Top 5 Opensource Alternative of Postman

Postman is a great tool but it might not fit everyone. Since it's a tool for developers you can be sure there are many other similar tools that do stuff a little bit different. So whatever the reason is that you want to replace Postman check the list below. Thousands of other users has provided their opinion about what they like the most.

1. Advance REST Client

Advanced REST client allows you to test your APIs. Easy and clean user inteface helps you focus on your API and not tooling. Store your requests and projects on Google Drive and share it with your team.

Website: https://install.advancedrestclient.com/install



2. Insomnia REST Client

A powerful REST API Client with cookie management, environment variables, code generation, and authentication for Mac, Window, and Linux.

Website: https://insomnia.rest/


3. APIMAN

The apiman project brings an open source development methodology to API Management, coupling a rich API design & configuration layer with a blazingly fast runtime.

Website: https://www.apiman.io/latest/


4. SoapUI

SoapUI is the only open source tool that covers the entire testing spectrum (functional, security, load, mocking). With its easy-to-use graphical interface, SoapUI is the entry point for API testing so you can validate REST & SOAP-based web services with ease.

Website: https://www.soapui.org/tools/soapui/


5. RESTClient

RESTClient is a Java application to test RESTful webservices. It can be used to test variety of HTTP communications. There are two executables:
- GUI version (restclient-ui-X.jar download)
- Cli version for batch execution of .rcq files (restclient-cli-X.jar download)

Website: https://github.com/wiztools/rest-client