14 Best Free Registry Cleaner For Windows

14 Best Free Registry Cleaner For Windows 10, 8 & 7

  1. iolo System Mechanic
  2. Restoro
  3. Outbyte PC Repair
  4. Defencebyte
  5. Advanced SystemCare
  6. CCleaner
  7. Auslogics Registry Cleaner
  8. Wise Registry Cleaner
  9. JetClean
  10. JV16PowerTools
  11. AML Cleaner
  12. Easy Cleaner
  13. WinUtilities
  14. Eusing Cleaner URL
  15. Glarysoft Registry Repair

Comparison Of Top 5 PC Registry Cleaner Software

Tool Name OS File Size Our Ratings Licensing Features
iolo System Mechanic


Windows® 10, 8, 8.1, 7 (XP/Vista up to v16.0.0.10) 32.55 MB Star_rating_5_of_5 Premium licensing at $14.98. Boost your computer’s speed, power, and stability with advanced PC tune-up. System Mechanic provides the essential optimization toolset to clean hard drive clutter, repair your registry, defragment drives and memory, and optimize system and internet settings.

Restoro Logo

Windows 911 KB Star_rating_5_of_5 Free trial & License price starts at $29.95 Optimize Windows Registry, Hardware Analysis, OS restoration, etc.
Outbyte PC Repair

Outbyte Logo

Windows 10, 8, 7, and Mac. 16.2 MB Star_rating_5_of_5 Free trial & License for $29.95. Can resolve 100+ common PC issues, clears disk space, real-time boost, real-time privacy, etc.

Defencebyte Logo

Windows 4.9 MB Star_rating_5_of_5 1-year license: $38.95 Empty registry keys, erase invalid paths, delete useless file extensions, etc.
Advanced SystemCare

IObit Logo

Windows 10, 8, 7, Vista, XP 45.1 MB Star_rating_4.5_of_5 Freeware and $29.99 version Ideal for non tech-savvy people, automatic backups, single click scan and repair.


Windows XP, Vista, 7, 8.1, 10, MacOS 10.6 to 10.11 16 MB Star_rating_5_of_5 Freemium with Premium $29.95 and $59.95 versions Built for many types of registry errors, ideal for beginners, optional backup, tools for PC maintenance
Auslogics Registry Cleaner

Auslogics Registry Cleaner

Windows XP, Vista, 7, 8.1, 10 12 MB Star_rating_4_of_5 Freeware Effective registry cleaner for windows, automatic backup, displays the registry errors’ colored severity rating, great at cleaning specific registries
Wise Registry Cleaner

Wise Registry Cleaner

Windows XP, Vista, Windows 7/8/10 3.10 MB Star_rating_3.5_of_5 Freeware and $29.95 premium version Automatic backup, three registry scan levels, easy to use, automatic and scheduled registry cleaning


14 Best Windows Registry Cleaner:

#1) iolo System Mechanic

Iolo System Mechanic

iolo System Mechanic is a tool for advanced PC tune-up. It is a set of tools to clean hard drive clutter, repair registry, defragment drives & memory, and for optimizing system and internet settings. It uses patented performance technology. It can fix the frustrating errors, crashes, and freezes.

iolo System Mechanic can give you up to 89% of a faster startup and 39% faster downloads. Similarly, you will get improved CPU speed and improved graphics.


  • iolo System Mechanic can defrag, compact, optimize, and back up the system registry.
  • It has enhanced Program Accelerator, Startup Optimizer, and Net Booster.
  • There are two scan modes Quick Scan and Deep Scan.
  • It provides enhanced active care and a real-time boost.
  • It can clean up to 50 types of junk files.
  • It will clear the internet and chat history, clutter, and cache.


  • It supports only the Windows platform.

File size: 32.55 MB

Compatible Operating Systems: Windows® 10, 8, 8.1, 7 (XP/Vista up to v16.0.0.10).

Verdict: iolo System Mechanic is a tool that will boost your computer’s speed, power, and stability. It has a new modernized Interface with a simplified features menu and faster loading. It will restore the maximum speed, power, and stability.

Also read =>> iolo System Mechanic Review


  • System Mechanic: $49.95.
  • System Mechanic Pro: $69.95
  • System Mechanic Ultimate Defense: $79.95

#2) Restoro


Restoro is a complete system solution for securely and safely repairing of PC.  It can optimize Windows PC. It performs hardware analysis and scanning & assessment of PC. It will free up the disk space and restore the max performance of the PC.


  • Restoro has features for optimizing registry and hardware repair.
  • It can restore and replace DLL files.
  • It provides the features of virus removal, repairing of virus damage, and virus protection.


  • No such cons to mention.

File Size: 911 KB

Compatible Operating Systems:  Windows XP, Vista, 7 (32/64 bit), 8 (32/64 bit), 8.1 (32/64 bit), and 10 (32/64 bit).

Verdict: Restoro is a tool to repair your Windows PC. It offers free support and free manual repair. It can protect from malware and restore peak performance. Damaged and missing Windows files will be replaced by Restoro. It will detect threatening apps in real-time.


