15 Best Postman Alternatives in 2024

Testsigma Inc.
4 min readApr 1, 2024

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In the past years, Postman has been dominant in the API development market, offering a suite of tools for designing, testing, and documenting APIs. However, currently, developers now have a lot of alternatives to choose from.

In 2024, there are numerous tools available that cater to the different needs of testers and developers. Whether it is enhancing collaboration, advanced automation capabilities, or better integration options.

In this article, we’ll explore 15 of the best Postman alternatives, each offering unique features to meet the demands of your development and testing workflows.

15 Best Postman Alternatives

1. Testsigma

Testsigma is an AI-driven test automation platform designed to simplify the process of creating and executing automated tests. It offers a no-code approach to test automation, making it accessible to both technical and non-technical users. Testsigma provides features such as scriptless test creation, natural language processing for test case creation, and self-healing tests that adapt to changes in the application under test.

2. Insomnia

Insomnia is a popular open-source alternative to Postman, providing a sleek and intuitive interface for designing, testing, and debugging APIs. With support for features like environment variables, code generation, and GraphQL queries, Insomnia offers versatility to developers.

This tool is ideal for small to medium-sized development teams requiring robust API testing and debugging capabilities.

3. Paw

Paw is an API client designed exclusively for macOS, offering a visual interface for building and testing APIs. Its advanced features include dynamic values, file uploads, and OAuth authentication, making it ideal for complex API workflows. Suitable for macOS-centric development teams needing powerful API testing and documentation tools.

4. SoapUI

SoapUI is a comprehensive API testing tool supporting both SOAP and REST APIs. Its features include data-driven testing, assertion scripting, and security testing, making it a preferred choice for QA teams. This tool is useful for QA teams working on SOAP-based API testing and validation.

5. Talend API Service

Talend API Service is a cloud-based tool for testing REST and SOAP APIs. With features like automated testing, data-driven testing, and API mocking, it caters to both developers and QA professionals. Well-suited for smaller development teams focusing on REST API testing and validation.

6. Karate

Karate is an open-source test automation platform API testing framework offering API testing, API performance testing, API mocks & UI testing. It simplifies the creation and maintenance of test suites.

7. Hoppscotch

Hoppscotch is a free and open-source API client running entirely in the browser. Offering features like environment variables, pre-request scripts, and GraphQL support, it’s convenient for developers preferring browser-based tools.

8. HTTPie

HTTPie is a command-line HTTP client, providing a simple and intuitive interface for API interactions. With features like syntax highlighting, JSON output, and HTTPS support, it’s better for developers comfortable with terminal-based workflows. HTTPie has a Command-line interface for quick API interactions, intuitive syntax for HTTP requests, and is extensible via plugins.

9. Advanced REST Client (ARC)

ARC is a free API testing tool for Desktop, offering features like request history, cookie and session management, and OAuth support. It integrates with popular API design platforms like RAML and Swagger.

10. JMeter

JMeter is a Java-based open-source tool for performance testing of APIs. With features like load testing, distributed testing, and reporting, it’s widely used by developers and QA professionals alike.

11. Katalon Studio

Katalon Studio is a comprehensive test automation tool with built-in support for API testing. It offers features like record and playback, data-driven testing, and CI/CD integration, it caters to manual and automated testing workflows. With Katalon you can scale testing with AI.

12. Assertible

Assertible is an API testing and monitoring platform, offering features like automated testing, webhook testing, and error tracking. It integrates seamlessly with popular CI/CD tools like Jenkins and Travis CI.

13. Tricentis Tosca

Tricentis Tosca is an enterprise-grade test automation platform with built-in support for API testing. It offers features like model-based testing, end-to-end testing, and test data management. It is ideal for large-scale testing exploration. Tosca offers all kinds and levels of testing, from API testing, exploratory testing, to system integration testing, regression testing, etc. This tool will be useful if you want to get more for your buck.

14. Runscope

Runscope is a paid cloud-based API testing and monitoring platform, offering features like automated testing, traffic inspection, and performance monitoring. It integrates seamlessly with collaboration tools like Slack and PagerDuty. With Runscope you can proactively monitor API service performance to immediately catch and debug API problems fast.

15. ReadyAPI

ReadyAPI provides a suite of tools for API testing, including SoapUI for functional testing, LoadUI for performance testing, and ServiceV for virtualization. ReadyAPI allows users to create and execute functional tests for both SOAP and REST APIs. It supports features like data-driven testing, assertion scripting, and automated test generation.

It also integrates with popular CI/CD tools, source control systems, and collaboration platforms, allowing seamless integration of API testing into the development workflow.

Conclusion

Postman is a very popular and effective tool; but it is helpful to learn about other options that are more lightweight and effective for specific use cases. By exploring these alternatives, you can find the perfect fit for your API development and testing workflows in 2024 and beyond.

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Testsigma Inc.

Testsigma is a completely cloud-based codeless test automation tool that lets you create stable and reliable tests for web, mobile & APIs — all from one place.