Doxygen

Doxygen is ranked #8 of 38 in documentation generators on The Geeks Club. It runs on Linux, macOS, Windows. There is a free plan.

Doxygen plans and pricing

Free and open source software Free GNU General Public License · Windows, Linux and macOS downloads doxygen.nl · 1 Oct 2026

Compared on documentation generators

Free plan: Yes
Code samples: Yes
Hosting model: self_hosted

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Doxygen

Purpose: Doxygen is a documentation generator that creates documentation from source-code comments and parses classes, functions and variables.
Output formats: Doxygen generates HTML, PDF via LaTeX, Word via RTF and XML documentation.
Languages: Doxygen supports C/C++, Lex, Java, Python, VHDL, PHP IDL, C#, Fortran, Objective-C 2.0 and some D sources.
Cross-platform: Doxygen works on Windows and many Unix flavors, including Linux and macOS.
GUI: Doxygen includes the Doxywizard GUI for editing options and running Doxygen, available on Windows, Linux and macOS.
Diagrams: Doxygen uses Graphviz's dot tool to generate include-dependency, collaboration, call, directory-structure and class-hierarchy graphs.
Help integrations: Doxygen supports HTML Help, docsets, Qt-Help and Eclipse Help formats.
XML integration: Doxygen generates structured XML output for parsed sources that can be used by external tools.
Configuration: Doxygen provides more than 100 configurable options for fine-tuning output.
Privacy: The Doxygen tool does not collect personal or usage data and operates without user registration.
Compliance: Doxygen's privacy policy describes handling of website data under the European Union General Data Protection Regulation.
License: Doxygen is licensed under the GNU General Public License and is provided without express or implied warranty.
Support: Users are directed to Stack Overflow and the doxygen users mailing list, while commercial feature or bug-fix support has limited capacity.
Price from: Free

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Where it ranks on The Geeks Club

Best Documentation Generators in 2026#8 of 38
Best API Documentation Tools in 2026#5 of 28

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Sources

doxygen.nl· checked 1 Oct 2026
doxygen.nl/manual/features.html· checked 1 Oct 2026
doxygen.nl/privacy.html· checked 1 Oct 2026
doxygen.nl/license.html· checked 1 Oct 2026
doxygen.nl/support.html· checked 1 Oct 2026
doxygen.nl/download.html· checked 1 Oct 2026