Thanks! I'm Mo, one of the authors of Zudoku. Zudoku is a tool for creating highly interactive API docs that can grow into a fully-fledged developer portal with everything you need (usage, debugging tools, API keys).

You can do this by extending Zudoku with plugins that you can share within the community. So we can build this thing together (The docs are not quite done yet for plugins https://zudoku.dev/docs/custom-plugins)

Also, it's free & open source!

Do you think that's different from other tools?

Thanks for checking it out. The focus of Zudoku is on making it super easy to ship beautiful API documentation. There are tons of alternatives, but we didnt feel like anything out there met our bar in terms of design and ease of use.

Zudoku is also the basis of part of our product (zuplo.com) offering so it is extremely extensible. Our managed, hosted version builds on the extensibility of Zudoku to add additional capabilities like API Key management, analytics, etc. Anyone can use these extensibility points to add their own custom capabilities.