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Best API Testing Tools in 2024

What are API Testing Tools?

API testing tools are software applications used to test the functionality, reliability, performance, and security of an API (Application Programming Interface). They help ensure that the API performs as expected under different conditions. Read Buyer’s Guideimg

Best API Testing Tools

(Showing 1 - 10 of 17 products)

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Runscope

Runscope

Brand: Perforce

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Runscope is an API testing software that allows developers to thoroughly test APIs to minimize the potential business disruptions.... Read More About Runscope read review arrow

$79

SoapUI

SoapUI

Brand: SmartBear

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Soapui Pro is a software used for testing APIs, without accessing the detailed processing knowledge of Application Programming Interface. This software mo... Read More About SoapUI img

Price On Request

Swagger

Swagger

Brand: SmartBear

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Swagger API Testing Software simplifies and enhances the testing process for APIs, offering robust functionality for test creation and execution.... Read More About Swagger read review arrow

Price On Request

RapidAPI

RapidAPI

Brand: Rapid

4.7img

4.7 out of 5

(1 user reviews)

Discover, design, monitor and publish APIs for various purposes with Rapid API testing software... Read More About RapidAPI read review arrow

$199 /month

Apigee

Apigee

Brand: Google

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Apigee is a world-class API management and predictive analytics software. It is an innovative software powered by Google for seamless and efficient opera... Read More About Apigee img

Price On Request

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Karate DSL

Karate DSL

Brand: Karate Labs

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Karate DSL API Testing Platform simplifies API testing with its expressive scripting language and built-in HTTP request capabilities.... Read More About Karate DSL read review arrow

$64 /month

Assertible

Assertible

Brand: Assertible

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Assertible offers robust and streamlined API testing capabilities, ensuring your web services are reliable and performant.... Read More About Assertible read review arrow

$25 /month

Testsigma API Testing

$399

Thunder Client

Thunder Client

Brand: Thunder Client

4.8img

4.8 out of 5

(3 user reviews)

Kasm Workspaces Desktop as a Service Software delivers secure, remote desktop solutions with seamless access to applications and data, enabling efficient c... Read More About Thunder Client read review arrow

$5 /month

Katalon Studio

Katalon Studio

Brand: KATALON

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Katalon Studio is a complete Testing Automation Software designed to serve Startups, SMBs, SMEs and Agencies. This Testing Automation Software for Web-Base... Read More About Katalon Studio img

Price On Request

Last Updated on : 25 Jan, 2024

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Best API Testing Tools FAQ’s

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answered

API testing software is a specialized tool used to assess the functionality, security, performance, and reliability of an application's interface (API). A crucial component of software testing is confirming that the API operates as planned. These tests can be conducted directly on the API or integrated into broader testing processes, ensuring the robustness of the software throughout its lifecycle.

Swagger Editor is a prominent software used for API design. It offers a web-based open-source editor that simplifies the process of designing and documenting REST APIs. With Swagger Editor, you not only create and visualize your OpenAPI definitions but can also improve the clarity and usability of your API documentation.

Here are the 3 types of testing in API; Functional testing Load testing Security testing

API tools are software solutions designed to test, manage, and optimize Application Programming Interfaces (APIs). These tools aid in evaluating the functionality, security, performance, and reliability of APIs, ensuring they operate seamlessly within the software development lifecycle.

The best API testing tools include; Accelq Apache JMeter Apigee  

Articles for API Testing Tools

API Testing Tools Price List In India

API Testing Tools Cost
Top API Testing Tools Starting Price Rating
RapidAPI$199.00 /month4.7
Thunder Client$5.00 /month4.8

Buyer's Guide for Top API Testing Tools

Found our list of API Testing Tools helpful? We’re here to help you make the right choice and automate your business processes. Let’s discover some of the essential factors that you must consider to make a smarter decision!

  • What are API Testing Tools?
  • Why Use API Testing Tools?
  • Who Uses API Testing Tools?
  • Key Features of API Testing Tools
  • Benefits of Using API Testing Tools
  • Top API Testing Tools in India
  • Factors to Consider When Buying API Testing Tools

What are API Testing Tools?