  • Free trial: Available to download
  • One License with one-time repair: $29.95
  • Unlimited Use & 1 Year support: $29.95
  • 3 Licenses with unlimited use for 1 year: $39.95

#3) Outbyte PC Repair


Outbyte PC Repair tool has various features and functionalities to identify and resolve performance issues. This comprehensive PC repair tool can be a solution for different system issues such as cleaning up the drive, improving security, etc. It identifies the temporary and cached files and removes those files from the hard-drive.

Outbyte offers the facility of real-time privacy that will let you disable Windows telemetry features with automatic removal of browser history and cookies.


  • Outbyte is capable of solving 100+ common PC issues.
  • It provides a quick overview of the PC performance through the details like CPU load and speed, etc.
  • It has features of Smart File Removal that deletes the file securely from Recycle Bin.
  • Outbyte PC Repair solution contains a lightweight scanner to find vulnerabilities.


  • Outbyte doesn’t offer any free plan.

File Size: 16.2 MB

Compatible Operating System: Windows 10, 8, and 7 and Mac.

Verdict: Outbyte is a comprehensive computer repair tool with some advanced features like real-time privacy and real-time boost. It will optimize the performance of your PC, at the same time improves security and privacy.


  • Free trial for 7 days.
  • Full Version for $29.95

#4) Defencebyte


Defencebyte offers the products like Anti-Ransomware, Privacy Shield, and Computer Optimizer, etc. Its computer optimizer is an outstanding registry cleaner with comprehensive technologies for examining computer glitches and registry malfunctions.

It can block unwanted URLs. Defencebyte will give you a faster & more stable PC, quicker startup, more free pace, and better privacy. It provides additional privacy by removing the browser’s temporary files.


  • Defencebyte has functions to empty registry keys, erase uninstalled entries, and remove invalid paths or programs.
  • It will let you schedule the scan to clean the system regularly.
  • It can help you with deleting useless file extensions and erasing invalid paths.
  • Non-existent shared dlls can be eradicated by this tool.
  • It also works as a task or app manager as it has the ability to trace the CPU usage.


  • It is compatible with Windows OS only.
  • As per reviews, the application doesn’t ask for permission while deleting the data or files.

File Size: 4.9 MB

Compatible Operating System: Windows XP, Windows Vista, Windows 7, Windows 8/8.1, and Windows 10.

Verdict: Defencebyte PC optimization software helps with cleaning up the registry and deleting unwanted files & software. It improves the resource management of PC on the whole. It is easy to use.


  • A free trial of 30 days, available to download.
  • The price starts at $38.95 for a 1-year license for one system.

#5) Advanced SystemCare

Advanced SystemCare

Advanced SystemCare is a free-to-use registry cleaner with an attractive user interface and comes with a range of tools that not only clean your computer but also make it fast and secure. Like CCleaner, this cleaner is easy to use, which makes it ideal for beginners or non-tech-savvy people.

Enjoy the exclusive offer of a 50% discount from Advanced SystemCare.


  • Ideal for non-tech-savvy people
  • Automatic backups
  • Single-click scans and repair


  • Automatically installs unwanted programs
  • Has an overwhelming number of features

File Size: 45.1 MB

Compatible Operating System (OS): Windows 10, 8, 7, Vista, XP

Verdict: If you’re looking for software with a host of tools that can clean your computer and increase its speed, then the Advanced SystemCare registry cleaner is a good choice. You can get a 50% discount from Advanced SystemCare using the link given below.

However, if you don’t want to install unwanted programs that the cleaner software automatically installs, then you can look for other options. Another reason for not installing this cleaner on your computer is the limited space on your hard disk.


  • Freeware
  • $29.99 version

#6) CCleaner

Avail 20% Discount From CCleaner


CCleaner is an easy-to-use tool and the best choice for beginners or non-tech-savvy users. Free to download, this tool makes it easy to clean the registry of your operating system. It does this by allowing users to not only manage individual files but also skip and delete them.


  • Built for many types of registry errors
  • Ideal for beginners
  • Optional backup
  • Tools for PC maintenance


  • Other programs are installed by the cleaner unless they are expressly denied permission
  • Freeware available only to home users
  • Confusing download page

File Size: 16 MB

Compatible Operating System (OS): Windows XP, Vista, 7, 8.1, 10,

Verdict: If you are looking for ease of use, then CCleaner is probably the best registry cleaner for you. It is also useful for fixing different types of registry errors. However, if you’re worried about your disk space, then you’re better off looking at the other tools available.


  • Freeware
  • Premium $29.95 and $59.95 versions

#7) Auslogics Registry Cleaner

Auslogics Registry Cleaner

Auslogics is another good software for cleaning your Windows registry. Considered by many as the best registry cleaning tool for Windows, Auslogics can help overcome system and stability issues with the computer. A key feature of this tool is the colored severity rating that highlights the registry area that requires the most attention.


