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As we use our computers daily– and by extension the internet– we basically leave behind a digital footprint which can be a cause for concern for many of us out there. The internet history left behind by browsers, windows temporary files, search histories, recent documents, network passwords and log files all leave behind potentially sensitive information which we simply would not want to be viewed by other users of your computer. Of course there is also the risk of being hacked which would make this information much more readily available to be used against you in that event if it is left behind.

• Best Free Mac Cleaner Reviews
• Mackeeper Free

This sensitive information can be removed manually but doing so would be quite tedious and the amount of time it would take to do so would turn off many users almost immediately. Luckily, there is software out there which can automate the cleaning up of the information. Yes, privacy cleaners are the solution. Anyone who shares a computer or anyone who uses the internet – so that makes everyone then – should look into using one of these since we all want to protect our privacy.

Mac Cleaner free download - Wise Registry Cleaner, Wise Disk Cleaner, Auslogics Registry Cleaner, and many more programs. Best Free Mac Optimizer Cleaner free download - Advanced SystemCare Free, WinUtilities Free Edition, Registry Optimizer Free, and many more programs. 3 Best free PC Cleaner Software: Glary Utilities: Glary Utilities is the best all in one PC cleaning software. It has 20+ powerful tools that will optimize your PC performance at the best level. You can quickly Optimize your computer with 1-Click Maintenance button, So you’ll not need to wait for PC analyzing. CleanMyMac X takes the first place with good reason — this cleaner combines.

This review is part of our Best Free Windows Software section. Check out more articles on the best free Windows programs by clicking here.

Table of Contents[CCleaner vs BleachBit vs KCleaner vs Privazer]

Best Free Privacy, History, And System Cleaner

Program Name: CCleaner with CCenhancer

Developer: Piriform

Download Size: 4.8MB

Version Reviewed: 4.0.5.4520

Requires: Windows 8/7/Vista/XP/2003/2008

Pros

• Is feature-filled, cleans multiple aspects of your privacy/history/temp files/junk/traces/etc. related to Windows features and third-party software, including web browsers
• Several browsers supported, including Internet Explorer, Firefox, Chrome, and Opera
• Functionality can be further enhanced with CCenhancer, a third-party program
  • Note: CCenhancer is not officially supported by Piriform so if you decide to use it, this will be at your own risk.
• Allows for secure erasure of your data/privacy/history/etc.
• Has extras such as uninstaller, registry cleaner, startup monitor, file finder and drive wiper
• Has portable version
• Easy to use

Cons

• The installer version of CCleaner comes bundled with bloatware during installation, such as Ask Toolbar. You can get the ‘slim’ or portable versions to avoid the bloatware.
• Sometimes registry cleaner must be run multiple times before all errors are taken care of
• Uninstaller is basic

Discussion

CCleaner is tough to beat when it comes to effectiveness as a privacy cleaner. In addition to erasing sensitive data CCleaner can allow for the freeing up of free space on the order of gigabytes since the data which it deletes builds up and takes up unnecessary space over time. This combination of being an excellent privacy cleaner as well as its ability to create free space is what makes it the number one pick. Combine it with CCenhancer and its effectiveness increases further. What more could you ask for?

The user interface is clean and well laid out, making it easy for users navigate and select the various options. At the top of the main screen, along with the name of the program, information about the computer on which it is installed is displayed such as the version of Windows, processor type, amount of ram and chipset. On the left of the screen, the Cleaner function can be accessed as well as the Registry Cleaner, options and other built in tools such as an uninstaller. The middle section of the screen displays information about whatever function is being utilized currently; be it the Cleaner or otherwise.

Best Free Mac Cleaner Reviews

The core of the program’s functionality is the Cleaner. This will take care of most if not all of the sensitive information left behind after a period of using your PC. The program allows for removal of information left behind by Windows as well as third party applications. The Windows categories are as follows:

• Internet Explorer
• Windows Explorer
• System
• Advanced

With Internet Explorer, temporary internet files, history, cookies, recently typed URLs, Index.dat files, last download location, autocomplete form history and saved passwords can be cleaned.

