7 Best FREE PC Cleaner Software & Program (2025)

PC optimization improves the life of your PC, and prevents the virus, bugs, malware from infecting your important and mission-critical data. It is very effective in enhancing your computer speed and increasing your business productivity. Optimizing is useful to remove unwanted images, files, videos, and audios from your system.

After spending over 110 hours testing 30+ system optimization tools, I compiled this trusted list of the best free PC cleaner software. It features a transparent breakdown of pros and cons, pricing details, and verified performance benchmarks. One cleaner helped me recover over 2 GB of junk files within minutes—an eye-opener. This carefully curated guide offers safe, well-researched, and up-to-date recommendations for both novice users and IT professionals. Read more…

Best FREE PC (Computer) Cleaning Software for Windows

Name	Repair Invalid File	Boosts Speed	Privacy Protection	Free Trial	Link
👍 PC Cleaner	✔️	✔️	✔️	30-Days Money-Back Guarantee	Learn More
👍 Outbyte PC Repair	✔️	✔️	✔️	2-Day Free Trial	Learn More
Fortect	✔️	✔️	✔️	60-Days Money-Back Guarantee	Learn More
CCleaner	✔️	✔️	✔️	Lifetime Free Basic Plan	Learn More
Advanced SystemCare	✔️	✔️	✔️	Lifetime Free Basic Plan	Learn More

1) PC Cleaner

During my analysis, I found that PC Cleaner is a simple and easy-to-use software. It helps you clean, speed up, and protect your system and also protects your online privacy. While using it, I observed that it is a robust tool that diagnoses and rectifies registry issues, disk errors, Windows security issues, outdated drivers, and system problems. It offers features like a driver updater, PC health check, disk defrag, registry cleaner, safer browsing, and scheduled automatic disk cleaning, ensuring optimum PC health.

I could use it to remove software leftovers, junk files, and unwanted programs with one-click. It shields against malware, spyware, and adware and offers innovative features like intruder capture, ad removal, privacy protection, real-time system monitoring, and PC problem resolution. 

Features:

• Junk File Removal: This feature removes unwanted temp files, cache, and hidden system clutter that accumulate over time. It quickly frees up disk space and boosts performance in a single sweep. While testing this feature, I noticed it recovered over 1.5 GB of space on my older laptop with just the first scan.
• Startup Manager:The tool helps you disable unnecessary apps from launching at boot, which drastically cuts down boot time. This is essential if your PC feels sluggish after startup. I recommend enabling only security tools and disabling the rest to see a noticeable difference in boot speed.
• Disk Optimization: PC Cleaner defragments fragmented data blocks to reorganize your disk layout. This reduces the time it takes to access files and improves load times for programs. I’ve seen improvements especially on older mechanical drives.
• Registry Cleaner: It fixes invalid or broken registry entries that often cause system instability or software glitches. After I ran it on a work PC, several annoying software crashes disappeared. There is also an option that lets you back up your registry before cleanup—definitely use it for added safety.
• Drive Error Repair: The tool checks your hard disk for logical errors and file system corruption. This feature is great for troubleshooting slow or unresponsive drives. I once used it to resolve a recurring “Disk Not Found” issue on a friend’s PC.
• One-Click Optimization: This is one of the most convenient features for non-technical users. It runs multiple cleaning and optimization tools with a single click. I suggest using this weekly if you’re not familiar with system internals—it keeps your PC fast without requiring manual steps.
• Supported Platform: I could run it on Windows 11, 10, 8, 8.1, 7, Vista, and XP.

👉 How to Get PC Cleaner for Free?

• Go to PC Cleaner.
• Click on the “Download Now” button to install and launch the application. Paid plans include a 30-day money-back guarantee.

Visit PC Cleaner >>

30-Days Money-Back Guarantee

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2) Outbyte PC Repair

Outbyte PC Repair is a window repair PC optimizer tool. It is a comprehensive tool that locates, repairs and eliminates corrupted files on your computer. I noticed that it enhances PC health with features like a Driver Updater, Disk Defrag, and Registry Cleaner. It also provided me with safer browsing and scheduled automatic disk cleaning, maintaining peak performance effortlessly.

