Why I use it: The most popular API platform. Build, test, document, and monitor APIs with team collaboration.
Why I use it: Auto-generates API docs from live traffic and scores API quality. Lightweight SDK integration — minimal setup for maximum insight.
Why I use it: Largest API marketplace — great for discovering and testing third-party APIs before direct integration.
Why I use it: All-in-one API platform — design, test, mock, and document in one tool. Good Postman alternative with generous free tier.
Why I use it: Git-native API client — collections stored as files in your repo. No cloud account needed. The developer's Postman alternative.
Why I use it: API design-first platform with visual editors and beautiful docs. Git-backed workflow integrates into your existing process.
Why I use it: Open-source Postman alternative — fast, lightweight, and self-hostable. Supports REST, GraphQL, WebSocket, and SSE.
Why I use it: The GraphQL ecosystem standard. Apollo Client + Server + Federation covers the full stack. GraphOS for schema management at scale.
Why I use it: The OpenAPI ecosystem foundation. Use Swagger UI for interactive API docs and Codegen for client SDKs.
Why I use it: Open-source API client with a clean UI. REST, GraphQL, and gRPC testing in one tool.