API testing tools are essential software programs made to assess the performance, security, dependability, and usefulness of Application Programming Interfaces (APIs). These tools are essential for guaranteeing that APIs work as intended in a variety of scenarios and use cases. By offering user-friendly interfaces and minimizing the need for extensive coding, API performance testing tools empower both experienced and novice developers to implement tests effectively.

API testing tools allow developers to assess how APIs perform, validate data exchanges, and confirm that security measures are effective. Furthermore, some of the API automation testing tools provide automation capabilities, streamlining repetitive tasks and enhancing the efficiency of the testing process. Whether you are interested in evaluating an API's performance, security, or overall functionality, the use of these specialized tools is essential for maintaining the reliability and quality of your APIs throughout their lifecycle.

Why Use API Testing Tools?

Here are some of the key reasons why using API testing tools is essential for successful software development;

  • Simplifying API Testing: API testing tools play a very important role in software development by simplifying the process of evaluating Application Programming Interfaces (APIs). These online API testing tools conduct what is known as black box testing, which involves probing the inner workings of an API without requiring user interaction or in-depth knowledge of the system's internal mechanics. This simplification is especially valuable for developers, as it ensures that an API can be properly implemented, while also promoting ease of use.
  • Versatile Testing Capabilities: API testing tools serve multiple essential purposes. Firstly, it verifies that API-based services can seamlessly interact with other applications for compatibility and interoperability. Secondly, it mimics client interactions so that it can identify the flaws in API responses. Additionally, it evaluates how well an application performs when integrated with other software, all while reducing the costs associated with manual testing and accelerating the testing process. Furthermore, the flexibility to execute API tests in various programming languages underscores the language-independent nature of these tools.

Who Uses API Testing Tools?

API Testing Tools are used by diverse teams for software development;

  • Utilization in DevOps: API testing tools are an invaluable asset in the toolkit of DevOps teams. Automation is a fundamental practice in DevOps, and API testing is often automated to ensure seamless integration of software components. By automating API testing, DevOps teams can validate the functionality and interoperability of their APIs, supporting the continuous delivery and deployment processes critical for agile software development.
  • Quality Assurance Teams: Quality assurance teams rely heavily on API testing tools to guarantee the reliability of software. These tools facilitate rigorous testing by sending requests to API endpoints and verifying system responses. This meticulous process helps identify any potential flaws in API responses, ensuring the highest quality of the software before it reaches end-users.

Key Features of API Testing Tools

Here are some of the important features of API testing tools;

  • Functional Validation: API tools for testing ensure functional validation in Application Lifecycle Management process by scrutinizing the inputs and outputs of API calls that helps developers identify and rectify functional discrepancies. This makes sure that the software system performs as intended and delivers the required functionality to end users.
  • Integration Testing: In contemporary software development, the integration of multiple APIs and services is commonplace. API penetration testing tools are used to verify the seamless interaction of these APIs. This process guarantees that the APIs collaborate effectively, exchange data accurately, and identifies and resolves integration issues prior to deployment.
  • Error Handling and Exception Testing: To maintain system stability and reliability, APIs must efficiently and accurately handle errors and exceptions. API testing tools evaluate API replies and expose possible problem situations, such as improper inputs or server failures. This ensures that APIs provide meaningful error messages and effectively manage exceptions in order to enhance user experience and avert system failures.
  • Performance and Scalability: APIs often face heavy usage and high traffic volumes. API testing tools are instrumental in evaluating an API's performance and scalability under varying load and stress conditions. Developers can identify bottlenecks, latency problems, or resource limitations through load and performance testing, which helps APIs manage and scale projected workloads.
  • Security and Authorization: API testing tools are also used for assessing the security and authentication mechanisms implemented in APIs. They help identify vulnerabilities, such as injection attacks or authorization gaps to fortify APIs and safeguard sensitive data.
  • Regression Testing: As software develops, new features might unintentionally cause problems or interfere with already-existing functionalities. API testing tools support regression testing, ensuring that API updates do not compromise existing functionalities. By retesting the API after each modification, developers can detect and rectify regression issues promptly. This also maintains the dependability and stability of the software system over the course of its lifetime.

