According to the recent reports, the interest in API Testing Tools has increased in the past year. As a software or application developer, you need to use reputed API testing tools. 

Are you wondering, which is the best API Testing tool available in the market now? Need help to choose one? You don’t need to worry. You are in the right place. 

Here in this article, you will get to know about the API Testing tools and the best ones out in the market. Okay so without further ado let’s start the article with a short introduction to API Testing tools. 

What is an API Testing Tool? 

The API stands for Application Programming Interface, which is software used to test or measure the performance, functionality of the developed application. It is a type of software testing used when there is no GUI to do front-end testing. 

Due to the nature of the API Testing, they cannot be done manually, thus adopting a suitable automated API tool in your continuous development process can help you to detect the problems early. 

List of top API Testing Tools

Here are the top 10 API Testing Tools available in the market –

1.Postman

It entered the market as the Google Chrome plugin and now expanded to Mac and Windows. If you wish to have low-cost yet reliable API testing tools then Postman is the best choice for you. 

It comes with automated testing, exploratory testing, and supports Swagger and RAML formats. Another advantage is that it has a free version and the premium version costs only $12 per month. 

2.SoapUI 

SoapUI is the best for API testing with drag and drops and points and clicks options. It enables testing the web services like REST and SOAP APIs. 

It is functional API testing Tools that are available as both a free and premium package. The Premium package costs 640 Euros per year which has advanced features like Data-driven testing, Synthetic data generation, etc… 

3.Katalon Studio 

Katalon Studio is also a free API testing tool that works with API, Web, and Mobile applications, and the increasing demand for API testing tools created more demand for katalon Studio. 

Like the previous ones, it also supports SOAP and REST requests, automated and exploratory testing. And it is easily accessible to non-tech savvy people as well as professionals. 

4.ACCELQ

It is the only cloud-based API testing tool that is integrated with UI Testing. It is claimed that ACCELQ customers can save 70% of the cost involved in the change and testing process. 

However, it has less brand recognition compared to its competitors. It is best for Automated testing design, 360 trackings, API regression planning, etc…

5.Apigee

It is a cross-cloud API testing tool. It allows users to access its features using other editors like Swagger. It provides a multi-tool powered by the Java Script. 

API traffic and error tracking, response time checking, creating API proxies, are the important features of Apigee and it is compatible with enormous data. Its costs differ based on the type of packages you buy. 

6.Karate DSL 

If you are looking for API testing to test API-based BDD then Karate DSL is the best choice for you. It has an inbuilt scenario thus you don’t need to write down the step definitions manually. 

This makes the API testing process easier, and you can write the scripts using JAVA or any other language that is compatible with JSON or XML. It has an open-source licensing thus free of charge. 

7.Assertible 

It lays its main focus on reliability. Its results and solutions are accurate and Assertible offers various features like- Support HTTP responses, testing after launch, and is compatible with Github, Slack, etc…

It has a free and premium plan. The premium plan cost differs based on the package you choose, which varies from $25 per month to $500 per month. 

8.API Fortress 

As the name suggests, it is a fortress for API testing, it has various features like building, execution, and automation of the testing process. It is one of the best Functional API testing tools out there in the market. 

The price range of the API Fortress varies from $1,500 to $5,000 per year. 

9.Rest Assured 

It is an API tool that assures easy testing REST services. It is an open-source tool and based on the JAVA domain. Like the previous tools, it also provides seamless integration of UI and other authentication mechanisms. 

As an Open software, the tool is free but not the solution. 

10.JMeter

Last but not least is the JMeter. It is the best API Tool for load testing. Its latest version released in December 2020 is widely popular among software developers and fixes various bugs. 

It is compatible with CSV files and free to use as Open source software. 

Conclusion

The recommended API testing tool is the Postman or SoapUI. However, you may choose anyone on this list based on your budget and preference. 

If you have any further questions please leave them in the comment section below. 

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