The lightest and fastest platform for API testing
Sparrow is now lighter, faster, smarter, and AI-powered. From natural language API calls to self-hosting, it’s a complete package of modern API testing. Built for speed, clarity, and control—no clutter, just flow. Experience the new Sparrow.
Sparrow launches 40% faster than competitors and uses less than half of Postman's resources, enabling developers to start testing in seconds with a lightweight, clutter-free UI that keeps systems responsive
Sparrow Hub enables real-time collaboration with Active Sync to automatically keep OpenAPI specs and collections synchronized, supporting unlimited collaborators on Standard and higher plans
Sparrow AI provides plain-English explanations, one-click edits, and instant debugging suggestions directly in the editor, plus auto-generates mock responses and cURL commands to skip manual work
Sparrow offers self-hosted deployment on-premise or private cloud, ensuring API specs and credentials never leave the organization's infrastructure, supporting GDPR compliance and eliminating vendor lock-in
Sparrow's Test Flows feature enables advanced multi-step automation with JavaScript-based Dynamic Expressions to pass data between blocks, supporting up to 30 APIs per flow depending on plan tier