hoppscotchOpen-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

hoppscotch

Hoppscotch is an open-source API development ecosystem that provides a lightweight, fast alternative to Postman and Insomnia. It enables developers to design, test, and collaborate on APIs across web, desktop, and CLI platforms with support for offline and on-premise deployments.

Key Features

• Multi-Protocol Support: Handle HTTP, REST, GraphQL, WebSocket, Server-Sent Events, Socket.IO, and MQTT protocols within a single interface
• Request Management: Create, organize, and execute requests with support for all HTTP methods, custom headers, parameters, and multiple body formats
• Collections and History: Organize requests into unlimited collections with nested folders and automatic syncing with cloud or local storage
• Pre-Request Scripts: Execute JavaScript snippets to set environment variables, generate dynamic values, and customize requests before sending
• Authorization Options: Support for Basic Auth, Bearer Token, OAuth 2.0, and OIDC with PKCE flows
• Theme Customization: Choose from multiple themes with customizable accent colors and distraction-free Zen mode
• Progressive Web App: Install as a PWA for offline support, instant loading with Service Workers, and minimal resource usage
• Team Collaboration: Organize work across teams with synchronized collections and shared resources
• Code Generation: Generate request code snippets for 10+ programming languages and frameworks

Use Cases

• API Development: Design and test APIs during development with real-time feedback and comprehensive HTTP support
• Integration Testing: Validate API endpoints and integrations across multiple protocols without leaving the application
• API Documentation: Query and explore GraphQL schemas with multi-column documentation and interactive testing
• Team Workflows: Collaborate on API requests and collections with team members using synchronized cloud storage
• Offline Development: Continue API testing and request building without internet connectivity using the PWA

Who Is It For

Hoppscotch is ideal for backend developers, API engineers, QA testers, and development teams who need a flexible, open-source alternative to commercial API clients. It serves both individual developers and organizations requiring on-premise or offline-capable API development solutions.