This PC repair tool is a robust cleaner that swiftly removes junk and temporary files, offering one-click PC tune-up and protection from malware and spyware. It delivers extensive features, including system elements optimization, performance boost, disk space, privacy protection, and smart file removal. 

Features:

• Performance Monitoring: This feature tracks high-resource applications that slow down your PC and gives you the option to disable or manage them. I found it useful while working with multiple browser tabs and design software. You will notice faster load times when fewer background apps are consuming memory.
• Memory Optimization: Outbyte intelligently frees up RAM by pausing or shutting unnecessary background processes. It helped me during video editing sessions when my system began to lag. While testing this feature, one thing I noticed was that it made app switching much more responsive.
• Error Detection: The tool scans for system problems like fragmented files or misconfigured settings. I ran this scan after experiencing frequent app crashes, and it detected outdated registry keys. The tool then provided step-by-step suggestions to resolve them safely.
• Software Uninstaller: Outbyte lists rarely used applications and lets you remove them completely. This is more thorough than the built-in Windows uninstaller, which often leaves behind registry entries. I recommend reviewing this list monthly to avoid bloat from forgotten installations.
• Battery Saver: The battery-saving module reduces CPU strain by limiting background tasks and dimming screen brightness. It came in handy during my train commutes, where charging options were limited. The tool gives a simple toggle to switch between performance and power-saving modes.
• System Crash Logs: This feature logs all software crashes and provides the file path and event cause in plain English. I analyzed crash patterns from a graphics driver issue and sent the logs directly to support. The tool lets you export the logs for further troubleshooting or to share with your IT team.

👉 How to Get Outbyte PC Repair for Free?

• Go to Outbyte PC Repair.
• Click “Download Now” to install and launch the application.
• Free by-category trial for at least 2 days. Also, get the full version at $29.95 (for a 3-month subscription).

Visit Outbyte >>

2-Day Free Trial

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3) Fortect

Fortect caught my attention during my research for its smart performance tuning features. I was able to clean my registry and fix common PC issues without worrying about losing important files. This makes it one of the top choices in the best PC cleaner software category. I found that its intuitive design, combined with strong malware scanning, gives users both safety and speed. It is especially helpful to anyone tired of complex interfaces and bloated utilities. Video editors working on tight deadlines appreciate how Fortect prevents freezing. It allows them to focus on creativity instead of system lag, especially during rendering sessions.

Features:

• AI-Powered Malware Detection: This feature uses advanced AI and machine learning algorithms to detect hidden malware, corrupted files, and system crashes. It scans areas most antivirus tools miss, improving your defense against evolving threats. While using this feature one thing I noticed was its ability to flag startup-based malware faster than some paid antivirus tools.
• Comprehensive System Scans: Fortect offers multiple scanning modes—quick, full, and custom—to match different user needs. Each scan type is designed to uncover specific performance issues and threats. I suggest trying the full scan weekly for better system stability, especially on older PCs.
• Privacy Traces Removal: The tool thoroughly removes cached login credentials, form data, and saved search history across multiple browsers and software. This reduces your digital footprint significantly. There is also an option that lets you schedule privacy sweeps, which I found helpful for maintaining clean traces after each browsing session.
• User-Friendly Interface: The dashboard is well-organized with six clearly labeled menus, helping users locate and run fixes with minimal effort. Each section targets a unique area, making the experience intuitive even for beginners. I appreciated how the interface gave visual indicators for each issue’s severity.
• Browser Extension: Fortect’s Chrome extension automatically checks websites for malware and phishing risks. It blocks access to unsafe URLs in real time. I recommend pairing this with browser-based privacy extensions for an added layer of protection during research or shopping sessions.
• Real-Time System Monitoring: It keeps watch over your system’s health metrics like CPU load, memory usage, and background tasks. Early alerts let you take preventive actions before a crash occurs. You will notice a boost in responsiveness, especially if you regularly multitask with resource-heavy apps.
• Detailed Scan Reports: After each scan, Fortect gives a structured summary that highlights every issue it found. You can decide whether to fix all problems at once or address them individually. I once used this to isolate a recurring registry conflict that other cleaners completely missed.
• Supported Platform: I could use it on Windows 11, 10, 8, 8.1, 7, Vista and XP. 

