API Testing Tools Questions & Answers

Several tools are commonly used for API testing in the software testing industry. Prominent options include Postman, SoapUI, Apache JMeter, REST-Assured, Karate DSL, and Tricentis Tosca, among others. These tools provide various features for designing, executing, and analyzing API requests, as well as validating responses.

For self-hosted API testing in 2025, especially with a focus on security, Katalon Studio stands out as a strong contender, offering both a no-code interface and a rich suite of testing features.

An AI-powered automated app store optimization (ASO) tool can be a valuable asset, particularly for streamlining and improving ASO processes.

Some popular choices include AppTweak, App Radar, Mobile Action, and Sensor Tower.

Testing an API validates its functionality, reliability, performance, and security by verifying that it meets specifications. Consuming an API, on the other hand, is the act of using the API to access its resources and functionality in a client application.

There isn't one single 'best' API testing tool, as the ideal choice depends on specific needs and preferences. However, Postman, SoapUI, JMeter, and ReadyAPI are consistently cited as leading options. 

Postman, ReadyAPI, REST-Assured, Karate DSL, JMeter, Swagger.io, Apigee and Katalon Platform are all really goood tools for testing backend services efficiently.