Piriform Ltd.

CCleaner is a powerful yet easy-to-use freeware software for optimizing, protecting privacy and cleaning up Windows PC. It provides comprehensive protection for both online and offline privacy, enhancing system speed and security. With a small memory footprint, it's an indispensable tool for any PC user.

Recuva is a Windows software tool that enables users to recover accidentally deleted files, even if they have been emptied from the Recycle bin. It can restore images and other files, and is available as a free download.