Best API Testing Tools for Cloud

"Parasoft delivers an AI‑powered software testing platform that helps organizations continuously release high‑quality software. Our solutions support embedded and enterprise teams by integrating code analysis, testing, virtualization, and coverage into the delivery pipeline to improve security, reliability, and compliance while reducing cost and effort. Parasoft C/C++test provides static analysis, unit testing, code coverage, and requirements traceability for C and C++ applications. It integrates with Eclipse and Visual Studio, supports CI/CD automation, and is TÜV‑certified for safety‑ and security‑critical systems. Parasoft C/C++test CT is a scalable, compliance‑ready solution for C and C++ teams. It integrates into CI/CD workflows, supports open‑source unit testing frameworks, containers, VS Code, Bazel build systems, eliminates IDE dependencies, and is TÜV‑certified for safety‑ and security‑critical development."

Are bugs slipping through your QA process and frustrating your customers? Catching issues early shouldn’t mean overwhelming your team with time-consuming tests. With MuukTest’s AI-driven platform, growing engineering teams reach 95% end-to-end test coverage in just 3 months, delivering quality at speed. By leveraging AI, our QA experts rapidly design, manage, and maintain comprehensive E2E tests for web, mobile, and API applications on the MuukTest platform. Within 8 weeks, we deliver full regression coverage, followed by exploratory and negative testing to uncover hidden bugs and expand test scenarios. We also proactively identify and address flaky tests and false results to ensure the reliability of your tests. Testing early and often allows you to detect bugs in the early stages of your development lifecycle, reducing the burden of technical debt down the line.

Testim is the fastest path to resilient end-to-end tests—codeless, coded or both. Testim lets you create amazingly stable codeless tests that leverage our AI, but also the flexibility to export tests as code. You can leverage Testim’s modern JavaScript API and your IDE to debug, customize or refactor tests. Store them in your version control system to keep them in sync with branches and run tests on every commit. Run parallel, cross-browser tests on our test cloud or Selenium-compatible grids while integrating with your CI and dev tools to run smoke tests on pull requests, end-to-end tests on release candidates, or full regression suites on a schedule. Customers like Microsoft, Salesforce, NetApp, Wix, and JFrog run millions of tests on Testim each month. Learn more on our website and sign up for your free account!

Build. Test. Automate. Empower your whole team to build and maintain automated tests, not just developers. Meet your testing demands fast. Get full test coverage in days, not months. Our natural-language tests are extremely stable to code changes. When tests break our AI will repair it in minutes. Go Agile/DevOps by setting up Continuous Testing. Push features in production the same day. Boozang supports the following test approaches: - Codeless Record/Replay interface - BDD / Cucumber - API testing - Model-based testing - HTML Canvas testing The following features makes your testing a breeze - In-browser console debugging - Screenshots to show where test fails - Integrate to any CI server - Test with unlimited parallel workers to speed up tests - Root-cause analysis reports - Trend reports to track failures and performance over time - Test management integration (Xray / Jira)

Cerberus Testing is a low-code software testing automation enabling continuous testing at scale. Using the solution you can remove years of implementing an internal testing framework. The product enables you to quickly iterate through your testing lifecycle, from test repository, execution, reporting and analytics. The solution allows the collaboration of the teams from the use-cases definition to the test case execution on the variety of browsers, devices, apps and APIs. You can leverage your own or external robots infrastructure to execute your test at scale, enabling you to focus on your business value. It supports various integrations for speed of implementation such as Jenkins, Bitbucket, Slack, Kafka. It is available and maintained in open-source by various digital and retail players such as La Redoute, Decathlon, Adeo, and Norauto.

Testsigma is an AI-native quality intelligence platform that gives QA and engineering leaders the evidence to answer that question. It compares test coverage against what is actually being built and produces a release confidence score with known confidence bounds. When gaps are found, Testsigma closes the loop: AI agents generate the missing tests, run them with self-healing, diagnose failures, and file complete bug reports. For teams that need comprehensive test execution, Testsigma supports web, mobile, API, and Salesforce testing with cross-browser and cross-device execution at scale on real devices. Testsigma serves mid-market and enterprise engineering teams across financial services, insurance, healthcare, manufacturing, retail, public sector, and technology. Recognized by Gartner in the Market Guide for AI-Augmented Enterprise Application Testing Tools and by Forrester in the Autonomous Testing Platforms Landscape.

