Gstack

A headless browser wrapper that turns web testing into simple commands. Navigates pages, clicks elements, fills forms, takes annotated screenshots, and diffs before/after states. The session management is solid, it handles uploads and responsive layouts without fuss, and the screenshot annotations actually help when filing bug reports. What makes it useful is the "boil the lake" approach where it captures more evidence than you think to ask for. Good for deployment verification, user flow testing, or when you need to reproduce a bug with visual proof. The telemetry and proactive suggestion system feels thoughtful rather than invasive.