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Best PC Optimizer 2021

WiseCare 365: Download Options

2021 Best Windows PC Optimizer Software

Last Updated: June 9, 2021

We tested 35 of the best computer optimization software and Windows cleaners. The top PC optimizer of 2021 gave the absolute fastest PC & Internet speed.

The 35 Best PC Optimizer Software for 2021

Frustrated with your computer? System tuneup software is a great option to solve computer problems or give your slow PC a major speed boost. Keep reading to get the right one for your Windows 10, 8, 7, Vista, or XP computer.

Best PC Optimizer 2021 (Tested June 2021)

In our most comprehensive test ever, our 2021 Best PC Optimizer results show you the ultimate software to get for your computer. The winning software was the leading performer on all of our desktop and laptop systems - new or old.

Our 100 hour long test focused on speed, repair, and stability. We were also very sensitive to any intrusive behavior, such as spyware.

Only a few bottom dwellers took the seedy route, and as expected, they were poor performers.

The top 10 optimizers listed here are perfectly safe, contain no malware, no spyware, or any other foolishness.

The optimization features were very diverse between programs, with many aiming to increase computer speed, while others were more focused on repair and cleaning.

Thankfully, the best choice of 2021 is great at both with top speed results and perfect repairs.

Best PC Optimizer 2021.

Wise Care 365 Professional

Recommended PC Optimizer (for Fastest Speed and more)

Includes excellent optimization with an added benefit of real-time code protection. Prevents any slowdown and provides continual PC and Internet optimization. Just updated, this is the new highly advanced version for 2021-2022.

Wise Care 365 Pro. Besides featuring the best optimization routines of 2021, the PRO version's security protection protects your PC without sapping away any performance - unlike many of the bulky, and overdone security-only products. Also includes smart optimizations that continually and safely frees memory and other resources on the fly. If you want an intelligent optimizer that continually speeds up your PC and Internet, this is easily the best optimizer choice for you. Click here to find out how to get it.

Editor's Choice: Best Overall

Best PC and Internet optimization for less than many other bloated optimizers that are far less effective. Accelerates your PC to extreme speeds with improved stability.

( EDIT: The last few weeks, the PRO version was on sale, but it's ending soon. )

Basic Version.Please Note: WiseCare 365 Pro (above) contains the most PC optimization benefits and automatically delivers speed - shown to the right..

PLUS WC 365 Pro has even more advanced features to continually keep your PC and Internet at maximum speed. While also providing rock-solid Windows' stability with advanced slowdown protection.

A serious speed-eccentric optimizer that surpasses other higher priced but less effective optimizers. Sure, the interface may need a little work, as it's a little bland, but the speed results and value easily make up for an interface that you will rarely see. With the mostly set it and forget it advanced optimization routines, you will simply be enjoying the added zippiness to your PC and Internet - instead of poking and prodding through the program like many of the other overly complicated, and less effective optimizers available online. If you invest in the Pro version, it will reward you with faster performance and a much more stable Windows environment to avoid any problems for the lifetime of your PC.

Why did it win BEST PC Speed Optimizer?

Optimizing a Laptop PC.Continually and effectively optimizes your PC and Internet. The automatic option will keep your system in a perfectly optimized state.The full system optimizer improves startups, shutdowns, and more responsive performance for your PC and every program installed. You can easily set the real-time optimization to work on the fly to safely adjust system services and RAM.

Why did it also win the Best Value PC Optimization software?

Quite frankly, I believe it's priced too low for all of the advanced PC optimization features included. Hopefully, the developers will continue to offer it at this low price, but I can't help but think they may eventually raise the price to the same level as other quality optimizers in the $50-$80 range.

Wise Care 365 showing all of the tuneup utilities included.Even though WiseCare's interface is not as graphically pretty as a few others, I believe it's intentional to make it easier to quickly learn the program.

As you can see in the image to the right, it still looks cool and better than most. Plus they keep improving the interface and fine tune the program with each update - the latest being just a few weeks ago.

Easy and Automatic Optimization for Windows:

You will get automatic optimization of your PC in only a few minutes after download. It's easy to set-up the auto-schedule to have the program optimize your system. This is what I did and it squeezed even more speed out of my PC and Internet every time I used it.

After a week, the improvements were even more pronounced. After months of use, this full scale system optimizer has made my PC the fastest its' ever been. Including perfect stability - no crashes, freezes, or even minor slowdowns for months.

