Scalar
by Scalar
Interactive API reference docs and API client for OpenAPI
Scalar renders interactive API reference documentation from OpenAPI and Swagger documents and includes a REST API client for sending requests. The open-source packages can be embedded in many server frameworks, and the hosted platform adds docs publishing, SDKs, and a registry.
Key features
- Interactive API reference from OpenAPI/Swagger
- Built-in REST API client
- Code examples for many languages
- Integrations for frameworks such as FastAPI and Hono
Try it on DevTools Daily
Similar tools

Swagger UI
Interactive, browser-based documentation generated from OpenAPI definitions
Redocly
OpenAPI documentation, linting, and developer portal tooling
Insomnia
Open-source API client for REST, GraphQL, gRPC, and WebSockets

Bruno
Offline-first API client that stores collections as plain files in Git

Hoppscotch
Lightweight open-source API development ecosystem that runs in the browser
Mockoon
Create local mock REST APIs in seconds, with a desktop app and CLI