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A Python property-based testing library that generates inputs to challenge the properties your code should preserve.

A Java testing library that starts disposable Dockerized dependencies for integration tests.

Describe mobile and web UI journeys as YAML flows and run them on a real or virtual target.

Use mutation testing to see whether a JVM test suite catches deliberately changed code.

A Go library for verifying infrastructure code by deploying it, checking behavior, and cleaning up resources.

Write API, UI, performance, and mock tests in readable feature files using one test framework.

A TAP-compliant test framework for checking Bash scripts and command-line programs.

Check whether independently developed services agree on the HTTP and message contracts they use.

Model performance scenarios for applications and APIs, generate virtual-user load and analyze run results.

Elixir's built-in unit-testing framework for test cases, assertions, callbacks, and doctests.

A dynamic application security testing service that scans web applications for vulnerabilities and supports follow-up remediation.

Load test websites, applications, and APIs with scripted browser or protocol bots, then inspect performance reports.

A desktop UI-test IDE that records, replays and reports tests against mobile apps, desktop programs and games.

Run JavaScript or TypeScript end-to-end tests against web applications in modern browsers.

Run JavaScript tests with built-in assertions and mocks for checking code behavior and dependency interactions.

Apple's Mac IDE for building, testing, debugging, and distributing apps for Apple platforms.

Mock HTTP services so application tests can exercise request and response behavior without a live dependency.

Author readable keyword-driven acceptance tests and run them from the command line with structured result reports.

Compare font-family revisions through rendered words and font data.

A PowerShell framework for unit, integration, and environment tests with mocking and CI reports.

AI agents test live web and mobile apps on every pull request

Enterprise platform for testing, monitoring and evaluating AI systems in production

A .NET unit-testing framework for C#, F#, and Visual Basic projects.

A container-level chaos tool for disrupting Docker, containerd and Podman workloads with lifecycle, network and resource faults.