Compare software

Caligula vs Impression: catalog facts
Caligula	Impression
Free Free and open source.	Free Free and open source under the GPLv3.
macOS, Linux, Command line	Linux
Interactive terminal interface instead of raw dd commands Progress display while writing	Minimal interface focused on one task Fits in with the GNOME desktop
No graphical interface No Windows support indicated	Linux only Fewer options than full-featured image writers
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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.