Postman
Curated list of 3 open source alternatives to Postman
Our top recommended open source alternative for Postman is Hoppscotch. Not what you're looking for? We've curated a list of 3 quality open source Postman replacements to fit your specific needs. Notable open source options for Postman include: Insomnia, Fern.
Postman alternatives primarily fall under API Management, Developer Tools or API Testing. Explore these categories for more targeted solutions or specific Postman features you need.
Hoppscotch is a lightweight, fast API development ecosystem with an intuitive interface for testing and developing APIs.
Key Features
- Lightweight interface with minimalistic UI design
- Real-time request sending and response handling
- Support for all standard HTTP methods (GET, POST, PUT, PATCH, DELETE, etc.)
- Custom HTTP method support for specialized API testing
- Customizable themes with multiple color schemes and dark/light modes
Insomnia is an open-source collaborative API development platform that enables developers to design, test, and debug APIs through an intuitive interface.
Key Features
- Multi-protocol support (HTTP, REST, GraphQL, gRPC, SOAP, WebSockets)
- Collaborative API development environment with Git integration
- 350+ open source plugins for workflow extensibility
- Local, Git, and cloud-based API development capabilities
- Built-in automation and testing tools
Fern is a platform that automatically generates type-safe SDKs and beautiful documentation from API definitions in minutes.
Key Features
- Generate type-safe SDKs in TypeScript, Python, Java, Go, Ruby, PHP, and C#
- Create interactive developer documentation with auto-generated API and SDK references
- AI-powered search assistant trained on your documentation, APIs, and SDKs
- Support for multiple API specifications including OpenAPI, AsyncAPI, Protobuf, and OpenRPC
- Automated SDK generation and maintenance from API definitions