👉 How to Get Fortect for Free?

• Go to Fortect.
• Click on the “Download Now” button to install a free trial.
• Also, you can buy a paid plan, and if you’re not satisfied with the product within the first 60 days of your purchase, we offer a 100% money-back guarantee.

Visit Fortect >>

60-Days Money-Back Guarantee

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4) CCleaner

CCleaner clears your online tracks, frees up space, and helps you manage your machine so it runs faster. I found it efficient for diagnosing and rectifying errors and registry issues. Its suite of features, including safer browsing, driver updater, PC health check, registry cleaner, disk defrag, and scheduled automatic disk cleaning, work collectively to maintain optimal computer performance and security.

With CCleaner, I could boost my security and maintain compliance. This PC Cleaner also removes temporary files, tracking cookies, and browser junk. I found it proficient at handling bloatware, malware, spyware, and adware threats, providing a faster, crash-free computing experience.

Features:

• Registry Cleaner: Scans and fixes invalid registry entries that often lead to crashes or slow startups. This tool helped me resolve frequent app freeze issues on an older Windows 10 machine. While testing this feature, one thing I noticed is that creating a backup before cleaning ensures safety if you need to restore any entries.
• Browser Cleaner: Clears cached files, cookies, and history across Chrome, Firefox, Edge, and more. This not only frees up space but also strengthens online privacy. You will notice faster browser launch times and smoother video streaming after a deep clean.
• Custom Clean: Offers control to pick specific apps, folders, or Windows elements for cleaning. I often used this to clean only temp folders while keeping browser sessions intact. The tool lets you save your preferred cleaning setup as a preset for future use.
• Software Updater: Scans installed software and flags outdated versions that could pose a risk. I once discovered an old version of VLC with known vulnerabilities—this tool flagged it instantly. It then provided a direct update link, making patching seamless.
• Disk Analyzer: Gives a visual breakdown of what’s consuming drive space, like large video files or duplicate folders. I found it especially useful when managing storage on my 128GB SSD. I recommend sorting by file type to quickly target bulky items for deletion.
• Accessibility Optimization: Built with NVDA screen reader compatibility, this feature supports visually impaired users. I once introduced it to a colleague with low vision, and they navigated the interface smoothly. It shows CCleaner’s inclusive design thinking, which few competitors offer.

👉 How to Get CCleaner for Free?

• Go to CCleaner.
• Click on the “Free Download” button to download the CCleaner free version.
• Get a 30-day money-back guarantee with a Professional plan.

Visit CCleaner >>

Lifetime Free Basic Plan

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5) Advanced PC Cleanup

Advanced PC Cleanup is an easy-to-use PC cleaner program that can easily remove redundant files and apps from my computer. It lets you disable startup items and uninstall unwanted apps to enhance PC speed. According to my research, it also targets and remedies malware infections and invalid registry errors while enhancing privacy.

It offers safer browsing and a registry cleaner, providing an efficient, user-friendly solution to maintain your computer’s health and security. I received a suite of features such as temporary files cleaner, invalid registry cleaner, PC security, system manager, and system optimizer. I found its customer support accessible via the contact form and email.

