KDiskMark is an HDD and SSD benchmark tool with a very friendly graphical user interface.
GParted Partition Editor
Gparted est a Free Partition Editor enim graphice administrandi vestri orbis partitiones.
GNOME Orbis
Gnome disks, gnome-disco-imaginem-mounter et GSD-disco-utilitatem-certiorem sunt libraries et applications pro commercio cum repono cogitationes.
Disk Ritus Analyser
Disk Usage Analyzer is a graphical application to analyse disk usage in any Gnome environment.