Long term performance results after 2 months:

We thought it would be important to continue testing through 60 days. Which is also how long the satisfaction guarantee is valid.

  • The system speed (PC and Internet) on every computer tested has not returned to former slow speeds. In fact, they improved even more over 2 months.
  • Perfect stability has maintained. Not a single error or problem on all systems. Even our old Windows 7 notebook is still running perfect at the much faster optimized speed.
  • Wise Care 365 Pro works seamless with every program. Had perfect compatibility with all, including a multitude of security and anti-virus app's.
  • All Windows versions are much faster and in perfect running order two months later. Even after a few major Windows updates, there were no changes to the performance.

Also has a very detailed, and more important to us, safe registry cleaner with a built-in undo function. Since so many other weaker programs are close in price, it's easy to recommend getting WC 365 Pro.

Of course, we love its' comprehensive PC optimization and slowdown protection. But it also worked alongside all our current stability test programs without problems. While many others, that cost more, failed in a miserable and disappointing way.

All games installed had their frame rates and loading times improved. Sometimes as high as an extra 20 FPS. It was routine to knock off 5-20 seconds to load times for games.

This included League of Legends, Fortnite, PUBG, Overwatch, Siege, CoD, and Star Citizen. A blessing for early access games that lack the optimization of finished games.

I also felt much less frustration while playing with smoother frame rates. There were no longer any of those annoying occasional freezes and slowdowns.

This program is saving you time with every task you perform on your computer - that can add up to hours every day. Especially if you're like me and work on your PC for long sessions or play games late into the night.


  • Real results; the best system speed (PC + Internet), comprehensive repair, with rock-solid stability.
  • Improved PC performance on every program and game installed on our systems.
  • Boosted the Internet much more than all others. This helped improve movie streaming with much less buffering for perfect playback. File download speeds also improved.
  • Setting up the automatic function was easy and very effective. It made fumbling around the program unnecessary.
  • The accumulative and continual optimization improves performance even further as time goes by. We got outstanding results immediately.
  • After 2 months, it's still optimizing and making performance better.
  • There's an optional portable version included for free with the Pro version. Although the full install includes a few more advanced features.
  • Future-proof because it works with any Windows laptop or desktop, new or old. You'll be able to use it on all your computers in the future.
  • Passed all online malware scans. 100% clean.
  • Passionate developers who care about their work with frequent updates and friendly support.
  • No-risk and no-hassle 60-day money-back guarantee.


  • The portable version (included for free in the Pro version) does not contain a few features. For complete optimization and security, we recommend a full install (default).
  • Interface is a little bland and not as modern as others. Rarely seen since we used automatic functions and the convenient right-click context menu's.


The answer is clear. Wise Care 365 Pro gets our full recommendation. You'll get innovative PC optimizer technology that is easy to use. It will unlock the major optimizing opportunities that lay dormant on every computer.

If you're tired of the default settings that are in place to keep the PC manufacturers' job easier. It's time to access the true power of your computer system.

It's the surefire way to boost your computer speed while improving stability. WC 365 Pro propels itself into the top system optimizer slot for best PC tuneup of 2021.

Recommended for:Users looking for extreme PC and Internet speed. I highly recommend the Pro version of WC 365 for anyone who's serious about getting the most out of their PC and Internet, each and every day. Versus all of the others we tested, and we tested all of them, you'll get a lot more with WC 365 Pro than any other.

If you want a budget friendly, yet leading edge PC optimizer that will impress with new zippiness to your computer and Internet, this is easily the best optimizer choice for you. It's certainly affordable, to the point that I believe it's actually under priced - especially if you're lucky enough to catch WC 365 Pro on sale. We routinely check for the lowest sale price and always post it in our latest update here. Enjoy.

Works with: All old or new PC Desktops, Notebooks, Laptops & Tablets running...
Microsoft® Windows 10. 8, 7, Vista, or XP.

Top 10 PC Optimization Software for Windows

We tested and compared all of the best computer optimization software available to speed up and repair your Windows system. After over 100 hours of testing 35 of the most popular optimizers, here are the best results.

1. WiseCare 365 Professional

Windows 10 Optimizer (also for 8, 7, Vista, XP)

99% Download and Buy WiseCare 365 Here The best PC Optimizer if you're looking for the most advanced Windows optimizer available for your computer system and Internet. WiseCare 365 Pro boosted our speed the most, while maintaining actually improving stability.

