JAM Software TreeSize Professional 6.2.3.1075 (x86/x64) + Portable | 42.7/37 Mb
TreeSize Professional is a powerful and flexible hard disk space manager for Windows 8/7/Vista/XP or Windows Server 2012/2008/2003 (32 or 64 Bit). Native 64 Bit support makes sure that available memory will never pose a restriction - not even on the largest systems. From Windows Vista/Server 2008 onwards TreeSize provides a ribbon user interface.