  • Effective cleaner for Windows
  • Automatic backup
  • Displays the registry error’s colored severity rating
  • Great at cleaning specific registries


  • Install other programs during setup
  • Optional/additional features cost a fee

File Size: 12 MB

Compatible Operating System (OS): Windows XP, Vista, 7, 8.1, 10

Verdict: If your operating system is Windows, then the Auslogics cleaner should be on top of your priority list. This is because it is known to resolve system and stability issues with the Windows OS efficiently. The only reason why you would want to avoid it is if you are bothered by unwanted programs getting installed automatically during setup.

Price: Freeware

Website: Auslogics 

#8) Wise Registry Cleaner

Wise Registry Cleaner

Widely considered as the best cleaner alongside CCleaner, the Wise Cleaner provides extremely fast registry cleaning, and automatic/scheduled scans. Additionally, it features various scan modes and is said to be one of the safest tools available today.


  • Automatic backup
  • Three registry scan levels
  • Easy to use
  • Automatic and scheduled registry cleaning


  • Needs rebooting
  • Attempts to install other programs during setup

File Size: 3.10 MB

Compatible Operating System (OS): Windows XP, Vista, Windows 7/8/10

Verdict: If you’re looking for software that can optimize your operating system for improved future performance, then the Wise Cleaner is a great option. You also don’t need to worry about disk space since the file size of this cleaner is only 3.10 MB.

However, you may want to avoid it if you don’t want unsolicited programs on your computer. Another reason to avoid it is if you don’t want to reboot the registry cleaner.


  • Freeware
  • $29.95 premium version

Website: Wise Registry Cleaner

#9) Jet Clean

Jet Clean

Jet Clean is an extremely fast cleaner that can scan the entire registry within a few seconds. Another key feature of this tool is its well-designed user interface. It is a single-click interface that allows you to clean your system.


  • Easy-to-access backup
  • Great options for filtering
  • Extremely fast and dedicated cleaner tool


  • Too many cookies
  • Attempts to install toolbar during setup

File Size: 3 MB

Compatible Operating System (OS): Windows XP, Vista, 7, 8.1, 10

Verdict: If you’re looking for a registry cleaner that can quickly clean the registry of your operating system, then Jet Clean is a good choice. You can easily access backup on the cleaner, and it has great options for filtering. Also, the file size of the cleaner is only 3 MB.

However, you may want to avoid this tool if you are bothered by the number of cookies that comes as a default feature with this cleaner.

Price: Freeware

Website: Jet Clean

#10) JV16PowerTools


JV16 PowerTools is a free-to-use, highly customizable registry cleaner that can perform extremely fast registry cleaning. Additionally, it does not attempt to install unwanted programs during setup as is done by most other cleaners, which is a real plus.


  • A simple user interface
  • Fast registry cleaning
  • Automatic backup
  • No attempt to automatically install toolbar or unwanted programs


  • Not very user-friendly
  • An overwhelming number of options that can cause issues

File Size: 8.54 MB

Compatible Operating System (OS): Windows 10, 8, 7, Vista, and XP

Verdict: A good option if you want a PC cleaner that can quickly perform registry cleaning on your computer. Other things that make it useful are automatic backup and avoiding toolbar or unwanted programs getting installed automatically. Not a good option if you are looking for user-friendly software that does not have an overwhelming number of features.

Price: Freeware

Website: JV16PowerTools

#11) Easy Cleaner


One of the oldest registry cleaners available today, Easy Cleaner has a very old-looking user-interface. However, it gets the job done as effectively as any other cleaner out there. Another key feature of this tool is that it is available as a portable tool.


  • Easy-to-use interface
  • Automatic backups
  • A range of setting options and tools


  • Slower registry cleaning than other cleaners
  • Lack of scheduling options

File Size: 2.82 MB

Compatible Operating System (OS): Windows XP, 2000, NT, ME, 98, and 95

Verdict: If you’re using older versions of Windows, then Easy Cleaner would be a good option for you. It has an easy-to-use interface and can automatically back up the registry. However, you would want to avoid it if you’re looking for fast registry cleaning and scheduling options.

Price: Freeware

Website: Easy Cleaner

Some Additional Registry Cleaner Tools Worth Considering:

#12) AML Cleaner

AML Registry Cleaner

A tool with a simple and easy-to-use interface, the AML cleaner can perform super-fast registry cleaning to fix any registry issues in Windows. Additionally, it comes with options for backup and system restore.

Website: AML Cleaner

#13) WinUtilities


WinUtilities is an all-in-one registry cleaner that allows you to clean and optimize your PC. It offers fast and efficient scans and comes with a ‘Rescue’ option for backing-up and restoring registries.


#14) Eusing Registry Cleaner

Eusing Registry Cleaner

A tool with a user-friendly interface, the Eusing cleaner performs quick scans for obsolete or invalid information. Additionally, it backs up your registry automatically.

Website URL: Eusing Cleaner

#15) Glarysoft Registry Repair

Glarysoft Registry Repair

A cleaner that provides safe and efficient registry scans, the Glarysoft registry cleaner features an incredibly intelligent scan engine and backup/restore capabilities.

Website: Glarysoft Registry Repair

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