The best Scalar alternatives
3 tools that do a similar job to Scalar, 3 of them open source. Each entry says what it does and who it suits, so you can pick the one that fits instead of the most famous.
You're replacing
ScalarTurns OpenAPI/Swagger documents into interactive API docs and includes an API testing client.
- 1

Redoc
Open source · MIT · ★ 26k
Turns OpenAPI, AsyncAPI, or GraphQL specs into a readable, browsable API documentation page.
Best for: Teams that already write OpenAPI or Swagger specs and want public or internal API docs; Developers who want to embed API docs in a React app or a plain HTML page
- 2

Bruno
Open source · MIT · ★ 48k
Free, offline-first desktop app for exploring and testing APIs, storing collections as files.
Best for: Developers who want to test HTTP or GraphQL APIs without an account or cloud sync; Teams that already keep code in Git and want API collections stored alongside it
- 3

Hoppscotch
Open source · MIT · ★ 80.7k
Open-source app for building, sending, and testing API requests in the browser, desktop, or CLI.
Best for: Developers who want to test REST, GraphQL, WebSocket, or other APIs without a heavy desktop client; Teams that want to share collections and environments across members
How we pick: tools in the same category that solve the same problem, projects that name each other as alternatives, and open-source projects that describe themselves as an alternative to Scalar. We don't take payment for placement.