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Asciidoctor EPUB3HonKit
Free

Free to download and use; the source is published on GitHub.

 Free

Free and open source.

Command line Windows, macOS, Linux, Command line
  • Converts AsciiDoc straight to EPUB3
  • Works within the existing Asciidoctor toolchain
  • Builds HTML, PDF and EPUB from one Markdown source
  • Continues the open-source GitBook format
  • Command-line only, needs a Ruby setup
  • Only useful if your source text is in AsciiDoc
  • Command line only
  • Requires a Node.js setup
Downloadable app Downloadable app
Open source Open source
License not stated License: Apache-2.0
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked October 2, 2026

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