Hoppscotch
Open-source API development ecosystem — lightweight, fast, and beautiful.
Hoppscotch is a lightweight, open-source API development platform that runs entirely in the browser with a Progressive Web App (PWA) experience. It supports a wide range of protocols including REST, GraphQL, WebSocket, Server-Sent Events, Socket.IO, and MQTT. The platform features a clean, intuitive interface with real-time collaboration capabilities, environment management, and comprehensive request history. Collections can be organized and shared, while pre-request scripts and test automation help streamline API workflows. With no mandatory sign-up, instant access, and a self-hostable option, Hoppscotch prioritizes developer convenience without compromising on speed or functionality.