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Asciidoctor EPUB3 vs Pressbooks: catalog facts
Asciidoctor EPUB3	Pressbooks
Free Free to download and use; the source is published on GitHub.	Paid Prices are not listed on the homepage; enterprise plans start with a demo request.
Command line	Web
Converts AsciiDoc straight to EPUB3 Works within the existing Asciidoctor toolchain	Exports books in several formats from one source Supports interactive content such as H5P quizzes and annotations
Command-line only, needs a Ruby setup Only useful if your source text is in AsciiDoc	Pricing is not published on the homepage Enterprise plans are aimed at institutions and sold through demos
Downloadable app	Web application, Hosted service
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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