As it relates to Windows Explorer, recent documents, thumbnail cache, taskbar jump lists, the list in the Start Menu’s Run dialog box which contains programs run from it, as well as Windows Explorer most recently used lists are cleaned.

System files which can be cleaned are files found in the recycle bin, temporary files, information stored in the default Windows Clipboard, memory dymps, Chkdsk file fragments, Windows log files, Windows error reporting, DNS cache, Font Cache, Start Menu Shortcuts as well as Desktop Shortcuts.

Under the Advanced category, windows event logs, old prefetch data, the menu order cache, the tray notifications cache, the window size/location cache, the environment path, user assist history, IIS Log files, custom files and folder can be cleaned and the facility is also available for the wiping of free space securely. (Check out our Best Free Secure File Erasing Program article for further information on secure file erasing.)

To run the cleaner, you have the choice of doing an analysis first — which will give you detailed information about the files which will be cleaned — and then actually running the Cleaner.

In addition to information left behind by Windows, several third party applications are supported. These include Windows Media Player, eMule, Google Toolbar, Microsoft Office, Nero, Adobe Acrobat, WinRAR, WinAce, WinZip and many more including several of the browsers covered in our Best Free Web Browser article.

The installation of CCenhancer alongside CCleaner adds support for cleaning of 1,000 additional programs that CCleaner doesn’t support natively, which can only be a good thing since many installed application has the potential to store sensitive information which could be used against you.

In addition to effectively erasing sensitive information, another effect an excellent privacy cleaner of the caliber of CCleaner has is the freeing up of valuable space on your hard drive. Of course, if you choose to utilize CCenhancer as well, even more free space can be freed up.

As mentioned previously CCleaner comes bundled with some useful features in addition to the coveted Cleaner. The registry cleaner is fairly self-explanatory. Simply select Scan For Issues after which your registry will be run through for errors and then select Fix Selected Issues to rectify them. You will be given the option of backing up the registry, in case any changes are made which negatively affect your computer’s performance.

Additional features include an Uninstaller and a Startup Monitor — which allows you to control which programs startup with Windows and the extensions which start with some selected web browsers — as well as allowing you to alter scheduled tasks and context menus. There is also a File Finder, a System Restore point manager and a Drive Wiper which allows for either the wiping of an entire drive or partition or the free space on the selected drive or partition.

It should also be noted that the files deleted by CCleaner can either be deleted securely or normally. Secure file deletion will take longer to complete than normal file deletion. The secure overwrite options are as follows:

• Simple Overwrite (1 pass)
• Advanced Overwrite (3 passes)
• Complex Overwrite (7 passes)
• Very Complex Overwrite (35 passes)

CCleaner also handles cookies intelligently, allowing you to keep cookies from services which you frequently use such as those from Google services as well as Windows Live services to name a few. You can also manually select cookies which you don’t want to be deleted. Select files and folders can also be included or excluded from the cleaning process.

CCleaner is solid all around and the only issue I encountered was that sometimes registry cleaner must be run multiple times before all errors are taken care of. CCleaner is effective and simple and will get the job done and if you haven’t, I urge you to give it a try.

Runner Up

Program Name: BleachBit

Developer: BleachBit

Download Size: 5.9MB

Version Reviewed: 0.9.6

Requires: Windows XP/Vista/7

Discussion

BleachBit is quite the capable privacy cleaner. In addition to being open source, it is both simple and effective.

Bleachbit’s interface is organized into 2 main columns. In the column on the left side, you will find what the author of the software refers to as Cleaners. These are simply the different categories of files which BleachBit is capable of scanning for and deleting. The main, right side column displays information about the files which will be deleted as well as the disk space which will be recovered on deleting these files.

