CCleaner 4.00 free system optimizer

CCleaner 4.00 will remove unwanted information, temporary files, your browsing history, huge log files and even the settings left behind by previously installed software. It also includes a Registry cleaner and optimiser, which will find and remove entries and streamline the database.

After installing and removing software, then browsing the Internet for a few months, all sorts of temporary information is left strewn across your hard drive. Worse, the Registry, which is a database of information about your computer, is left with erroneous entries that point to long-deleted directories, link filetypes to applications that don’t exist and even attempt to launch startup applications that were removed from your machine.