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PrimoCache - PrimoCache Overview - a supplementary software caching scheme to improve the system performance
Forget Me Not - Download Forget Me Not - Forget cookies & other data for Firefox. Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.
HDDTurbo - HDDTurbo mainly using free RAM to accelerate hard disk read and write operations.
Clear Cache - Clear browser cache with a single click or via the F9 key.
PCSwift - PCSwift is software that improves the performance of your computer as well as your internet connection with a single click.
Clear Console - Clear Console addon provides options to clear your cookies, cache, history, html5/local storage...