Compare software

Caligula vs Popsicle: catalog facts
Caligula	Popsicle
Free Free and open source.	Free Free and open source.
macOS, Linux, Command line	Linux, Command line
Interactive terminal interface instead of raw dd commands Progress display while writing	Flashes several USB drives in parallel GTK interface plus a command-line version
No graphical interface No Windows support indicated	Linux only Focused on writing images, with no image download feature
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.