API Test Base is a free tool for integration testing a variety of APIs. It is suitable for Integration, ESB and Microservices testing.


ArdorQuery is described as 'Cross-platform tool for performing any HTTP(S) endpoints like REST API, HTML, Images, GraphQL, OData etc' and is a API Client in the development category. There are more than 50 alternatives to ArdorQuery for a variety of platforms, including Mac, Windows, Linux, Web-based and Flathub apps. The best ArdorQuery alternative is Postman, which is free. Other great apps like ArdorQuery are Insomnia REST Client, Fiddler, Yaak and Hoppscotch.
API Test Base is a free tool for integration testing a variety of APIs. It is suitable for Integration, ESB and Microservices testing.


Apigee is a free tools platform for developers and API providers to debug, test, protect and get analytics on APIs.




Assertible is the easiest way to test and monitor your APIs and helps reduce bugs in web apps by providing tools to continuously validate endpoints and responses with a flexible interface to run your tests any time and place.




Bearer is a developer tool that helps engineering teams monitor API requests, track performance, detect anomalies, and fix issues for their critical API usage. The solution monitors all outgoing API requests without proxying traffic.




Automation-friendly framework for Continuous Testing. It makes sense to automate anything you repeat 10+ times. Taurus improves experience of JMeter, Selenium and others.

FRequest is a fast, lightweight and opensource Windows / macOS / Linux desktop program to make HTTP(s) requests (e.g. call REST apis).




Gotcha HTTP Client is a lightweight http client that allows you to make requests and inspect responses.




API integration platform for testing, prototyping, and running of any API flow. The right tool for successful API flow integration - nice, easy, simple, and cheap.


Resonance is a local-first, zero-account API client application designed to provide an excellent user experience for testing and interacting with APIs. Built with Tauri, it offers a modern and intuitive interface for developers.




