GParted - Extremely powerful partition manager. Copy, clone partitions.
BusyBox - BusyBox is a single binary that provides several stripped-down Unix tools in a single executable.
GNU fdisk - fdisk is a command-line utility that provides disk partitioning functions.
Toybox (Linux command line utilities) - Toybox combines common Linux command line utilities together into a single BSD-licensed executable...
Diskpart - diskpart is a command-line hard disk partitioning utility included in versions of the Windows NT...
gow - Gow (Gnu On Windows) is the lightweight alternative to Cygwin.