Best Documentation Generators in 2026
Updated
In short: Asciidoctor is ranked #1 of 38 as of 4 October 2026, ahead of Scalar and Sphinx. The best-ranked option with a free plan is Scalar. The lowest first paid tier on this page is Redocly at $10/mo.
Documentation generators produce project documentation from source inputs, helping teams prepare material to publish and maintain alongside software. Compare supported programming languages and source inputs, then check output formats and API reference generation. CI/CD integration may matter if documentation is part of your build process, while versioned documentation can be useful when supporting multiple releases. Free-plan availability and paid-from pricing are additional comparison points. The ranking opens with Sphinx, Scalar, and MkDocs, followed by DocFX and Redocly; Asciidoctor and Doxygen are also among the first entries. Consider which inputs, outputs, and workflow requirements matter for your projects.
38 documentation generators ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Asciidoctor Top pick · 7.4 Free plan · Free
#2 Scalar Runner-up · 7.3 Free plan · $150/mo
#3 Sphinx Also great · 7.3 Free plan · Free
- Free plan apiextensionLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Source inputs
- AsciiDoc files; AsciiDoc strings
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Paid from
- 150 /mo
RecognisedDocumentedFree planPlatforms$150/mofirst paid tier About ScalarVisit site - Free plan apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWebWindows
- Source inputs
- Kotlin source with KDoc, Java source with Javadoc, Markdown module and package documentation
- API reference generation
- Yes
- Versioned documentation
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
- Source inputs
- Markdown
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiLinuxmacOSself-hostedWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSself-hostedWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan self-hostedWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
- Source inputs
- Dart source code; Dart documentation comments
- API reference generation
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apiextensionWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms$10/mofirst paid tier About RedoclyVisit site - LinuxmacOSWindows
- Source inputs
- Symbol Graph files (.symbols.json); .docc documentation catalogs; Markdown files; tutorial files; documentation assets; Info.plist metadata
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - LinuxmacOSWebWindows
- Free plan
- Yes
- Source inputs
- Markdown files (.md and .markdown), arranged in folders
- API reference generation
- No
- Versioned documentation
- No
RecognisedDocumentedFree planPlatforms - LinuxmacOSWindows
- Free plan
- Yes
- Source inputs
- Lua source files, C/C++ extension source, Markdown documents and readme files, source examples
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
- Source inputs
- source code, text files
- API reference generation
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
- Source inputs
- Python modules, Python packages, C modules
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Free plan
- Yes
- Source inputs
- Rust crate roots, Markdown files
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - macOSLinux
- Source inputs
- Swift source, Objective-C source, Xcode projects, Swift Package Manager projects, compiled Swift modules, frameworks, symbol graph files, SourceKitten JSON, Markdown guides
- API reference generation
- Yes
- Versioned documentation
- Yes
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinux
- Source inputs
- JSON, YAML
- API reference generation
- No
RecognisedDocumentedFree planPlatforms - Windows
- Free plan
- Yes
- Source inputs
- managed assemblies, XML comments, Visual Studio solutions and projects, Markdown, MAML
- API reference generation
- Yes
- Versioned documentation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Source inputs
- Elixir, Erlang, Markdown, Livebooks, cheatsheets, plain text
- API reference generation
- Yes
- Versioned documentation
- Yes
RecognisedDocumentedFree planPlatforms -
- Free plan
- Yes
- Source inputs
- Ruby, C, RBS, RDoc, Markdown, RD, TomDoc
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms - macOS
- Free plan
- Yes
- Source inputs
- screen captures, screen recordings, mouse clicks, keystrokes
- API reference generation
- No
RecognisedDocumentedFree planPlatforms - WindowsmacOSLinuxRecognisedDocumentedFree planPlatforms
-
- Source inputs
- AsyncAPI Document; templates
- API reference generation
- Yes
- CI/CD integration
- Yes
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which documentation generator is ranked first on Everything Xiaomi?
Asciidoctor is ranked #1 of 38 with a score of 7.4. Scalar is second and Sphinx third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Redocly has the lowest first paid tier we found: $10/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.