and even file recovery.

Glary Utilities enables users to run a custom 1-click Maintenance scan that incorporates a number of its tools, which can come in handy.

The program’s RAM optimizer enables you to select a more specific amount of RAM to free up with a slider bar.

Glary Utilities also integrates with File Explorer so that you can select some of Glary’s file management options directly from context menus.

Overall, Glary Utilities has almost all the tools you’ll need for PC optimization.

Get Glary Utilities

Glary Utilities

Benefit from this free PC clean-up software that offers complete support to optimize and speed up your system.

Tweaking Windows Repair

The second entry on our list is a software tool that may not look like much at first glance, but it definitely proves that you shouldn’t judge software from its fancy UI.

Tweaking Windows Repair is a complete system repair and optimization tool that will work fast and efficiently so that your PC can be back to its original state.

Tweaking Windows Repair is available in both a free and a Pro version, and both are good at solving the most common PC-related issues that you may ever encounter.

While the Pro version does indeed offer a few extra features, all of the basics are covered in the free version as well, so unless your PC has encountered some really serious problem, there’s no need to spend a single dollar.

Tweaking Windows Repair

Resolve all your Windows-related errors using this comprehensive optimizing software.

WinUtilities Free

WinUtilities Free is another all-in-one PC optimizer with a freeware and Pro edition, which has an annual subscription. The publisher reveals relatively little about the differences between the freeware and Pro editions of WinUtilities.

The UI design of both editions is almost identical, but the File Undelete, Task Scheduler, and Duplicate Files Finder only work in the Pro version, which also has free technical support.

WinUtilities Pro also boasts a more effective registry scan engine and disk cleaner.

WinUtilities Free has an impressive 25 modules that consist of PC optimization, clean up and repair, files & folders, registry, and other system tools.

In the optimization category, users can select Registry Defrag, Disk Defrag, Startup Cleaner, RAM optimizer, and BHO (Browser Helper Objects) Remover tools.

The software includes a Disk Cleaner to remove junk data, Registry Cleaner to fix invalid registry entries, Shortcut Fixer, and Uninstall Manager.

The software’s 1-Click Maintenance option incorporates most of the cleanup and defrags tools.

WinUtilities Free has some useful file and folder and registry tools to split and merge files, analyze disk space, back up the registry and remove and restore context menu options and settings.

The publisher has also packed all those tools within a clean and intuitive UI.

Get WinUtilities

We hope that our list with the best free PC optimization software to your own requirements. If you have any other suggestions, leave us a comment below.

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Frequently Asked Questions

  • PC optimization is a blanket term for cleaning leftover files from previous installations, cleaning the registry or deleting temp files and several other operations typically done by means of specialized software.

  • If you want better performance during gaming sessions, check out this list of great game optimizers.

  • Whilst most optimizers will get the job done, we recommend Restoro as it provides better functionality than most other. It incorporates antivirus functionality and hardware-level scanning.

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