Doxygen vs PilotDocs

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.

PilotDocs is a hosted SaaS platform for creating, managing, and publishing interactive API documentation. Its references support REST, GraphQL, and WebSocket APIs, with imports for OpenAPI 3.0 and Swagger 2.0. Developers can test APIs in a browser using configurable parameters and API Key, OAuth, or Bearer Token authentication. Guides support Markdown and MDX, code blocks, custom components, and syntax highlighting for 100+ languages. Documentation can be organized by version, with version-specific endpoints and guides, deprecation warnings, migration guides, and comparison tools. Search spans guides and endpoints, with filters and analytics. Hosting includes company subdomains, custom domains on Starter and Business, per-tenant branding, and white-label options. Listed controls include roles, public or private documentation, enterprise SSO, API key authentication, and audit logs. Free provides 1 project, 30 API endpoints, and 10 guides and tutorials. Starter is $49 a month and Business is $99 a month. Paid plans include a 14-day trial without a credit card and a 30-day money-back guarantee. PilotDocs was founded in 2023 and is based in Las Vegas, Nevada.