Mintlify
mintlify.comDocumentation
Point it at a GitHub repo and get a polished, AI-searchable docs site without touching a CSS file.
Other products from Documentation
If your product is an API, this turns your OpenAPI spec into docs devs can actually test requests against.
The default pick when you want docs that read like a real product, not a wall of Markdown.
Free, open-source, and battle-tested by half of GitHub's OSS projects — the safe default for docs-as-code.
Already on Next.js? This gets you a fast, MDX-powered docs site without adopting a second framework.