In order to carry out an operation, you must first select all of the Cleaners which you wish to utilize, after which you have the choice of either carrying out a preview which will simply display information about the files to be deleted as well as the disk space to be recovered, or you can skip that step and immediately hit Clean which will permanently delete files associated with a particular Cleaner. You could also choose the more pragmatic route and do a Preview followed by a Clean thus giving you a better idea of what exactly you would be cleaning before doing so and giving yourself the opportunity to make any changes to the proposed actions before carrying them out. BleachBit is capable of identifying and removing the cache, cookies, Internet history, temporary files, and log files for 96 applications including Firefox, Opera, Safari, APT, Google Chrome and Flash.

On deleting files, you have the option to overwrite files once, making sure that they are securely erased. You also have the option of selecting individual files and folders for deletion as well as the option to overwrite the free space on your hard drives and partitions in order to prevent files deleted via the Windows Recycle Bin from being recovered. You can also specify a location which you do not want to be modified by BleacBit. BleachBit even allows you to destroy any evidence that you used the program in the first place. Simply select Shred Settings and Quit from the File drop down menu and the settings utilized while operating the program will be erased.

In terms of functionality, BleachBit is clearly top-notch. Where it falls down is in its user interface and the amount of supported programs; by default CCleaner (without CCenhancer) supports more programs than BleacBit. Of course the user interface not being as “pretty” as that of CCleaner can be considered a very minor issue as functionality is key in any program.

Overall, this is honestly a great program and can fulfill most of your privacy cleaner needs quite easily. It is quite deserving of being the Runner-Up today and is definitely worth checking out.

Honorable Mention 1

Program Name: KCleaner

NOTE: The installer version of KCleaner comes bundled with bloatware during installation, such as Relevant Knowledge. Either download the ‘lite’ version to avoid Relevant Knowledge or the portable version to avoid all bloatware.

Developer: KC Softwares

Download Size: 1.4MB

Version Reviewed: 1.3.0.4.7

Requires: Windows NT/98/Me/2000/XP/2003/Vista/Server 2008/7/8

Discussion

If you are looking for an effective means of erasing your digital footprint, KCleaner is a very capable choice and is worth exploring.

Although its interface is not as polished as that of its counterparts CCleaner and Privazer, navigating around the user interface and carrying out various functions is relatively simple so you will not be left scratching your head trying to figure out how to operate the program.

The program can either be operated in Manual mode or in Automatice mode. In Manual mode, you have the option of carrying out either the Analyse or the Clean functions. You can choose to skip the analysing part and jump. Automatic mode carries out both the scan and cleaning. Other options for scanning and cleaning are also available. These are:

• Analyse, clean and shutdown
• Analyse clean and close
• Analyse, clean and reboot

Several types of data can also be erased with KCleaner. These include, files from the recycle bin, windows installer duplicates, Apple installer cahce, Sun/Java Installer cache, adobe reader installer cache, temporary files, recent files, cookies, temprorary files, Firefox cache, Google updater chache and many more. You can also specify the deletion method which you prefer to use when deleting your sensitive data. The deletion methods are as follows:

• Standard( just regularly deletes files)
• 1 Pass random
• 3 Pass DoD 5220.22-M

KCleaner offers more customizability in terms of adjusting exactly what is to be scanned when compared to Privazer and is unique in that it allows for either the shutdown or rebooting of your PC after analysing and cleaning it as well as closing the program after analysing and cleaning. It is however lacking in options when compared to CCleaner.

KCleaner is effective and flexible and is a solid privacy cleaner.

Honorable Mention 2

Program Name: Privazer

Developer: Goversoft

Download Size: 4.8MB

Version Reviewed: 2.1.1

Requires: Windows XP/Vista/7/8

Discussion

Privazer is a decent privacy cleaner with a well laid out interface, allowing users to easily navigate the program and select exactly the areas which they wish to tend to.

Privazer is easy to use and requires little effort to begin scanning for sensitive information. You first begin the process of cleansing your computer of sensitive information by first selecting the device from which you want to scan and erase such data.

