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Vivliostyle vs Antenna House Formatter: catalog facts
Vivliostyle	Antenna House Formatter
Free Free and open source.	Paid Commercial licences with paid maintenance; a trial download is available.
Web, Command line	Linux
Book layout written in standard CSS Browser viewer and command-line PDF export	Supports both XSL-FO and CSS for Paged Media Long development history with regular releases
Requires familiarity with HTML and CSS Vivliostyle Pub is still in alpha	Paid commercial licence Aimed at automated publishing rather than editing existing PDFs
Downloadable app, Web application	Downloadable app
Open source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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