18.4
Scalar is a collection of API products for documentation, client generation, API management, requests, and MCP server use.
Free planOpen sourceWebAPILinux
Best API Docs in 2026
28.0
Mintlify is a documentation and knowledge platform for developers and AI agents.
Free planWebAPILinux
37.9
doccano is a free, open-source tool for labeling text and other data for human review and machine-learning work.
Free planOpen sourceAndroidiOSWeb
- 4
Fern
Fern Docs builds interactive documentation websites from Markdown and API specifications, while Fern also generates strongly typed client libraries.
Free planOpen sourceWebAPILinuxmacOS7.8Free plan - 5
Theneo
Theneo is a developer portal platform for publishing API references, guides, changelogs, and private customer portals.
Free planWebAPIExtensionSelf-hosted7.5From $120 a month - 6
APIMatic
APIMatic turns API contracts into SDKs, documentation, developer portals, code samples, Context Plugins, and MCP servers.
Free planWebAPIExtensionLinux7.4From $99 a month - 7
SwaggerHub
SwaggerHub is a toolkit for API design, testing, documentation, and governance.
Free planWebSelf-hosted7.1From $740 a year - 8
Redocly
WebAPIExtension7.0From $10 a month - 9
ReadMe
Free planWeb6.7From $250 a month - 10
TypeDoc
TypeDoc is a free documentation generator for TypeScript projects.
Free planAPILinuxSelf-hosted6.5Free plan - 11
Bump.sh
Bump.sh is a paid web, API, and self-hosted service for publishing API documentation and providing MCP servers that update with API releases.
WebAPISelf-hosted6.4From $50 a month - 12
Stoplight Elements
Free planWebSelf-hosted6.4Free plan - 13
Zudoku
Zudoku is a free, open-source framework for building API documentation and developer portals around OpenAPI.
Free planWebSelf-hosted6.1Free plan - 14
Jazzy
Jazzy is a free, MIT-licensed command-line utility for generating Swift and Objective-C documentation.
Free planLinuxmacOS6.0Free plan - 15
Widdershins
Widdershins converts API definition files into documentation inputs for rendering pipelines.
Free planAPILinuxSelf-hosted6.0Free plan - 16
AsyncAPI Generator
AsyncAPI Generator is free, open-source software that uses an AsyncAPI document and a template to create documentation, code, diagrams,…
Free planLinuxSelf-hosted5.9Free plan - 17
RAML2HTML
RAML2HTML is a free, open-source Node.js package that generates HTML documentation from RAML.
Free planLinuxSelf-hosted5.8Free plan - 18
JSDoc
APISelf-hosted5.4 - 194.4