Hoppscotch

Hoppscotch is a lightweight, web-based API development and testing platform. It supports HTTP requests across all standard methods, WebSocket, GraphQL, MQTT, and Server-Sent Events, and organises requests into collections and folders for easy reuse. Pre-request scripts, post-request tests, and environment variables allow teams to build repeatable, dynamic testing workflows.

Additional features include code snippet generation for more than ten programming languages, cURL import and export, authentication support for Basic, Bearer, OAuth 2.0, and OIDC, and shareable request URLs. Desktop and CLI versions complement the web app, and a self-hosted option is available for organisations that need to keep API definitions on their own infrastructure.

Hoppscotch is designed for individual developers and development teams who want a fast, open, and privacy-friendly alternative to heavier API clients, with real-time collaboration and role-based access controls for shared workspaces.