List of Free and Open Source Optimizers And Diagnostics

Here is our list of Free and Open Source Optimizers And Diagnostics. Please contact us if you know of a program that should be on this page. Boffin supports open source software. If you have an open source project, we may consider making a small donation to your project. To be considered, please get in touch via the contact page.

Glary Utilities

Glary Utilities is a free optimization and diagnostics tool that scans computers for issues, protects privacy and provides solutions to glitches. It enhances a computer's speed allowing it to perform better. Its interface comes in over 20 languages making it a favorite to over 40 million users worldwide. It works on Windows 7, 8, 2000, Vista and XP 32 bit or 64 bit versions.


FCleaner is an easy to use freeware that safely cleans and optimizes computers running on previous Windows versions XP, 7 and Vista. Its unique features include an uninstaller to manage software and a Startup Manager to control applications that run on startup. FCleaner supports over 60 languages including Chinese, Italian, English and Spanish.

SKTools Lite

SKTools Lite is a free diagnostic application specifically for pocket computers or smartphones running on Windows Mobile 5 (WM5) and WM6 Standard. It optimizes the device's system performance making it cleaner and run faster. It deletes temporary files, bad registry keys, bad links, shortcuts and cached folders. It can also free up RAM space and remove PIM information.

Mz 7 Optimizer 1.1.0

Mz 7 Optimizer 1.1.0 is made as a performance booster for Windows 7 and 8 computers. What's unique about this application is its ability to personalize a Windows core system and tweak processes during startup and shutdown. It also provides performance, internet, customization and security tweaks. It has an Auto Optimization Mode for beginners and less computer savvy users. The Game Mode which stops unwanted processes that may cause delays is perfect for playing games.

WinUtilities Free Edition

WinUtilities Free Edition is both an optimizer cum diagnostics software and data recovery software in one. It boasts of 6 modules designed to diagnose and optimize a computer's performance, fix errors and save up storage space. It has over 20 tools available to help wipe off invalid registry entries, defragment disk drives, uninstall unwanted programs, back up Windows registry and schedule tasks to run automatically and so much more.


SlimCleaner boasts as the first free optimizer and diagnostic software to utilize a cloud-based computer diagnosis using firsthand accounts and information from an online community. It can clean unwanted files that eat up space and customize start up processes enabling computers to perform faster. It can also defragment disk space, uninstall unwanted applications and securely wipe off or remove sensitive files from hard drives.