Hoppscotch

Hoppscotch is an open-source web app and server that provides a comprehensive ecosystem for API development. It allows developers to test, debug, and document APIs through a web-based interface, though it is also available as a desktop application for Windows, Linux, and macOS. It can also be installed as a Progressive Web App (PWA) for offline support and lower resource consumption.

The software supports a wide range of protocols beyond standard REST requests, including WebSockets, GraphQL, Socket.IO, and MQTT. It is primarily deployed as a web application and offers optional browser extensions to resolve CORS issues when accessing APIs directly from the browser. Users can send requests, analyze responses, and manage API endpoints without needing a heavy local installation.

Key features

• Support for multiple HTTP methods including GET, POST, PUT, PATCH, and DELETE
• GraphQL integration with schema fetching and multi-column documentation
• Real-time communication testing via WebSockets, Socket.IO, and MQTT
• Organization of requests into nested collections and folders with GitHub gist import/export
• Pre-request scripts and post-request tests written in JavaScript
• Environment variable management for reusing values across requests
• Team collaboration with shared collections and role-based access control
• Code snippet generation for over 10 languages and frameworks
• Integrated proxy mode to hide IP addresses and access non-HTTPS endpoints

Built with Vue.js, the platform focuses on low memory and CPU usage to maintain performance. It includes a synchronization system that links workspaces, history, and settings across devices via cloud accounts using providers like GitHub, Google, and Microsoft. The architecture supports both personal use and team-based workflows through dedicated workspaces and an admin dashboard for user management. For those requiring command-line access, the ecosystem includes a dedicated CLI tool.

It is a lightweight, browser-first API client for developers who require a fast, open-source tool.