FCleaner is a freeware all-in-one Windows disk and registry cleaning and optimization tool. It removes unused files and invalid registry entries that are eating up your disk space and slowing your system down, tweaks your system and allows your system to run faster. FCleaner can protect your privacy such as internet history, the cookies that websites leave behind. You can erase all the traces of your online activities in just one. Also features a startup manager and software uninstaller.