Caligula is a user-friendly, lightweight TUI for imaging disks.

Small binary (few megabytes)
Cool graphs
Listing attached disks, and telling you their size and hardware model information
Rich confirmation dialogs so you don't accidentally nuke your filesystem
Decompressing your input file for a variety of formats, including gz, bz2, and xz
Validating your input file against a hash before burning, with support for md5, sha1, sha256, and more!
Running sudo/doas/su if you forgot to run as root earlier (it happens)
Verifying your disk after writing to make sure it was written correctly
Statically-linked on the Linux version
Did I mention cool graphs?