Also absolves your system of all problems and even prevents any future ones from developing.

The best speed results, best tuneup utilities for repair, and improved stability. It's easy to see why this is the leader in our recent test. It will automatically optimize your system in mere minutes. It's perfectly safe and even improved stability in our major error test. Since it was the only one that did that, was an amazing feat in itself.

After our latest tests, our entire team concluded there's simply none better than Wise care 365 Pro right now or in the foreseeable future - and here's why ...

The top reasons why this is the best PC optimizer software;
  • Best Speed Results of all tested. Computer responsiveness improved with lightning quick program and game loads.
  • The advanced RAM optimizer put a stop to the slowdowns we had during intense usage of resources. Whether from demanding games or resource-intensive programs.
  • Boosts the Internet response rate up to 300%. Will also optimize the most popular web browsers for extreme surfing speed. Solves disconnect issues.
  • SSD optimization for full speed on digital drives. On hard disk drives, it will place important data to the high speed sweet spot of your drive.
  • Gamers will have a field day with the extra performance for better frame rates. Also reduced lag during online gaming.
  • Repaired all Windows errors and system problems on our error-plagued test rig. Improved our Windows install like it was back to new.
  • Passed over 50 malware scan checks. Our anti-virus was set to the most sensitive heuristic setting. It has never alerted us about Wise Care 365 Pro.
  • Effective on all Windows 10, 8, 7, Vista, and even old XP. Works with all old or new desktops and laptops running any of those operating systems.

Unlike all others tested, Wise Care 365's continual and constant slowdown prevention, lets you keep your speed gains. Your PC and Internet will always be at the highest speed possible, each and every day, from now on. Wise Care 365 Pro gets our strongest recommendation.

"WC 365 Pro proved itself in every PC / Internet speed, system repair, and stability test we threw at it. The end result - super speed levels without errors or problems."

You can read our full review for more, or see the download details and options here.

Works with: All old or new PC Desktops, Notebooks, Laptops & Tablets running...
Microsoft® Windows 10. 8, 7, Vista, or XP.

2. iolo System Mechanic Pro

PC Tuneup and Windows Repair Utilities;

95% Iolo System Mechanic Pro. One of the best system utilities to easily fix PC problems, System Mechanic Pro provided a thorough cleaning and fixed the majority of errors on our troubled Windows' test computers.

A thorough and complete repair utility that is a pleasure to use. Although the top pick in our PC optimizer list also has excellent repair, but with much more comprehensive optimization.


  • Does a good job at repairing common problems.
  • Nice looking and easy to understand interface..


  • The registry cleaner froze-up occasionally and took a long time.

3. IOBIT Advanced SystemCare

Computer Optimizer and System Applications;

91% IOBIT Advanced SystemCareBoth versions of Advanced SystemCare (Pro and Ultimate) give you excellent system tune up utilities for Windows computers. When your PC is struggling, ASC has good problem solving capabilities to fix it up.

Years ago, this was my go-to computer optimizer. As time went by, I found others that were much more effective, but I still have a soft spot for this one.


  • Well designed and easy to navigate.
  • Comes in 2 flavors - We preferred Ultimate over Pro.


  • Repair functionality was a little weak in some tests.

4. Ashampoo WinOptimizer Pro

Easy PC Booster for Beginners;

91% Ashampoo WinOptimizerWith the WinOptimizer program, you will get faster speed for your Windows PC through one of the easiest to use interfaces.

A good option for new computer users that want lightweight optimization from an extremely simple PC optimizer. However, the top 2 are also easy to use but much more effective with their advanced automatic optimization.


  • Very easy to use.


  • Only fair PC and Internet speed improvements.
  • Had trouble with compatibility in some tests.

5. Glarysoft Glary Utilities Pro

Registry Cleaner and Tools;

90% Glarysoft Glary Utilities A great set of Windows tuneup tools that provides a quick PC tune up. Unfortunately, Glary Utilities lacks more than a few of the advanced optimization features of the leading optimizers.

However, it still does an excellent job to keep your PC stable with a mild performance boost. The multitude of manual settings were fun to explore, but very time consuming, and there's a fairly high learning curve.


  • Lots of utilities to sift through.


  • Lacks the advanced optimizations of the top programs.

