WizTree

vs

Win32 Disk Imager

TreeSize is a disk space manager for Windows. The application is used by over 100,000 people to identify where storage space is going. TreeSize provides a visual representation of your harddrive, and tools to clean up unwanted files to increase overall storage space.

GNOME Disks is a free and open-source GUI for the gnome-disk-utility package. GNOME Disks can be used for partition management, monitoring, benchmarking, and software RAID.

DaisyDisk is a freemium disk analyzer application for macOS. With DaisyDisk you can visualizes hard disk usage and get a broad overview on how to free up hard disk space. Through an intuitive interface with an interactive sunburst chart that you can use to easily navigate your hard disk, and free up space by deleting large files that you don't use.

MultiBootUSB is a cross platform software that allows you to install multiple live linux on a USB disk non destructively and option to uninstall distros. MultiBootUSB is written in Python and is released as free and open-source software under the GPL-2.0 License.

With Rufus you can format and create bootable USB drives. Rufus is free and open source and can format FAT, FAT32, NTFS, exFAT, UDF, ReFS that works across USB flash drives, keys, and memmory sticks.

Ventoy is a free and open source tool that you can use to create bootable USB drive for ISO,WIM, IMG,VHD, and EFI files. You can copy many files at a time with Ventoy, instead of formating disks over and over again. Ventoy supports x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI and ARM64 UEFI.