#Testing.
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Playwright
Playwright tests critical web journeys in Chromium, Firefox, and WebKit, combining isolation, meaningful assertions, and evidence that explains failures.
WebdriverIO
WebdriverIO automates browser and mobile interface tests for repeatable end-to-end checks in local and CI environments.
Bruno
Bruno is a local, Git-oriented API client for requests, tests, and reproducible CLI runs, storing collections as files without requiring cloud synchronization.
Insomnia
Insomnia organises API requests, environments, and specifications for development and review without replacing load or full contract testing.
MCP Inspector
MCP Inspector is a local open-source tool for interactive and scriptable MCP server testing; its process-spawning proxy must never be exposed to an untrusted network.
Puppeteer
Puppeteer automates Chromium for testing, screenshots, and controlled browser workflows when APIs, permissions, and terms allow it.