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Sphinx vs Doxygen: catalog facts
Sphinx	Doxygen
Free Free and open source under the BSD 2-Clause licence.	Free Free and open source.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Strong cross-referencing, including across projects Outputs HTML, PDF via LaTeX, ePub and Texinfo	Outputs HTML, PDF, RTF and XML Markdown support in code comments
reStructuredText has a learning curve Requires a Python environment	PDF output requires a LaTeX setup Configuration has many options to learn
Downloadable app	Downloadable app
Open source	Open source
License: BSD-2-Clause	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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