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Natural Docs vs docfx: catalog facts
Natural Docs	docfx
Free Free and open source under the AGPL-3.0 licence.	Free Free and open source under the MIT licence.
Windows	Windows, Command line
Supports 25 languages in one documentation set Plain-English comment syntax without heavy tags	Generates API reference straight from .NET assemblies and XML comments Combines API docs with Markdown articles
Newer 2.4 features are still in development releases Comment style differs from Javadoc or Doxygen conventions	Requires the .NET SDK 8.0 or higher PDF output needs Node.js as well
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: MIT
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 2, 2026

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