[Farow]

I'm personally a fan of SpaceSniffer: http://www.uderzo.it/main_products/space_sniffer/index.html

[flir]

While we're listing them, Disk Inventory X (https://www.derlien.com/)

[macote]

Thanks for sharing! I really like the real time update during progress. You sometimes have to wait a very long time in Scanner before you see the result.