GParted, Macrium Reflect, MiniTool Partition Wizard, Disk Drill, DiskGenius, AOMEI Partition Assistant, Partition Magic, Diskpart, Parted Magic, Disk Utility, Acronis Disk Director, GNU fdisk, Windows Computer Management, Partition Logic, iPartition, Active@ Boot Disk, Windows 7 Disk Management, Stellar Partition Manager, KDE Partition Manager, IM-Magic Partition Resizer, Hasleo Disk Clone, GNU Core Utilities, blivet-gui, Udev Discover, Free Partition Manager, lsscsi, lsdisk, hddtemp are some alternatives to GNOME Disks.