PC Optimizer Software Reviews for 2021

It's been a busy few months reviewing and rating the best PC optimizers for 2021. We tried and tested a large number of popular and not so popular optimizers to see which are the most effective in various categories.

After testing and reviewing to find the best PC optimizer for 2021, we realized many users need a computer optimizer for different situations. Here's a quick comparison of the top software to help you compare the main features..

#1 WiseCare 365 Pro vs the Top Contenders

Here's a few optimizer battles as we compare optimizers vs other popular choices. We hope it will help you decide which is the best for your computer.

WiseCare 365 vs Glary Utilities:

WiseCare 365 defeated Glary Utilities 99 to 90 in our 2021 PC optimizer test.

Battle Results: While Glary utilities can provide good repair and deep manual tuning, it lacks the full PC and Internet optimization power of WiseCare 365.

WiseCare 365 vs Advanced SystemCare:

Between these 2 top PC optimizers, WiseCare 365 won with a score of 99% compared to Advanced SystemCare getting a score of 91%.

Battle Results: If you want the fastest PC and Internet speed, we highly recommend WiseCare 365 over Advanced SystemCare in 2021.

WiseCare 365 vs CCleaner:

An unfair battle since CCleaner is more of a PC cleaner as the name would suggest and WiseCare 365 is an all-out optimization program. WC easily wins 99 to 85.

Battle Results: yes CCleaner is an outstanding choice to clean your PC of junk files and crud, but WC will do the same PLUS fully optimize your PC and Internet speed.

WiseCare 365 vs Ashampoo WinOptimizer:

WinOptimizer had a good showing with a score of 91% and it is one of the easiest to use. However, WiseCare's high score of 99% blew it away in our test.

Battle Results: We love WinOptimizer's easy to use interface but we're not willing to sacrifice ease of use for the full optimization power of WiseCare 365. Besides, WC is also easy to use with its' automatic feature-set.

WiseCare 365 vs System Mechanic:

Now it's heating up. System Mechanic Pro almost won, with an excellent PC repair score, but WC also has excellent repair and much more. WiseCare wins 99 to 95.

Battle Results: WC 365 provided the best speed, best repair, and perfect stability. System Mechanic was a distant second with good but not leading edge optimization.

Our Reviews of the Best PC Optimizers for 2021

WiseCare 365 Review

WiseCare 365. Winner of our "Top Speed Optimizer" and "best overall PC optimizer" for the last while. WiseCare 365 will speed up your PC and Internet speed to the fastest levels. With its' advanced PC and Internet optimizing modules, you'll achieve faster PC and Internet speed than you ever thought possible. We prefer the WC Pro version due to the extra features such as a very robust, yet lightweight Internet security component. Our opinion - this is the top PC optimizer period.

WiseCare 365 details | Install and Setup Tips | Uninstall

iolo System Mechanic Review

System Mechanic Pro. One of the "Best System Repair Utilities", System Mechanic comes in 2 flavors. Whether you choose the Regular or Pro edition, you'll achieve a fully repaired PC and Internet connection. We prefer the SM Pro version due to the extra features such as a very robust, yet lightweight Internet security component. If you have PC problems or just want to make sure you never do, get System Mechanic Pro. Also does a detailed optimization.

System Mechanic details | Install | Setup | Uninstall

IOBIT Advanced SystemCare Review

Advanced SystemCare Ultimate. Our choice for "Best Value PC Optimizer" unless our leader WiseCare 365 Pro is on sale. ASC comes in 2 flavors. Whether you choose the Pro or Ultimate edition, you'll achieve faster PC and Internet speed than you ever thought possible. We prefer ASC Ultimate due to the extra features such as a very robust, yet lightweight Internet security component. Our opinion - this is a great optimizer at a reasonable cost.

Advanced SystemCare details | Install | Setup | Uninstall

Ashampoo WinOptimizer Review

WinOptimizer. Winner of the "Best Automatic PC Optimizer". This Windows' optimizer will stabilize your PC and prevent errors and problems from proliferating in the future. With it you'll perform deep tuneups to make your system speedy and more efficient. While it doesn't have the same power as others in our list, it still does the job of optimizing your Windows' install, safely and adequately.

