Hoppscotch — The Open Source API Development Ecosystem

Overview

Hoppscotch is a free open‑source API development ecosystem — essentially a modern API client — that helps developers build, test, document, and collaborate over APIs, all in one place.

• Website: https://hoppscotch.io
• Originally launched as Postwoman, later rebranded to Hoppscotch.
• Platform‑agnostic: available via web, desktop app, or CLI.

Features

• Supported Protocols: REST, GraphQL, WebSocket, MQTT, SSE, and Socket.IO.
• Environments & Variables: Manage base URLs, API keys, etc., for multiple environments.
• Collections & Folders: Organize your API requests effectively.
• Request History & Sharing: Save and share your API requests.
• Pre‑request Scripts & Tests: Add logic and validation to API calls.
• Code Snippet Generation: Generate snippets for popular languages.
• Cross‑Platform & PWA: Works seamlessly across OS and browsers.
• Team & Collaboration Tools: Real‑time collaboration and shared workspaces.
• Self‑Hosting Option: Run Hoppscotch privately on your own servers.
• Simplicity & Speed: Clean, fast UI for testing APIs instantly.
• Flexibility & Versatility: Works with multiple protocols and environments.
• Open‑Source & Transparent: Free, community‑driven, and customizable.
• Accessible Anywhere: No heavy installations, browser‑ready interface.

Interactive API Documentation

Hoppscotch can double as an interactive API documentation hub:

• Build a live, interactive API reference through collections.
• Maintain consistency with shared environment variables.
• Share code examples and live API tests with your team.

Use Cases

• Developers building or testing APIs (REST, GraphQL, etc.)
• Teams needing lightweight, collaborative API tools
• Projects prioritizing open‑source and privacy
• Developers needing quick prototyping or debugging tools
• Documentation engineers creating interactive API docs

Getting Started

• Official Site: https://hoppscotch.io
• GitHub Repository: https://github.com/hoppscotch/hoppscotch

If you want a fast, free, and modern API platform, Hoppscotch is the one to try.