Iolo System Mechanic removes junk files and unwanted apps, blocks bloatware and unwanted auto-run settings, clears out RAM and wipes various logs, browser histories and caches.
IObit Advanced SystemCare comes in two forms: a free edition version that covers basic house cleaning, and a Pro version that adds internet speed-boosting, real-time optimization, privacy protection, deep registry cleaning and 24/7 technical support.
Piriform CCleaner has been around for a long time, and part of the reason for its ongoing popularity is that it cleans the parts of your PC that many other free system optimization tools don't.
Ashampoo WinOptimizer 2018's biggest selling point is its flexibility – you can scan for junk files, broken registry entries and browser cookies with a single click, and erase them all with one more.
Razer Cortex: Game Booster - This free PC optimization software suspends unnecessary system processes, clears out memory and defrags your system to get the very best game performance possible.
This chrome app is a navigation app for you to download the top best system optimization software and speed up your computer for free.