HDGraph The first free tool for Windows able to draw multi-level pie charts of disk space ! HDG displays graphically the hard disk space usage. It shows all your directories and subdirectories on a single graph, allowing to see the largest ones at a glance. with freegraphhddspace
Partition Wizard Partition Wizard is a Windows based FREE Partition Manager. It works as partition magic and supports Windows 2000/XP/2003/Vista/7 with system:unfiled