Alternatives to Selenium Boot

Microsofts open-source end-to-end browser testing framework for Chromium, Firefox, and WebKit with one API.

Hybrid CI/CD where the control plane is hosted but the build agents run on your own infrastructure.

Open-source workshop for building UI components in isolation. Preview, document, and test them outside the app.

API client and collaboration platform that started as a Chrome extension and now covers design, testing, and mocking.

Test and monitor conversational and data agents with adversarial scenarios and scored results

Build evals and custom benchmarks for real-world agent tasks

Independently test agent-written code and find failures before a pull request ships

Build reusable multi-step API tests without writing glue code

Free accessibility scanner that turns axe-core results into a plain-English fix list

Test, debug, and evaluate MCP servers across major AI clients

GPU health testing and validation platform for AI infrastructure running NVIDIA or AMD systems

A disposable, production-shaped copy of your app for every pull request, with an open-source engine

Test how AI coding agents discover and interact with your developer tools

An open-source fake company with emulated Slack, GitHub, mail, Stripe and S3 for local testing

Scan up to 10 website pages for WCAG accessibility issues without signing up