Updated May 2026:Mintlify crossed 1,500 customers. ReadMe launched AI Recipes. GitBook 6 ships. Docusaurus 3.5 with React 19 support. Stoplight (Smartbear) integrated SwaggerHub.
Developer docs separated intomarketing-doc-as-product(Mintlify, ReadMe) vsinternal/wiki-style(GitBook) vsopen source(Docusaurus). API-first companies need API spec rendering (Stoplight, Mintlify).
Quick Picks
- Beautiful product docs→Mintlify
- API-first with playground→ReadMe
- Internal team wiki→GitBook
- Open source / Markdown-first→Docusaurus
- OpenAPI spec design→Stoplight
Pricing
| Tool | Free | Paid |
|---|---|---|
| Mintlify | Hobby tier | $120/mo (Pro) |
| ReadMe | Free starter | $99/seat (Startup) |
| GitBook | Personal free | $8/user (Plus) |
| Docusaurus | Free open source | Free (host yourself) |
| Stoplight | Free public | $59/seat (Starter) |
