API Testing Organizations

These are the organizations I come across in my research who are doing interesting things in the API space. They could be companies, institutions, government agencies, or any other type of organizational entity. My goal is to aggregate so I can stay in tune with what they are up to and how it impacts the API space.

API Fortress

Test. Monitor. Automate: API Fortress is an enterprise cloud solution to test, monitor, and automate the testing of APIs and web services. Create a response validation test using our simple wizard, schedule the test to run multiple times a day, and monitor the updates sent to your inbox.


APIBond is an API management platform that acts as a proxy where you can validate, transform, secure, analyze and scale any existing API.


Apica provides the most effective technology for optimizing the performance of cloud and mobile applications. Apica offers companies and developers alike easy-to-use, cloud-based load testing and web performance monitoring tools to test applications for maximum capacity, daily performance, improved load times, and protection from peak loads. For more information about how Apica is providing the highest standard for cloud and mobile application performance management.

Apigee API Studio

Apigee launched their API Studio out of their earlier Apigee-127 product, their work on the Swagger platform and editor, and their BaaS offering. The new studio opens up the ability for developers to design, mock, test and share via their online open source based platform.


apiTest.io is the new testing tool to test all your API requests, easy to use with request and results saving. With our preconfigured API calls it is easy to test some popular websites or your own HTTP(s), REST, SOAP, OAUTH server.


Building Apps that depend on APIs speeds up development and helps make software all-round more awesome. However, tracking and managing traffic flows to these APIs, reacting if they slow down or fail, dealing with version changes and the like can add massive overhead to development and operations.


Gain confidence in crucial infrastructure by using Assertible's automated QA tools to test and monitor your web services across deployments and environments. Reduce bugs in web applications by using Assertible to create an automated QA pipeline that helps you catch failures and ship code faster.


AWS X-Ray helps developers analyze and debug production, distributed applications, such as those built using a microservices architecture. With X-Ray, you can understand how your application and its underlying services are performing to identify and troubleshoot the root cause of performance issues and errors. X-Ray provides an end-to-end view of requests as they travel through your application, and shows a map of your applications underlying components. You can use X-Ray to analyze both applications in development and in production, from simple three-tier applications to complex microservices applications consisting of thousands of services.

Azure Application Insights

Get rich performance monitoring, powerful alerting, and easy-to-consume dashboards to help ensure your applications are available and performing as you expect. Quickly see if you have a problem, how many customers are affected, and perform a root cause analysis to find and fix the issue.

Azure DevTest Labs

Azure DevTest Labs makes it easy to quickly create environments to deploy and test applications. Use reusable templates and artifacts to build Windows and Linux environments while minimalizing waste and controlling costs.


BAD TESTING offers software testing consulting services and helps you manage risks associated with technology changes. We offer an advanced and versatile skill set in software quality assurance, testing, and configuration to ensure effectively and on time product releases. We are experts at testing and evaluating both hardware and software products to identify and resolve all potential issues for both start ups or established environments.


BlazeMeter is a self-service, load testing platform (PaaS) for developers providing an enterprise grade, out-of-the-box load testing solution. Start testing in under five minutes. BlazeMeter significantly simplifies the load testing process by providing developers easy integration into their native development environment.


BugBuster provides a full suite of functional testing tools. We make it easy to build functional tests and automate the repetitive manual testing of your site.

Catch Software

Catch Software makes test management software, execution and integration tools that help QA professionals get more out of their testing effort. Our flagship product, Enterprise Tester, is test management software which was released in early 2009 and is built by QA professionals for QA professionals, Enterprise Tester provides testers with easy management of test plans, execution sets, requirements, and incidents.


Test your website in dozens of browsers and real devices with instant results. Over one thousand combinations of browsers, OSs, and devices. With CrossBrowserTesting.com, you can test your sites on more than 1500 browsers across more than 65 operating systems, including iOS, Android, Windows, Mac and more.

Crosscheck Networks

Crosscheck Networks is the global leader in API Testing, Simulation, and Gateway technologies with product deployments in over 50,000 customer networks worldwide. Comprehensive API testing includes functional automation, performance, compliance and security testing with patented dynamic mutation technology.


Cucumber lets software development teams describe how software should behave in plain text. The text is written in a business-readable domain-specific language and serves as documentation, automated tests and development-aid - all rolled into one format.


Firebase is a mobile platform that helps you quickly develop high-quality apps, grow your user base, and earn more money. Firebase is made up of complementary features that you can mix-and-match to fit your needs.