In addition to selecting the device which you wish to scan from, you can select what type of data you want to be erased. The options are as follows:

• Residual traces of old file names
• Residual traces of old files
• Internet activity
• Cookies
• Messengers
• Software use
• Registry
• Windows history
• Memory
• Start_JumpLists
• Indexing
• Temporary files
• Recycle bin
• Other(LOG files, etc.)

After making your desired selections, simply hit scan and you’re on your way.

Like CCleaner, Privazer is also capable of intelligently handling cookies and not touching those cookies related to frequently accessed services such as Windws Live services and Google services.

Like any decent privacy cleaner should, Privazer allows for the secure erasing of the data it deletes. It uses the following methods for secure erasure:

• British HMG IS5, Baseline Standard(1Passes)
• British IS5, Enhance Standard(3 Passes)
• Russian GOST P50739-95(2 Passes)
• German Federal Office for Information Security(3 Passes )
• US Navy NAVSO P-5239-26(3 Passes)
• Canada Communications Security Establishment ITSG-06(3 Passes)
• German VSITR(7 Passes)
• Bruce Schneier’s Algorithm(7 Passes)
• Canadian RCMP TSSIT OPS-II(7 Passes)
• Peter Gutmann’s Algorithm(35 Passes)

Privazer can no doubt hold its own but CCleaner offers far more options to users in terms of areas to clean and is more thorough. It is also quite limited in terms of the browser it supports when compared to both CCleaner and the CCleaner + CCenhancer combination. BleachBit also offers far more categories for cleaning.

Although not as effective as CCleaner, Privazer may come in handy for a quick run through and as mentioned before is easy to use and it is effective at cleaning up the areas which it supports.

Other Alternatives

• … and many more

We clean our rooms and clothes so why not our Macs? But who can waste the entire day digging through folders and files? There are so many places like music, videos, apps and email downloads, and countless more locations on your Mac where junk and clutter accumulates. In 2021 cleaning your Mac is easier than ever. Which is why millions of people download free and low-cost Mac cleaning software.

To start off, we've made a quick comparison chart about the best Mac cleaners for Mac.

A handy cleaner may prove that your Mac is still alive and can actually perform at its best. In this article we’ve brought together some of the best Mac cleaning solutions around to clean, optimize, and maintain Macs that are available in 2021.

Top 12 best cleaners for Mac: Free and premium versions

1. CleanMyMac X

CleanMyMac X takes the first place with good reason — this cleaner combines features of both cleaning software and antimalware tool. Its Smart Scan promises a “nice and thorough scan of your Mac.” It does what it says, detecting junk like user cache files and system logs, checking your Mac for malicious software, and speeding up your MacBook. Looks like, there is a threat in my system, that I need to get rid of:

Frankly speaking, CleanMyMac X is Tesla Roadster among other Mac cleaners. And it does a great job revealing your junk and other clutter, uninstalling unneeded apps and their leftovers, and keeping your Mac’s system clean and optimized. Another pro is that CleanMyMac X is Apple-notarized, which means it’s safe for your Mac. You can download its free version right here.

Price: $39.95
Free version: Available here

2. Disk Doctor

Disk Doctor is developed in the UK and was awarded the 'Mac Gem’ award by MacWorld in 2013. CNET and other tech journalists also praise functionality. As of 2021, it still looks like a useful tool for Mac cleaning that removes junk slowing down and reducing the computing power of your Mac.

Price: $2.99
Free version: N/A

3. Gemini 2

Gemini 2 is the duplicate finder that allows you to free up gigabytes of storage and organize your files. In just a few minutes.

It quickly scans every corner of your Mac and weeds out useless copies. No matter what type of file it is: a photo, music track, or a doc… Gemini will definitely find it. And once the scan is done, you can remove the duplicates in a click. Or review results to make sure nothing important gets deleted.

If you remove something by accident, it takes just a click to put it back. And to make sure things like that never happen again, you can exclude specific files and folders from scan. Try out the free version right here.

