What are load testing tools? Load testing is the process of putting the application under stress by simulating large number of users by sending requests to it at a high speed. One can find numerous performance testing tools out there that will assist you in conducting load tests. When deciding on the best load testing tools for your needs, instead of reinventing the wheel, it’s important to know what kind of tool is needed.
A lot of people ask about performance testing tools for api. And that’s a good question because there are so many different options and so much to consider. From open source and DIY tools, to cloud hosted and on-premise solutions, you need to match the right tool with your specific project and budget. So we broke out all of the details in an easy-to-read guide — performance testing tools for api . After reading this you’ll be able to determine which is right for you.
ReadyAPI
ReadyAPI Price: The pricing options available with ReadyAPI are SoapUI (Starts at $659 per year), LoadUI Pro (Starts at $5999 per year), ServiceV Pro(Starts at $1199 per year), and ReadyAPI (Custom pricing. Get a quote). You can try the Ready API for 14 days for free.
SmartBear provides the ReadyAPI platform for the functional, security, and load testing of RESTful, SOAP, GraphQL, and other web services.
In one intuitive platform, you will get four powerful tools, API functional testing, API performance testing, API security testing, and API & Web virtualization. This platform will help you to ensure end-to-end quality for all web services.
It provides flexible automation options for integrating API testing into your CI/CD pipeline during every build. You will be able to create comprehensive and data-driven functional API tests.
Features:
- ReadyAPI can be integrated into any environment.
- It has a Smart Assertion feature that can create bulk assertions against hundreds of endpoints quickly.
- It provides native support for Git, Docker, Jenkins, Azure, etc.
- It also supports Command-line for automated testing.
- It supports parallel execution of functional tests and job queuing.
- It provides features and functionalities for reusing the functional tests and generating realistic load scenarios.
- ReadyAPI also provides features for removing dependencies during testing and development.
Best For: This platform works best for DevOps and Agile Teams. It is the best tool for the functional, security, and load testing of RESTful, SOAP, GraphQL, and other web services.
ACCELQ
ACCELQ – Codeless API Test Automation, seamlessly integrated with UI Testing.
ACCELQ is the only cloud-based continuous testing platform that seamlessly automates API and web testing without writing a single line of code. IT teams of all sizes use ACCELQ to accelerate their testing by automating critical aspects of lifecycle like test design, planning, test generation, and execution.
ACCELQ customers typically save over 70% of the cost involved in the change & maintenance efforts in testing, addressing one of the major pain points in the industry. ACCELQ makes this possible with AI-powered core to bring self-healing automation amongst other unique capabilities.
Design and User experience focus is at the heart of ACCELQ’s continuous innovation approach with a relentless effort to accelerate testing and improve delivered Quality for its customers.
Key Capabilities:
• Zero code API Test Automation on Cloud
• API and UI Test Automation in the same simplified flow
• API Test Case Management, Test Planning, Execution and tracking governance
• Dynamic Environment management
• Chain API Tests for true end-to-end validation
• Simple and Automated change impact analysis of API Test suite
• Regression suite planning with requirements tracking correlated with business processes
• Execution tracking with full visibility and defect tracking integrations
• Directly correlate Business process and corresponding API for complete coverage
• Seamless CI/CD and Jira/ALM integration with natural traceability
• No vendor lock, extendible framework open-source aligned
Best For: ACCELQ automates API testing with automated test design, codeless automation logic, complete test management, API regression planning & 360 trackings.
SoapUI Pro
SoapUI Pro is a very popular and most powerful testing tool for SOAP web services functional testing as well as REST API functional testing. It provides complete API Test Automation Framework for SOAP and REST.
Tool Highlights:
- World’s leading tool for REST & SOAP web service testing
- Easy to use GUI, with features like point-and-click, drag-and-drop, and pre-built security scans
- Quick creation and execution of automated tests – functional, regression, load, and security
- Powerful data-driven testing allows you to use external data sources to keep your tests more maintainable
- Provides end to end test coverage under a single test environment
- Easily reuse functional tests as load tests in LoadUI Pro
- Built on the same foundation as the award-winning SoapUI open source
- Supports all protocols and standards
Source code: SoapUI Pro has both open source and licensed version.
Katalon Studio
Katalon Studio is an all-in-one automation tool that has simplified API and web testing for over 850,000 teams and businesses.
Also extending capabilities to help scale mobile and desktop testing, some of it key features are:
- A friendly UI and simple test creation with record & playback, built-in keywords, pre-defined project templates.
- Easy tests migration from SoapUI, Postman and WSDL.
- Handles REST, SOAP/1.1 and SOAP/1.2 requests.
- Support self-healing mechanism, data-driven testing, page-object model pattern and BDD to ease maintenance efforts.
- Maximize test reusability with shared capabilities and test objects across projects.
- Generate reports with insightful graphs of essential metrics and real-time notifications after each execution (Slack, Git& Microsoft Teams).
TestMaker
Testmaker supports Web Service testing for SOAP and REST services.
Tool Highlights:
- A single test script can be put as an answer to functional, load & performance testing as well as production monitors.
- Surfaces performance & functional issues in web services
- Works on push to test methodology
- Offers easy migration
- Tests can be executed on grid and cloud.
Swagger.io
Price: There are three plans for Swagger Hub, Free, Team, and Enterprise.
The price for the Team plan is $30 per month, for two users. For this plan, you can select the number of users as 2, 5, 10, 15, and 20. The price will increase as the number of users go up.
The third plan is an Enterprise plan. Enterprise plan is for 25 or more number of users. Contact the company to know more about this company.
The Swagger is a tool that will help you through the entire lifecycle of an API. This tool will allow doing a functional, performance, and security testing of API.
Swagger Inspector helps the developers and QAs to manually validate and explore the APIs in the cloud. Load and performance testing is performed through LoadUI Pro. It will allow you to reuse the functional tests of SoapUI. Swagger provides many open source tools.
Features:
Swagger provides the following features related to API:
- API design and development
- API documentation
- API Testing
- API Mocking and Virtualizations
- API Governance and monitoring
Best For: Tool is best for API designing.
REST-Assured
Price: Free.
REST-Assured makes testing of REST services in the Java domain easy. It is an open-source tool. XML and JSON Requests/Responses are supported by REST-Assured.
Features:
- Seamless integration with the Serenity automation framework.
- It provides some baked-in functionalities.
- It supports the syntax of BDD Given/When/Then.
- To use the tool, it is not necessary to be an HTTP expert.
Best For Testing REST API.
Conclusion:
Frequently we come across the problem of writing tests for APIs. Even if we do not know much about performance testing tools for API, we can learn a lot from it. Although there is no such thing as a best testing tool, as they differ based on each company’s type and size, but what is important is to find the best testing tool for us.