Asciidoctor

Asciidoctor is ranked #6 of 38 in documentation generators on The Geeks Club. It runs on API, Browser extension, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Asciidoctor plans and pricing

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Asciidoctor Free Open source under the MIT license · Core converters include HTML 5, DocBook 5 and man pages; PDF and EPUB 3 use separate gems docs.asciidoctor.org · 4 Oct 2026

Compared on documentation generators

Free plan: Yes
Source inputs: AsciiDoc files; AsciiDoc strings
CI/CD integration: Yes
Output formats: HTML 5, XHTML, DocBook 5, man pages, PDF, EPUB3, Reveal.js, Bespoke
Programming languages: Ruby, Java, JavaScript, JVM languages

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Asciidoctor

Purpose: Asciidoctor is an open source text processor and publishing toolchain for converting AsciiDoc into HTML5, DocBook, PDF, EPUB 3, manual pages, and other formats.
Built-in converters: The core processor includes built-in converters for HTML5, DocBook 5, and man pages; PDF and EPUB 3 converters are provided by separate gems.
HTML features: Its default HTML experience includes a stylesheet and integrations for Font Awesome, highlight.js, Rouge, Pygments, and MathJax.
Runtimes: Asciidoctor runs on Ruby, on the JVM through AsciidoctorJ, and in JavaScript environments through Asciidoctor.js.
Integrations: The project ecosystem includes Maven and Gradle plugins, browser extensions, an IntelliJ plugin, and tools such as Asciidoctor Diagram.
Operating systems: The site says Asciidoctor works on Linux, macOS, and Windows.
Distribution: Asciidoctor is distributed as a RubyGem, a Docker image, packages for numerous Linux distributions, and a macOS package through Homebrew and MacPorts.
Requirements: The documented Ruby implementations are CRuby 2.3–3.3, JRuby 9.1–9.4, and TruffleRuby (GraalVM).
API and safety: The Ruby API documentation says its default safe mode is :secure.
License: Asciidoctor use is granted under the MIT License.
Support: The project lists community chat, documentation, GitHub source repositories, and issue trackers as community resources.
Intended users: The project describes its goal as providing an accessible, comprehensive, open source toolchain and workbench for writing and publishing AsciiDoc across platforms and runtimes.
Runtime options: Asciidoctor can run using Ruby, a JVM through AsciidoctorJ, or JavaScript through Asciidoctor.js.
Interfaces: The processor provides a command line interface and a Ruby API for processing documents.
Price from: Free

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Where it ranks on The Geeks Club

Best Documentation Generators in 2026#6 of 38

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Sources

asciidoctor.org· checked 3 Oct 2026
docs.asciidoctor.org/asciidoctor/latest/· checked 3 Oct 2026
docs.asciidoctor.org/asciidoctor/latest/cli/man1/asciidoctor· checked 3 Oct 2026
docs.asciidoctor.org/about/· checked 3 Oct 2026
docs.asciidoctor.org/asciidoctor/latest/safe-modes/· checked 4 Oct 2026