The app has seen a major update in 2021 which included a real-time duplicate monitor. This new tool notifies you of duplicates the moment they are created on your Mac.

Price: $19.96
Free version: Available here

4. DaisyDisk

DaisyDisk gives you a visual representation of your Mac folders, making it easy to see what is taking up space and delete the folders you don't need. All you need to do is select a drive, DaisyDisk will scan it, then you can delete everything that is wasting valuable space. It comes with a free and premium version.

Price:$9.99
Free version: Trial version available

5. AppCleaner & Uninstaller

If you only need to uninstall apps on Mac, AppCleaner is a good pick. AppCleaner only removes applications, plugins, and widgets, which are again, small apps. AppCleaner works in a familiar drag & drop mode. Its interface is also clean and easy to understand for a newbie.

After feeding the apps to AppCleaner, you should visit the Leftovers section of the app to erase their remains. Why we place AppCleaner & Uninstaller among free Mac cleaner tools? Because it is 100% free. Whether you will fully clean your Mac using it, is a different question.
AppCleaner & Uninstaller is created by FreeMacSoft, also the makers of LiteIcon, an icon customizer for Mac.
Price: Voluntary donation

6. Smart Mac Care

If you launch Smart Mac Care, it will look hauntingly familiar to other free Mac cleaner apps. Not only features will be called the same, everything up to the fonts, will be identical to some other app you’ve just used. That’s not a minus, though. You can still free up a lot of space with Smart Mac Care.

Smart Mac Care operates by a logic of “scans.” There is a Junk Scan, Malware Scan, Privacy Scan, etc. Just like Mac Booster, Smart Mac Care removes duplicates scattered in various locations on your Mac. There’s also a Memory Optimizer feature that promises to free up RAM on your Mac. In a word, Smart Mac Care resembles every other generic product whose only difference is in packaging. This is supported by the fact that we couldn’t find any credible third-party reviews for this app.

On another skeptical note: to uninstall Smart Mac Care you have to enter your admin password. This is not the case with other Mac cleaners we’ve used.
Price: $56.62 per year
Free version: Demo available

7. Drive Genius

Drive Genius is labeled a “Mac monitoring software.” It’s a whole suite of tools that provide powerful disk diagnostics. It’s hard to list a thing that this software doesn’t do. You can scan for malware, secure-erase files, customize icons — it’s dozens of apps in one body. What makes Drive Genius unique is, probably, its search for corrupted files and inconsistencies on your drive. If your Mac is an old one, keeping it in good health will be easier with Drive Genius.

In a free version, you can use just a fraction of tools, notably a DiskPulse utility. This is an automatic Mac health checker that notifies you before your hard drive fails. Unlike Mac cleaners that merely scan, it is able to repair damage on your disks, which makes it a real deal. Be prepared that hard drive scan may take some time, but the results are worth it. The latest version of Drive Genius released in 2020 adds long-awaited support for macOS Big Sur.

Price: $299 for Professional edition
Free version: Limited Lite edition is available

8. CCleaner

Originally created in 2004 by Piriform, CCleaner comes with a free and professional version, focusing on businesses and business customers. CCleaner is a cross-platform tool, for PCs, Macs, Android, and it has a Cloud, Network and Technician tool, depending on what you need and the platform/software you use.

The premium version comes with a lot more features, including real-time alerts, free updates, and dedicated support. Although created for PCs in the early days, CCleaner does well to identify unwanted files on a Mac, so that users can select and delete the files and folders they don't need to free up space. As a cleaner for Mac, customers are pretty happy with the results of CCleaner.
Price: $19.95
Free version: Available

9. Sensei

The Sensei app is a relatively new app on the market, but it can be another useful tool for your Mac. The Sensei software developers call the app “Pro Mac Cleaner” on their website. I would call it a performance controlling tool.