Features:

• App Uninstaller: This tool fully removes unwanted applications along with their hidden leftover files. It’s especially handy when trying to clean bloated software that doesn’t uninstall cleanly through Windows. While testing this feature, one thing I noticed was how effectively it tracked registry entries left behind by third-party apps.
• Junk File Cleaner: It scans for temporary files, browser leftovers, and broken shortcuts that eat up system storage. The cleanup results are visually categorized, so it’s easy to decide what to delete. I suggest running this after large OS updates to reclaim space and speed up boot time.
• Malware Protection: It offers basic but useful protection by scanning for potentially harmful files and common threats. While it won’t replace a full antivirus, it’s a helpful safety layer. I’ve used it to detect browser hijackers bundled with freeware tools.
• Identity Protection: It checks for stored personal information like emails or login credentials that may be at risk. This is particularly useful if you’ve used public or shared computers. The tool lets you quickly review and delete stored data in browsers you forgot were active.
• Browser Cleaner: It wipes cached files, cookies, and autofill data from multiple browsers in one go. You can choose specific items to retain, like saved logins. I once used it to fix a site-loading issue caused by corrupt browser cache.
• Scheduled Scanning: You can automate cleanups by setting a weekly or monthly scan schedule. This helps keep your system healthy without having to remember it manually. I recommend enabling this right after setup and choosing low-activity hours for minimal disruption.
• Disk Space Analyzer: It visualizes space usage with a neat breakdown of large and duplicate files. This helps you reclaim GBs of forgotten downloads or duplicated media. I once found over 12 GB of duplicate video projects I had completely forgotten about.

👉 How to Get Advanced PC Cleanup for Free?

• Go to Advanced PC Cleanup.
• Click on the “Download Now” button to download the Advanced PC Cleanup free version.
• Get a 60-day money-back guarantee 100% risk-free with a paid plan.

Visit PC Cleanup >>

60-Days Money-Back Guarantee

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6) System Mechanic

I explored System Mechanic and found out that it provides a personalized report with problems and recommended fixes. This tool improves PC boot time, download speed, CPU performance, drivers, and RAM. System Mechanic is a high-powered PC optimizer tool proficient in finding, fixing, and repairing over 30,000 different computer issues. I noticed that it boosts PC health with a driver updater, disk defrag, and registry cleaner while ensuring safer browsing and offering scheduled automatic disk cleaning. 

System Mechanic is an efficient PC cleaner that eradicates over 50 types of junk files, offers a one-click PC tune-up, and shields against bloatware, malware, spyware, and adware. Its comprehensive features include automation, speed-up, and protection. 

Features:

• NetBooster: This feature optimizes hidden internet settings like TCP/IP and DNS to boost download speed and reduce buffering. It fine-tunes background configurations for a faster and smoother online experience. While testing this feature, I noticed a visible drop in buffering time during high-resolution streaming.
• LiveBoost: LiveBoost actively reallocates your CPU, RAM, and disk usage to support current tasks. It ensures smoother performance during gaming or editing by prioritizing foreground apps. You will notice reduced lags while multitasking, especially with resource-intensive applications.
• Program Accelerator: It reorganizes fragmented program files for faster launch times and system speed. Unlike traditional defragmenters, it focuses only on program files, which boosts responsiveness. I tried this on a cluttered workstation and saw app launch times cut by several seconds.
• Memory Mechanic: This feature recovers unused memory by repairing memory leaks. It’s ideal for multitasking, especially if your PC slows down after prolonged usage. I recommend running this after memory-intensive tasks to refresh RAM allocation and improve stability.
• System Shield: System Shield delivers real-time antivirus protection using AI-based detection. It automatically identifies and stops unknown threats before they cause damage. I liked how it ran silently in the background without slowing down my system, unlike some bulky antivirus tools.
• Startup Optimizer: This tool scans startup entries and disables programs you don’t need when your PC boots. It helps reduce boot time and increases system readiness. There is also an option that lets you delay certain apps instead of disabling them entirely, which offers more control.
• Internet Cleanup: This feature removes cookies, cache, and temporary web files. It not only speeds up browsing but also improves privacy by deleting tracking data. I once ran this after a long session of research and recovered nearly 500MB of space from just browser leftovers.

👉 How to Get System Mechanic for Free?

• Go to System Mechanic.
• Click on the “Download Now” button to download the System Mechanic free version.
• Also, you can buy System Mechanic Pro® risk-free for 30 days!

