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15 Best Postman Alternatives for API Testing and Development

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15 Best Postman Alternatives for API Testing and Development

In this article, we will introduce you to 15 of the best Postman alternatives, highlighting their main features and capabilities.

When it comes to API testing and development, Postman has been a popular choice for many developers. However, if you're looking for alternatives or want to explore other options, several excellent tools are available in the market.

In this article, we will introduce you to 15 of the best Postman alternatives, highlighting their main features and capabilities. Whether you're seeking advanced testing functionalities, collaboration features, or specific integration support, these tools offer robust solutions to meet your API testing needs.


Apidog emerges as the superior alternative to Postman, providing developers with an all-in-one workspace for API design, documentation, debugging, mocking, and testing. With Apidog, you can streamline the process of designing and debugging APIs, achieving faster and more efficient development.

Additionally, Apidog automatically generates documentation, mock data, and tests, further enhancing productivity and ensuring comprehensive API coverage.


Key Features of Apidog:

  • User-friendly Interface: Apidog offers an intuitive and easy-to-use interface for seamless API testing and development.
  • API Documentation: Generate detailed and interactive documentation automatically to ensure clear communication.
  • Request Management: Efficiently create, edit, and organize API requests with support for various request types, headers, parameters, and authentication methods.
  • Mocking and Virtualization: Create API mocks and virtualize responses to test API behavior in different scenarios and speed up development.
  • Test Automation: Automate API tests and run them in a continuous integration environment to catch potential issues early and ensure API reliability.
  • Collaboration and Team Management: Facilitate effective collaboration with role-based access control, versioning, and commenting features.


Insomnia is a feature-rich API testing tool that provides a user-friendly interface and advanced testing capabilities. It supports various authentication methods, code generation, dynamic environments, and API documentation synchronization.


SoapUI is a comprehensive testing tool specifically designed for testing SOAP and RESTful APIs. With its intuitive interface, it enables testers to create and execute complex test cases, perform security testing, and generate detailed reports.


Paw is a native Mac application that simplifies API testing with its elegant design and powerful features. It offers a dynamic environment, code snippets, request chaining, and collaborative sharing options.


REST-Assured is a popular Java-based testing library that allows developers to write expressive and readable tests for RESTful APIs. It provides extensive support for JSON and XML parsing, request validation, and response assertion.


Karate is an open-source API testing framework that combines API testing, mock server capabilities, and performance testing. It offers a simple yet powerful syntax, built-in assertions, and data-driven testing support.

DHC by Restlet:

DHC (Dev HTTP Client) is a versatile API testing tool that supports REST, SOAP, and HTTP APIs. It offers features like automation, data-driven testing, OAuth support, and integration with popular CI/CD tools.


Apache JMeter, primarily known for load testing, also provides robust capabilities for API testing. With its user-friendly GUI, testers can create and execute performance tests, analyze response times, and simulate real-world scenarios.


Runscope is a comprehensive API testing and monitoring solution that offers features like traffic inspection, automated testing, and detailed analytics. It helps ensure the reliability and performance of your APIs.


Apigee is an enterprise-grade API platform that includes API testing capabilities along with API management, security, and analytics. It provides a complete solution for designing, testing and managing APIs at scale.

Tricentis Tosca:

Tricentis Tosca is a comprehensive platform covering functional, performance, and API testing. With its model-based approach, it offers seamless API test automation, integration testing, and API security testing.

LoadUI Pro:

LoadUI Pro by SmartBear is a commercial tool designed for load testing APIs. It enables you to simulate high loads, analyze API performance, and identify potential bottlenecks for reliable and scalable APIs.

Katalon Studio:

Katalon Studio is an all-in-one test automation solution that includes robust API testing capabilities. It provides a user-friendly interface, test script generation, data-driven testing, and seamless integration with other testing frameworks.


WireMock is a flexible and easy-to-use tool for creating mock servers and simulating API behavior. It allows developers to stub and simulate API responses, enabling efficient testing and development workflows.

Karate DSL: Karate DSL is an open-source tool that combines API testing, mock server capabilities, and performance testing. It offers an expressive syntax, parallel execution, powerful assertions, and easy integration with popular CI/CD systems.


These 15 Postman alternatives offer a diverse range of features and capabilities to fulfill your API testing requirements. Whether you need advanced testing functionalities, load-testing capabilities, or collaborative features, these tools provide robust solutions to streamline your API testing efforts.

Especially, Apidog is the best Postman alternatives tool, with powerful API  features to efficiently and effectively meet your testing, mocking, and other operations.