Is Sanity a good choice for documentation sites? Any examples?

Sanity is an excellent choice for a documentation site! Here's why it's particularly well-suited for this use case:

Why Sanity works for documentation:

1. Structured content modeling - You can create custom schemas for different doc types (guides, API references, tutorials, changelog entries) with rich relationships between content. This makes organizing complex documentation hierarchies straightforward and maintainable.

2. Version control & collaboration - Multiple technical writers can work simultaneously with real-time collaboration features showing presence cursors and live updates. If you're on the Growth plan ($15/seat/month), you can use Content Releases to stage documentation updates and publish them atomically - perfect for coordinating major version releases.

3. Live content delivery - The Live Content API enables your documentation site to automatically sync with content changes, working seamlessly with frameworks like Next.js, Nuxt, SvelteKit, and Astro. This uses real-time listening mechanisms to ensure updates appear instantly without manual cache purging.

4. Developer-friendly - Being headless and API-first, you can build your docs site with any frontend framework. Many teams use Next.js or other static site generators with Sanity, giving you full control over the presentation layer.

5. Search & navigation - GROQ (Sanity's query language) makes it powerful to build complex search, filtering, and navigation features that documentation sites need.

Real-world example:

There's actually an open-source Docsta Documentation Template built specifically for this use case! It's a free Next.js documentation template powered by Sanity CMS with MDX support, Tailwind CSS, dark mode, and SEO-friendly features. You can check out the demo and GitHub repo to see it in action.

You can also browse Sanity's project showcase which includes hundreds of production sites, including many knowledge bases and content-heavy sites.

Additional considerations:

For code syntax highlighting and technical content, you can store content as Portable Text (Sanity's rich text format) with custom code block components, or even use Markdown/MDX, then render it with your preferred documentation framework on the frontend.

Note that while the free tier is great for getting started, features like Content Releases require the Growth plan or higher. However, you get a free trial of Growth plan features when you create a new project to test everything out!