Sparrow

An open-source API testing application that supports REST, GraphQL, WebSocket, and Socket.IO protocols, enabling teams to test, organize, and share APIs. It targets developers and agile teams in small to large enterprises, offering features like test flows, workspaces, and AI assistance. The tool can be self-hosted for security and syncs with Git for version control, positioning itself as a Postman alternative.

Key features

• Test REST, GraphQL, WebSocket, Socket.IO APIs
• Run multi-step test flows
• Collaborate in shared workspaces
• Self-host for security
• AI-powered code and test generation
• Sync with Git for versioning
• Generate cURL commands from API specs
• Use dynamic expressions for requests
• Configure environments
• Manage multiple AI agents