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Caligula vs Tailor: catalog facts
Caligula	Tailor
Free Free and open source.	Free Free and open source under the GPL-3.0-or-later licence.
macOS, Linux, Command line	Linux
Interactive terminal interface instead of raw dd commands Progress display while writing	Native GTK and libadwaita interface Uses libosinfo operating system data
No graphical interface No Windows support indicated	Marked as in development by its author Little documentation on the project page
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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