Flood IO

Flood enables you to generate load from any AWS region, using your own account or ours to achieve the most realistic traffic scenarios. We collate all the results for you, so you can spend more time testing. We sort out the infrastructure, so you can spend more time testing. We've built a massive distributed shared nothing infrastructure which lets you scale out on demand. You'll enjoy much better economies of scale on Flood than you can on our competitors.


Frisby is a REST API testing framework built on node.js and Jasmine that makes testing API endpoints easy, fast, and fun. Read below for a quick overview, or check out the API documentation.

Google Stackdriver

Google Stackdriver provides powerful monitoring, logging, and diagnostics. It equips you with insight into the health, performance, and availability of cloud-powered applications, enabling you to find and fix issues faster. It is natively integrated with Google Cloud Platform, Amazon Web Services, and popular open source packages. Stackdriver provides a wide variety of metrics, dashboards, alerting, log management, reporting, and tracing capabilities.


GTmetrix can help you develop a faster, more efficient, and all-around improved website experience for your users. Studies show that users leave a site if it hasn’t loaded in 4 seconds; keep your users happy and engaged by providing a fast performing website! GTmetrix uses Google Page Speed and Yahoo! YSlow to grade your site’s performance and provides actionable recommendations to fix these issues. GTmetrix provides: full video capture of how your site loads from multiple regions around the world, performance monitoring and alerts for when your site dips below a given threshold, easy to use API for integration with other sites, and much more!

Load Impact

Load Impact is an online load testing service for websites, web apps, mobile apps and APIs. The service allows users to run load tests over the Internet, rather than having to set up their own load testing infrastructure to run tests. Tests are easily repeatable, with minimum preparation required, which also makes the service a good development/optimization tool.


Loader.io is a free load testing service that allows you to stress test your web-apps/apis with thousands of concurrent connections. We were born out of SendGrid Labs which is a new and growing internal effort at SendGrid. Born in late 2012, SendGrid Labs builds tools and services to help developers focus on their core business. We aim to provide creative and innovative solutions to common developer pain points, to make their lives easier, and to help them scale.


Load test with thousands of concurrent users. Monitor website uptime and perfomance. Measure website speed and get insights. Run load tests in the Cloud and stress your API with up to 50,000 concurrent users. Inspect results to optimise and improve performance.


Parasoft researches and develops software solutions that help organizations deliver defect-free software efficiently. By integrating development testing, API testing, and service virtualization, we reduce the time, effort, and cost of delivering secure, reliable, and compliant software. Parasoft's enterprise and embedded development solutions are the industry's most comprehensive—including static analysis, unit testing, requirements traceability, coverage analysis, functional and load testing, dev/test environment management, and more.


Postman on Chrome is the most efficient way to test, develop and document APIs. Create complex requests, go back in time and view results in a beautiful way. Postman has more than 80 features to help you at every step. Our user base is growing rapidly and with more tools in the pipeline, Postman aims to provide the most comprehensive API development and testing solution to developers.

REST United

Our mission is to help REST API providers easily create SDKs in different programming languages with easy-to-follow documentation and code samples while software developers can effortlessly consume the REST API by following the SDK installation instruction and using the code samples within minutes.


RestCase focuses on the REST API development cycle and enhances team collaboration, reduces development time, improves testing and increases overall product quality.

Restlet DHC

Call APIs to discover and validate their behavior, build and run complete test scenarios. Trying out an API to check its behavior usually involves writing a program or sending command line instructions to call the API


TheRightAPI is enabling the API community by providing solutions to make working with APIs easier. If you need to discover, trust, monitor and manage APIs, TheRightAPI is here to help. TheRightAPI provides the platform and intelligence developers need to establish and maintain successful next generation applications.


Runscope was started with the idea that depending on a web service API in a mobile or web application should be as easy as depending on code running locally. We’ve assembled a team of API, infrastructure and developer experience experts to build tools to support the modern application development lifecycle.

SmartBear Software

SmartBear Software provides tools for over 100,000 software professionals to build, test, and monitor some of the best software applications and websites anywhere on the desktop, mobile and in the cloud.


StopLight provides engineering teams with a new way to document, test, and build web APIs. Our technology easily and automatically maps an API, and then provides tooling and services to reduce development time, and increase reliability and accessibility.


Simplify, Automate and Speed-up REST API Testing


WebPagetest is used for measuring and analyzing the performance of web pages. There are a lot of options that may seem intimidating at first but doing quick testing is pretty simple. This guide will walk you through submitting a test and interpreting the results.

If you think there is an organization I should have listed here feel free to tweet it at me, or submit as a Github issue. Even though I do this full time, I'm still a one person show, and I miss quite a bit, and depend on my network to help me know what is going on.