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Continuously fuzz accepted open-source projects to find crashes and other input-handling bugs.

Apple's framework for unit, performance, and UI tests in Xcode projects.

Route test traffic through a controllable TCP proxy to simulate latency, outages and other network faults.

Interactive email campaigns with AMP forms, journeys and fallback content

Build functional tests for SOAP and REST services from API requests and response assertions.

Generate API checks from OpenAPI or GraphQL schemas and exercise real endpoints with varied inputs.

A cloud grid for running browser and mobile application tests on remote devices.

AI agentic testing cloud for web, mobile, chat, voice and IVR

Test mobile and web applications manually or with automation on hosted devices and browsers.

Sender-independent email previews and quality checks with per-screenshot usage

AI-powered landing page builder with testing and personalization

Email API with delivery events and a shared usage balance

Mock HTTP dependencies, inspect traffic, and verify requests in integration tests.

Build hosted API simulations to test applications without waiting on live dependencies.

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.

A visual testing service that compares screenshots and other snapshots from CI builds against a selected baseline.

Compare application screenshots with approved visual baselines in automated UI tests.

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

Records web and mobile user flows as hosted automated tests, with AI prompts and run diagnostics.

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.