Benefits of Using API Testing Tools

Using an API testing tool online can benefit in many ways;

  • Optimized Performance Analysis: API testing tools offer a significant advantage in evaluating the performance of an API. They help assess how efficiently an API operates under varying conditions, considering factors like request volume, data size, and network latency. These tools simulate different usage scenarios, enabling developers to measure response times, throughput, error rates, and the API's capacity to serve users.

    This thorough performance analysis aids in identifying potential bottlenecks, optimizing resource allocation, and ensuring the API can effectively handle its expected workloads.

  • Security Assessment: Security is a big concern in software development, and API testing tools are primarily used to evaluate an API's security measures. These tools rigorously test the API's ability to resist unauthorized access and potential breaches. By attempting to access the API from different locations and using various credentials, they help identify vulnerabilities.

    API testing tools ensure that sensitive data remains secure and the API maintains its integrity by evaluating authentication, authorization, encryption, and firewall mechanisms.

  • Functionality Testing: Through the process of submitting queries to the API and analyzing the results, API testing tools evaluate the functioning of an API. Developers can use these tools to understand how the API behaves under different conditions, including scenarios involving heavy user loads. The purpose of this functionality testing is to help find and fix any problems that may occur during actual use.

Top API Testing Tools in India

Here is the complete list of 10 of the best API testing tools in India;

Software Features Price
Runscope API Test Automation, Multi-protocol support, Integrations, Streamlined Workflows, API Monitoring Starting at $79
SoapUI API Driven, Test Analysis, Artificial Intelligence, Project Management, Dashboard Price On Request
Swagger API Test Automation, Integrations, Dashboard, Load Testing, UI Testing Price On Request
RapidAPI API Test Automation, Dashboard, Custom Branding, API Builders, Collaboration Tools Starting at $199
Apigee Access Control, Testing Management, Dashboard, Advanced Threat Protection, Analytics Price On Request
Karate DSL API Test Automation, Dashboard, Integrations, Flaky Tests, Performance Testing Starting at $52
Assertible API Test Automation, API Management, API Monitoring, Dashboard, Integrations Starting at $25
Testsigma API Testing API Test Automation, Parallel Testing, Integrations, Easy to Use, Test Management Tools Starting at $399
Thunder Client API Test Automation, Integrations, CI/CD Automation, Scalability, Scriptless Testing Starting at $5
Katalon Studio Analytics, API Based, Manage Records Price On Request

Factors to Consider When Buying API Testing Tools

The availability of API tools has increased dramatically on a global scale as a result of the growing importance of API testing in the software development process. While many tools can effectively assess APIs, only a select few excel in comprehensively evaluating every layer of your APIs. To help you select the right one, here are few factors to consider;

  • Optimized Workflows: Selecting the right API testing tool entails considering its workflow optimization features. The chosen tool should come equipped with smart functionalities that simplify and automate common tasks. These may include managing message flows, creating tests, formatting data, and integrating APIs. An effective workflow increases productivity and lowers the possibility of errors by streamlining the whole API testing process. 
  • Automation Capabilities: One of the central factors to evaluate when choosing API automation tools is their automation capabilities. An effective tool should empower organizations to automate the complete API testing process. This automation enables companies to execute test cases at any time or whenever necessary, aligning testing with integration and deployment processes. Additionally, a robust testing tool should offer a command line interface and support for all APIs within the API layer, allowing for comprehensive testing within the organization.
  • Test Management: Managing the API testing process can become complex as organizations grow and maintain numerous test cases. Therefore, when selecting API testing tools, it's crucial to consider their test management capabilities. A well-rounded tool should provide mechanisms for organizing and understanding available API tests and their requirements. This streamlined test management not only simplifies the testing process but also enhances the overall efficiency of API testing.

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