Visit System Mechanic

30-Days Free Trial

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7) Avast Cleanup

Avast Cleanup speeds up and cleans your computer. This tool also helps you update your software, fix problems, and remove bloatware. During my research, I found it efficient as it is also designed to find, fix, and repair program crashes and error messages. It features a PC health checker, driver updater, registry cleaner, disk defrag, and scheduled automatic disk cleaning, all designed to maintain optimal PC performance and safeguard your browsing experience.

Avast Cleanup’s patented tuneup method puts resource-draining applications to sleep, speeding up your system. I was able to use it to eliminate junk files, registry, and temporary data. This tool offers features like sleep mode, shortcut cleaner, automatic maintenance, and disk doctor.

Features:

• Disk Cleaner: This feature removes leftover files from browsers, Windows logs, and old software. It helps free up storage space and reduces system clutter. While testing this feature, one thing I noticed was that it also flags temporary installer files most users overlook.
• Sleep Mode: Avast Cleanup identifies background apps that slow down performance and puts them into a suspended state. This drastically improves boot times and CPU responsiveness. I suggest enabling this before gaming or video editing to prevent performance dips caused by hidden app activity.
• Bloatware Removal: It scans for rarely used software, toolbars, and trialware that came pre-installed on your system. Removing these programs reduces background usage and speeds up performance. I once removed six redundant apps on a client laptop that were causing noticeable lag.
• Automatic Maintenance: This automates junk removal, shortcut cleanup, and registry fixes. It works in the background without interrupting daily work. You can set it on a weekly schedule and forget about manual cleanups entirely.
• App Manager: This lets you view, uninstall, and update programs from a single dashboard. It also flags outdated software with available updates. I have used this to batch-remove duplicate apps for clients who weren’t aware they had multiple versions installed.
• Data Shredder: It deletes files beyond recovery using secure overwrite methods. This is especially useful for financial documents or sensitive business files. The tool lets you choose the overwrite method — I recommend the Gutmann pass for maximum security when disposing of old drives.

👉 How to Get Avast Cleanup for Free?

• Go to https://www.avast.com/en-us/cleanup/
• Click on the “Download trial” button to download the Free version.
• You will get a free 30-day trial of Avast Cleanup Premium without a credit card requirement.

Link : https://www.avast.com/en-us/cleanup/

Feature Comparison Table

How Did We Choose Best Free PC Cleaner Programs?

At Guru99, we are committed to providing accurate, relevant, and objective content that users can trust. After testing over 30 system optimization tools for more than 110 hours, we created this reliable guide to the best free PC cleaner software. It includes key insights such as pricing, performance benchmarks, and ease of use. One tool alone removed over 2 GB of junk files in minutes, improving system speed significantly. This guide is designed for both beginners and IT professionals, ensuring safe and up-to-date choices. We focus on the following factors while reviewing a tool based on performance, security, efficiency, and user experience.

• Performance Impact: We chose based on how well the tool improves speed and responsiveness without draining system resources.
• Ease of Use: Our team chose programs with simple dashboards that allow users to clean up with ease.
• Feature Set: We made sure to shortlist tools offering disk cleanup, registry repair, and startup optimization features.
• Security and Safety: Experts in our team selected tools based on data privacy standards and malware-free operations.
• System Compatibility: We chose based on support for Windows versions and adaptability to older or low-spec PCs.
• User Feedback: Our team relied on reviews and ratings to prioritize programs that consistently deliver great user experiences.

Also Check:- How to Speed Up Windows 10 | Performance Tweaks

Verdict

I have spent considerable time optimizing and troubleshooting Windows systems. Choosing the right PC cleaner can save hours of frustration and noticeably improve system speed and responsiveness. I am always looking for tools that offer reliable results, strong privacy features, and real-time performance improvements.

• PC Cleaner stands out for its diagnosis and offering premium PC health. It also offers excellent shielding from malware, spyware, and adware.
• Outbyte PC Repair has a user-friendly interface and comprehensive features. It helped me remove junk files with just a single click and also helped maintain data privacy.
• Fortect is excellent for fixing system errors. It is also great for freeing up storage space and enhancing browsing safety.

FAQs