Doxygen vs Palt

Doxygen is a free documentation generator that turns source-code comments into reference material, parsing items such as classes, functions and variables. It supports C/C++, Lex, Java, Python, VHDL, PHP IDL, C#, Fortran, Objective-C 2.0 and some D sources. Output can be generated as HTML, PDF through LaTeX, Word through RTF or structured XML for external tools. Graphviz’s dot tool can add include-dependency, collaboration, call, directory-structure and class-hierarchy diagrams. Doxywizard provides a graphical interface for editing settings and running the generator on Windows, Linux and macOS; Doxygen also works on many Unix flavors. It supports HTML Help, docsets, Qt-Help and Eclipse Help, with more than 100 configurable options. The tool runs without registration and does not collect personal or usage data. It is self-hosted and licensed under the GNU General Public License, without express or implied warranty. Help is listed through Stack Overflow and the doxygen users mailing list; commercial feature and bug-fix support has limited capacity.

Palt is a hosted API documentation platform for creating, publishing, and managing interactive reference material from OpenAPI specifications. Import OpenAPI or Swagger JSON and YAML files for OpenAPI 3.0 and later, then let readers try endpoints in a browser-based console. Palt also generates code samples in cURL, JavaScript, Python, Go, and more. A visual editor offers custom colors, fonts, dark mode, HTTP-method colors, and company logos; endpoint search includes keyboard shortcuts. Published documentation can use a custom domain or be embedded in an existing site. Custom domains are free and include automatic SSL. The Free plan costs nothing and includes 3 projects, a custom domain, the Try It playground, and basic analytics. Pro costs $19 a month per project and adds branding removal, custom CSS, advanced analytics, and priority support. Enterprise pricing is custom and includes SSO, audit logs, an SLA guarantee, and dedicated support. Palt says it does not store API keys or sensitive request data.