When you use your PC, there are a lot of traces left all over. There's your Web history, Windows' temporary files and cookies. Fortunately, this free program makes easy work to get rid of those traces.
It can also clean out file fragments and uninstall old programs for you. That could all save you a lot of disk space.
CCleaner lets you specify exactly what types of items it can delete. You can also choose to analyze your disk first. Then you can preview everything that CCleaner plans to delete. And it automatically makes backups if it cleans your Registry.
CCleaner gives you the option to delete unessential start-up programs. That means unessential to run Windows. You can find this option in the Tools menu. But be careful if you use it. The list can include anti-virus monitoring programs. You'll want to keep those and other security start-up programs.