6. AVG PC Tuneup Utilities

Windows Cleaner and Maintenance App;

90% AVG Tuneup Screenshot. Is AVG's PC Tuneup Safe? We had no problems using AVG PC Tuneup. But you'll need to be careful and read what each of the 35 included tools are doing before proceeding. It was a little too easy to make mistakes.

If you need a quick PC tune-up, it performed OK. There are other optimization programs above that will serve you better.

7. Systweak Advanced System Optimizer

PC Optimization Software;

89% Advanced System Optimizer. A simple program to use, Advanced System Optimizer can speed up your PC a little bit. It has an automatic function and we liked the pleasant, yet colorful interface.

Yet, there's no dedicated Internet optimizer module. So if that's important, you may want another. For us, since everything's connected to the Internet today, that was a deal-breaker. But if you're looking for only PC optimization, it may deserve a look.

8. Piriform CCleaner Pro

PC Cleaner Software;

89% CCleaner Pro. Had trouble recently with malicious code injected into their program. At last check, it appears they have the all clear now

It's more of a cleaner than an optimizer. An advanced Windows speed optimizer is not CCleaner's strength. Like most, you can set a schedule to clean your system, but it had a very weak optimization score.

9. WinZip System Utilities

Windows Utilities and Maintenance Apps;

88% WinZip System Utilities. A good but not great set of tools for Windows. Provides maintenance in an easy to use interface, but in our testing, we were frustrated with the finicky driver updater function.

Particularly enjoyed the Process Library which allowed easy viewing of the resource hogs on our system. Overall it performed adequately, but the speed gains were minimal at best.

10. Symantec Norton Utilities

PC Tools and Utility Program;

88% Norton Utilities. In the late 1990's, I used Norton Utilities and loved it. There were very few competing programs at that time. And it was the best utility software available, but that was over 20 years ago.

Today, it's still a fair option to clean your hard drive of junk files. It does lack the advanced system optimization tools of the better solutions.

11. Slimware SlimCleaner Pro

Clean Up Windows Software;

87% SlimCleaner Pro. An array of system maintenance utilities to keep your computer clean. Also helps to remove unwanted programs.

A pretty and colorful program that can struggle at times to optimize. In the end, performance was disappointing. Yet the interface was one of the simplest and easiest to use.

The Runner-Ups:

After testing, comparing, and reviewing to find this year's best PC optimizer, there were a few contenders that never quite made it to the top, but they were still good programs in their own right.

12. Comodo PC Tuneup - Was a little shallow in features. While a decent PC cleaner, it fell back with the lack of advanced optimization we have come to expect from today's more popular optimizer programs.

13. Anvisoft Cloud System Booster - As always, these cloud solutions sound good on paper, but the reality is the results were worse than standard pre-programmed solutions.

14. Jv16 PowerTools Pro - Includes a very detailed registry cleaner that performs really well, but it lacks the app's and tools needed to push your system to much faster speeds.

15. Defencebyte Computer Optimizer - We almost missed this one. It performed well enough, but it will need to provide a little more advanced optimization to satisfy speed hungry Windows' users.

16. Restoro - We had big hopes for this new entry, but it disappointed with below average results.

17. Asmwsoft PC Optimizer - Optimizes PC's from within a very simple interface, but it needs more features.

18. Pointstone System Cleaner - A junk file cleaner for Windows, it does a fine job of removing useless files and data from your computer. Needs more advanced features to become a leading solution.

19. 1-Click PC Care - The single click sounded good up front, but the overall performance was only fair.

20. Amigabit PowerBooster - With just OK results, it seems that PowerBooster is becoming one of those programs that is not being improved upon over the last few years.

21. WinUtilities Pro - WinUtilities Pro cleans your computer and can fix problems with a single click. More of a PC cleaner than a pure speed focused optimization program.

22. BoostSpeed - So many hoops to jump through to get the program, but not worth it in the end.

23-35 - Some of the bottom dwellers are certainly not worth listing here or anywhere - mostly for your protection, as a few of them were very harmful.

PC Tuneup Comparison

Here we compare the top 3 system optimizers. We included a few more of the detailed results to help you choose the best for your particular computer and needs.

