Postman Alternatives (A Complete List)

A curated list of excellent alternatives to Postman for API development, testing, and documentation. This repository highlights modern, feature-rich tools that can enhance your API workflow.

1. APIdog 🔥

Website: https://apidog.com

APIdog is a comprehensive all-in-one API development platform that combines design, debugging, testing, documentation, and mock services in a single integrated environment.

Key Features:

🚀 Complete API lifecycle management in one platform
📝 Visual OpenAPI Specification (OAS) design editor
🧪 Automated API testing with visual assertion and validation
📚 One-click API documentation generation
🔄 Smart mock server that generates realistic data without coding
🌐 Multi-protocol support
🤝 Team collaboration features
🔄 API design-first approach with synchronization across the lifecycle
🔌 CI/CD integration with tools like Jenkins, GitHub, and GitLab

APIdog positions itself as a comprehensive replacement for multiple tools: "One app to replace them all = Postman + Swagger Editor + Swagger UI + Stoplight + ReadMe + JMeter + SoapUI + Mock..."

2. Bruno

Website: https://www.usebruno.com

Bruno is a fast, Git-friendly, and open-source API client designed to streamline your API testing workflow.

Key Features:

📁 Git-friendly collections stored as plain text files
🔒 Local-first approach with no account requirements
📝 Declarative testing syntax
🚫 No cloud dependency (works offline)
⚡ Lightweight and fast performance
🌐 Support for REST, GraphQL, and other API protocols
💻 Available for Windows, macOS, and Linux

3. Hoppscotch

Website: https://hoppscotch.com

Hoppscotch is an open-source API development ecosystem focused on creating a lightweight, fast experience for testing APIs.

Key Features:

🌐 Supports REST, GraphQL, WebSockets, and more
⚡ Fast, lightweight browser-based interface
🔐 Authentication helpers
📱 PWA support for offline use
🌙 Dark mode interface
🧪 Pre-request and test scripts
☁️ Self-hosting option for companies
📦 Environment and collection management

4. Insomnia

Website: https://insomnia.rest

Insomnia is a powerful open-source API client for REST, GraphQL, gRPC, and SOAP APIs with a focus on debugging and design.

Key Features:

🎨 Clean, intuitive user interface
📝 OpenAPI design and import tools
🧪 Test automation capabilities
🔐 Advanced authentication support
🔄 Environment variables and context switching
🔌 Plugin system for extensibility
🤝 Team collaboration features
📚 Request history and organization tools

5. Thunder Client (VS Code Extension)

Website: Thunder Client on VS Code Marketplace

Thunder Client is a lightweight Rest API Client Extension for VS Code, with a clean UI and simple interface.

Key Features:

💻 VS Code integration
🧪 Basic testing capabilities
📝 Collections and environment variables
📊 Response visualization
⚡ Fast and lightweight
🔄 Import/export collections

6. Testfully

Website: https://testfully.io

Testfully is a collaborative API testing platform with advanced test management features.

Key Features:

🤝 Collaborative testing environment
🧪 Advanced assertions
📊 Test reporting and analytics
🔄 CI/CD integration
📝 Documentation capabilities
🔐 Role-based access control

7. Paw (macOS)

Website: https://paw.cloud

Paw is a full-featured HTTP client designed exclusively for macOS with a focus on developer experience.

Key Features:

🍎 Native macOS application
🎨 Beautiful UI design
🔄 Dynamic values generation
📦 Extensions support
🧩 Code generation features
📊 Response visualization

8. SoapUI

Website: https://www.soapui.org

SoapUI is a headless functional testing tool dedicated to API testing, with robust capabilities for SOAP and REST APIs.

Key Features:

🧪 Advanced API testing capabilities
📊 Load testing functionality
🤖 Test automation
📝 Detailed reporting
🔄 Supports data-driven testing
🔌 Extensive plugin ecosystem

Contributing

Contributions are welcome! Please feel free to submit a Pull Request to add more alternatives or update information about existing tools.

License

This repository is licensed under the MIT License - see the LICENSE file for details.