How to Choose a Documentation Platform

A guide to selecting the right documentation tool for your startup's API docs, knowledge base, or internal wiki. Compares developer experience, customization options, hosting models, and the tradeoffs between all-in-one platforms and purpose-built doc tools.

Key Decision Criteria

Audience Type

High Priority

Internal wikis, customer-facing help centers, and developer API docs have very different requirements. Notion excels as an internal wiki with rich collaboration. GitBook and Mintlify are purpose-built for developer-facing docs with code samples, API references, and versioning. README focuses specifically on interactive API documentation with a try-it-now experience.

Developer Experience

High Priority

If your docs live alongside code, you want Git-based workflows. Mintlify and GitBook both support docs-as-code with MDX files in your repo. README provides a visual editor that non-developers can use. Notion is the easiest for anyone to edit but offers the least control over output formatting.

Customization and Branding

Medium Priority

Mintlify offers the most polished out-of-the-box design with full CSS customization, custom domains, and components. GitBook provides clean default themes with moderate customization. README's customization is more limited but includes API explorer features. Notion published pages look like Notion — minimal branding control.

Questions to Ask Yourself

Are your docs primarily for developers or non-technical users?

Developers: Mintlify ($150/mo for Startup plan) or GitBook (free for open source, $8/user/mo for teams) give you code blocks, API playgrounds, and versioning. Non-technical users: Notion ($10/user/mo) or GitBook's visual editor are more approachable. API-first products: README ($99/mo for Startup plan) specializes in interactive API documentation.

Do you need your docs to live in your Git repository?

Yes: Mintlify and GitBook both support syncing from GitHub/GitLab, so docs update on every merge. This keeps documentation reviewed alongside code changes. No: README and Notion offer visual editors that non-engineers can use without touching Git.

How important is search and discoverability?

All four tools offer search, but quality varies. Mintlify includes AI-powered search that understands natural language questions. GitBook has solid full-text search. README's search is scoped to API endpoints. Notion's search is functional but slow on large workspaces. If self-serve support is critical, prioritize search quality.

Red Flags to Watch For

Using Notion as your public developer documentation

Notion works well for internal wikis but published Notion pages lack proper SEO, navigation structure, API reference formatting, and code syntax highlighting. Developers expect a professional docs experience — purpose-built tools like Mintlify or GitBook deliver this out of the box.

Building a custom documentation site from scratch

Rolling your own docs site with Docusaurus or a static site generator sounds flexible but costs weeks of engineering time for search, versioning, navigation, and mobile responsiveness. Tools like Mintlify give you a polished result in hours, freeing engineering time for your actual product.