T-Plan Robot automates scripted user actions for Test Automation or Robotic Process Automation (RPA) on Mac, Windows Linux & Mobile. T-Plan develops and sells two main toolsets. 1) Test Automation and 2) Robotic Process Automation (RPA). T-Plan Robot is a highly flexible, easy to use, image-based black box GUI automation tool that creates robust automated scripts and exercises applications in the same way as would an end-user. T-Plan Robot is platform-independent (Java) and runs on, and automates all major systems such as Windows, Mac, Linux and Unix plus mobile platforms. We believe we have a solution for any environment. GUI automation interacts with your business sponsor and development teams throughout the whole project lifecycle. Working intuitively at the screen level business analysts can help testers drive testable paths through the application, whilst at the same time combining with the development team to define repeatable actions to test code in continuous development.

TAST, Test Automation System Tool is a comprehensive cloud test automation framework that enables businesses to maximize their test automation across the complete testing process from an End User´s perspective. It is easy to use and its graphical interface defines the automated test cases across technological platforms. TAST automates: *Cross Browser testing *Mobile testing *Desktop applications testing *DDBB testing: Oracle, PostgreSQL, MySQL, Db2. *File testing: txt, pdf, word, excel, csv, xml. *Mainframe testing: AS400, Host *APIs testing *Interface testing. *Remote Server testing. Types of tests you can automate with TAST: *Integration *Functional *System: Regressive, stress, load, parallel *Acceptance *A/B.

Telepresence streamlines your local development process, enabling immediate feedback. You can launch your local environment on your laptop, equipped with your preferred tools, while Telepresence seamlessly connects them to the microservices and test databases they rely on. It simplifies and expedites collaborative development, debugging, and testing within Kubernetes environments by establishing a seamless connection between your local machine and shared remote Kubernetes clusters. Why Telepresence: Faster feedback loops: Spend less time building, containerizing, and deploying code. Get immediate feedback on code changes by running your service in the cloud from your local machine. Shift testing left: Create a remote-to-local debugging experience. Catch bugs pre-production without the configuration headache of remote debugging. Deliver better, faster user experience: Get new features and applications into the hands of users faster and more frequently.

ACCELQ is a codeless, agentic AI testing platform that supports web, mobile, API, desktop, and packaged applications, including SAP, Salesforce, Oracle, Workday, MS Dynamics, nCino, Coupa, and ServiceNow. Its Autopilot brings together a set of AI agents that can explore an application, create and execute tests, investigate failures, make the required fixes, and rerun tests automatically. Test automation can be created in plain English, without relying on traditional scripting. Self-healing locators and Anchor Elements also help keep tests reliable when the application changes. ACCELQ was named a Leader in The Forrester Wave™: Autonomous Testing Platforms, Q4 2025. It received the highest Current Offering score and was the only vendor recognized as a Customer Favorite in the evaluation. ACCELQ also received the 2025 AI Breakthrough Award. Customers have reported 7.5x faster automation development, 72% less test maintenance, and a 53% reduction in costs compared with scripted testing.

HCL OneTest provides software testing tools to support a DevOps approach: API testing, functional testing, UI testing, performance testing and service virtualization. It helps you automate and run tests earlier and more frequently to discover errors sooner — when they are less costly to fix. HCL also provides a bundled offering under a new consumption model that changes the way you can use and deploy DevOps software. The new offering helps simplify your planning for adoption and growth of critical DevOps products. HCL OneTest UI enables testers to take automation all the way from mainframe terminals with 3270 interfaces, through .NET- and Java-based thick client applications. Additionally, it works with the latest top browsers, ERP systems such as SAP and Oracle, right up to HTML5-based responsive web applications that are built on modern frameworks like Angular, React and Vue.js.