Sensei presents a detailed picture of how your Mac performs. In the Dashboard, you can find out information about your MacBook, check your CPU’s current temperature, and see how much of your RAM is used. Cooling gives you exact information on your Mac’s fans' speed.

Its Clean option helps to get rid of user cache, logs, large files, etc. The Uninstaller feature allows you to delete apps from your Mac and remove their traces. It doesn’t list pre-installed apps from Apple, such as Safari or Calendar, but it shows every app you have installed on your Mac.

Surely, you can clean up your Mac manually, but using dedicated software will save you tons of time.

Price: $29 per year
Free version: Available

Free Mac cleaners review

The following Mac cleaning apps are either completely free or donation-based. You won’t find any trial limitations here. If you’re looking for a no thrill basic cleanup, these free Mac cleaners might help you.

10. Onyx

OnyX is a french Mac cleaning solution developed by Titanium software. It weighs only 5 MB but that doesn’t mean its capabilities are limited. OnyX is a tool that programmers will have a lot of fun with. With it, you can peek under the hood of your macOS and automate a whole list of jobs, like disk cleanup and cache removal. You can even tweak the color of folders on your Mac, and even make them invisible. Deservedly, it's among the best free Mac cleaners.

OnyX is one of the best Mac cleaners because it cleans many specific under-the-surface files, like inner databases and logs. If you know what is XPC cache is, you’ll probably like this app. But for us, ordinary Mac users who came here for the design and glossy buttons, OnyX will require some learning time.
Those who use OnyX say it is stable and reliable. There is no dedicated customer service (because OnyX is free software), but you shouldn’t be worried. The only likely damage is you accidentally deleting files by yourself.
Price: Free cleaner

11. Clean me

This open-source app that only exists in the form of GitHub download is good enough for cleaning caches and logs. It’s so small its ZIP file weighs only 1.3 MB.
Clean me shows the size of each category of cache files. It analyzes such junk as Application Cache, User Cache, and more temporary files

The developer recommends that you start your cleanup with auto-selected options. Otherwise, you may delete something valuable by accident. So treat it as an analyzer and you’ll be safe.
Price: Free cleaner

Mackeeper Free

12. Native macOS cleaner (Optimize Storage)

Your macOS has its own cleaner of sorts. You’ve probably come across it when checking your occupied disk space.
Go to Apple menu.
Now, click About this Mac > Storage > Manage.

In the sidebar you’ll see the main categories of files on your Mac. Going through Documents is likely to be the most fruitful option. Check the Size and click on Last Accessed. Now you’ve found all those movies gathering dust in your Downloads.
In the same way you can delete some old apps. This feature could be an alternative to a free Mac cleaner; the only problem is it works largely on the surface. You won’t be able to remove System Junk or analyze the grey areas occupied by “Other.”

Frequently Asked Questions

Can’t my Mac clean itself?

Your macOS also has a built-in Mac cleaner, which Apple called Optimized Storage. Though its capabilities are limited, it gives you basic directions on where to start the cleanup. But for a thorough system cleanup and removing malware, you’ll need a dedicated Mac cleaner app.

Can Mac cleaner apps delete my important files?

Typically, best Mac cleaner apps have a protection built-in. They will usually select only those files that are safe for deletion.

Will Mac cleaners slow down my Mac?

Some cleaners try to get into your Login items, thus creating an extra burden on the processor. On a flip side, the reliable Mac cleaner apps might even speed up your Mac. They remove all the outdated junk files giving your Mac an extra boost.

Mac cleaning apps you should avoid

Above we've touched the trusted Mac cleanup solutions but there are many that work on the dark side. Malwarebytes lists Advanced Mac Cleaner Pro and similar tools as unwanted applications. Here are some signs that should warn you against using scam Mac cleaners.
Signs of Mac cleaner scam:

• 'Your Mac is infected' intrusive message
• An app is installed as part of different app
• An app finds 2323 (the number is an example) threats on your Mac
• Mac cleaner redirects your search engine page

Be safe and happy cleaning.