| Tool | Protocol | Use Case | |------|----------|----------| | | W3C WebDriver | General cross-browser, on-prem grid | | Selenoid | Docker-native | Lightweight, high-density container grid | | BrowserStack/Sauce Labs | Cloud API | No infrastructure management | | Playwright | CDP | Fast, modern web apps (no server needed for parallel) | | Cypress | Network proxy | Component & E2E testing (not designed for Selenium Server) |
A classic distributed setup. The Hub acts as the central point that receives test requests and distributes them to registered Nodes based on browser and OS capabilities. selenium server