WinOptimizer details | Install and Setup Tips | Uninstall

Glarysoft Glary Utilities Review

Glary Utilities. Years ago, I heard a few people discussing Glarys Utilities but I always thought it was a small time product. I was wrong. This is an decent PC optimization suite that deserves serious consideration if you want to manually tinket with your computer. Although, if you want extreme speed increases, there are better optimizers out there. With a very organized layout, the program is easy to understand and produces decent results.

Systweak Advanced System Optimizer Review

Advanced System Optimizer. The Advanced System Optimizer aims at being a single-click optimizer. Includes an easy to set scheduling option to prep your machine for continual optimization. For more advanced users or the more daring, there's a few tools and utilities. As always though, proceed with caution, as the manual settings can be a bit tricky. Did not perform well enough in the speed optimization category for us.
ASO details

AVG Tuneup Review

AVG Tuneup. Provides a quick Windows tuneup and finished the scan and repair in short time. Average performance gains. From the well known AVG brand that provides excellent anti-virus software. We have been and still are big fans of AVG's security products, but the optimization software is a little on the lackluster side compared to more experienced developers in the optimizing field. Only consider if you're a strong supporter of the AVG brand. For us though, our allegiance is always going to be optimization results based.

Symantec Norton Utilities Review

Norton Utilities. This utilities and tools program has been around for a long time. It was one of the first I used decades ago.

The good news is it's still an effective cleaning solution for your Windows' computer, but it lacks some of the advanced optimization functionality of the more heavily featured optimizers.

Pirform CCleaner Pro Review

CCleaner Pro. One of the most popular cleaning utilities for years, now the Pro version offers a few more features for those who want to pay a little extra for a little more.

CCleaner Pro will remove needless files, and other junk data that can accumulate on your system over time. Cleaning those files can lead to minor speed improvements.

Slimware SlimCleaner Pro Review

SlimCleaner Pro. SlimCleaner can remove junk files and crud on your hard dives or SSDs. Optimizes your Windows startup for slightly improved boot speed.

Works fairly well for what it is, a system cleaner with a few optimization opportunities from the user help and boost mode.

Pointstone System Cleaner Review

System Cleaner. More of a junk file cleaner than an optimizer. Unfortunately, many better and more advanced optimizers do this and a lot, lot more than what System Cleaner offers. Computer novices may find the program easy to navigate, but the reality will always be there, other advanced optimizers give extreme speed optimization at a similar price point. Also includes a basic registry cleaner that can safely reduce the size of your registry.

Uniblue PowerSuite Review

PowerSuite. Update - No longer available. Delivers an almost automatic PC optimization in an extremely safe and fairly effective manner. While it lacks some of the more advanced features of our other top selections, it will be a great choice for anyone who doesn't want (or have the time) to adjust numerous settings. Under the colorful design is a software solution that should appeal to most PC users, new or experienced.
PowerSuite review

WinUtilities Review

Winutilities. A comprehensive selection of Windows utilities to help fix your PC of any problems, even optimize, and speed up your system. Includes a full regiment of tools to clean the registry, temp files, erase apps, web history and cache. You will also be able to schedule maintenance at a time of your choosing. After working with WinUtilities for a few minutes, you'll have a more stable and faster PC.
WinUtilities details

AmigaBit PowerBooster Review

PowerBooster. Winner of the "Top Easy and Automatic Optimizer". Combines ease-of-use with all of the pure power of a more complicated optimizer. PowerBooster is the choice for those who want quick results but don't need or want to dig into manual settings for more detailed optimizations. A perfect PC optimizer for new users, but experienced users will also enjoy its' simple road to powerful optimization.
PowerBooster details

Auslogics BoostSpeed Review

BoostSpeed. Optimization and ease-of-use go hand in hand with the BoostSpeed optimizer. Will also clean out junk files from your data drives and helps to alleviate many (but not all) problems within Windows. Has an excellent interface that is beautifully designed, but unfortunately, the overall performance of the software is a bit lacking compared to others we tested.

BoostSpeed review | Uninstall

Best PC Optimizer 2021

Best PC Optimizer Windows Software.