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HonKit vs Asciidoctor EPUB3: catalog facts
HonKit	Asciidoctor EPUB3
Free Free and open source.	Free Free to download and use; the source is published on GitHub.
Windows, macOS, Linux, Command line	Command line
Builds HTML, PDF and EPUB from one Markdown source Continues the open-source GitBook format	Converts AsciiDoc straight to EPUB3 Works within the existing Asciidoctor toolchain
Command line only Requires a Node.js setup	Command-line only, needs a Ruby setup Only useful if your source text is in AsciiDoc
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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