PC Cleaner / Optimizer
(Results from June 2021 test)
365 Pro
Mechanic Pro
Final Rating: Excellent. Very Good. Good.
Optimize PC Speed: A+ B+ B-
Optimize Internet: A+ B B+
Slowdown Protection: A+ A A+
Clean Registry: A+ A+ A-
Optimize Registry: A+ A+ A
Improve Program Load Times: A+ A A-
Improve Computer Startup: A+ A+ B-
PC Gaming Improvement: A+ B+ B
Fix Problems & Errors: A A A-
Notebook Performance: A+ A- B+
Desktop Performance: A+ A A-
Optimize Windows 10: A+ A- A
Optimize Windows 8, 7, Vista, XP: A B- B+
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Test Analysis Score: 99% 95% 91%

FAQS: Best PC Optimizer Software;

📈 What is the best PC optimizer for Windows 10, 8, 7?

Answer: After testing over 30 programs, the best PC optimizer software is Wise Care 365 Pro. There's no other program that can compete with its' advanced PC optimization features.

🗲 How does a PC optimizer improve computer speed?

Answer: A PC optimizer will boost everything you do on your Windows' computer. Including PC gaming, work app's, web-surfing, emailing, downloading, and movie streaming.

⛨ Will a PC optimizer repair and stabilize my system?

Answer: Yes, it will repair any system problems that currently exist. Plus it will protect your system from future issues. The result is extreme speed with perfect stability over the lifetime of your PC.

✔ Is it easy to use PC optimization software?

Answer: The automatic function will fine-tune your PC and all installed programs. This easily gives you blazing fast system speed gains while improving system stability.

🌐 Will a PC optimizer speed up my Internet?

Answer: Yes, most PC optimizers today include an Internet optimizer feature. Your Internet settings and web browser will speed up to 300% in some problematic cases.

💻 Will the best Windows optimizer work with my computer?

Answer: The best Windows optimizer of 2021, Wise Care 365 Pro, works with any desktop, or notebook PC. Compatible with Windows 10, 8, 7, Vista, or XP.

⚠ Are PC optimizers dangerous?

Answer: If you decide to get an optimizer elsewhere, please be careful. There are more than a few optimizers with hidden malware and malicious code. All listed here on our web site have been anti-virus scanned and proven to be safe and effective.


PC optimization software is a collection of tuneup utilities programmed to improve slow computer performance by optimizing settings within the Windows operating system. This removes the speed-reducing default bottlenecks that are put in place for easier hardware compatibility for the PC manufacturers. Once optimized, all of the computer's hardware components - including the CPU, GPU, and RAM - will be able to utilize their full capacity, leading to improved performance.

All of the PC tuneup software on this page were the best in our tests. If I was to recommend one for everyone, from experts to new users - my best PC optimizer choice is absolutely Wise Care 365 Pro.

The reasons why are outlined in detail on this page. Simply put, it's the best because there's just no other program that can compete with its' advanced PC optimization features for the fastest speed gains, perfect repairs, and rock-solid stability.

Why do some other tech sites have a different opinion?

For over 20 years, I've been testing and personally using tuneup utilities while also writing my opinions of them on this site and a few others. One thing that has been constant is the multitude of emails I get from many of the software companies offering kickbacks and extraordinarily high commission rates to feature their software.

Since I've had a rewarding career as a programmer, I have been fortunate enough (through hard work) to be financially secure - now I'm happily semi-retired. So these offers don't have an affect on me, like they would on a tech site with a business bottom-line. Most importantly, I have never received one of these emails from WiseCare - and they've been around for over 10 years - that may explain the lack of enthusiasm on other tech sites. I commend the WiseCare team for focusing on the quality of their program and not becoming obsessed with marketing hype like most others. It's an intelligent strategy that I feel will help them win their due accolades in the end.

Of course, many other tech sites may not have tested the new 2021 advancements to WiseCare 365, or they haven't updated their lists in a long time. By the way, many tech sites just change a few words or the actual published date to look like they ran new tests and updated for the year - don't be fooled, some of those lists are ancient.

Final Word

Optimizing your PC can be complicated if you're into manually adjusting hundreds of settings and registry entries. Even a tech expert would never be able to manually adjust all of the hidden and locked settings within your computer.

Everyone needs their system to be the best it can be - and an optimizer will produce a super fast and perfectly running computer for as long as you own your PC. And it works with any desktop, notebook, or tablet running Windows.

If you decide to get a PC optimizer elsewhere, please be careful. There are more than a few with hidden malware and malicious code. All listed here on our web site have been fully scanned and proven to be safe and effective. Thanks for reading.

Author: SpeedupNew

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.

Best PC Optimizer 2021

WiseCare 365: Download Options

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