Blackbird API Development vs. Polypane Comparison Chart

Build better websites in less time with a stand-alone browser that makes your site more responsive, more accessible, and faster. Save hours on each project, and love every minute of it. Powerful dev tools, multiple synced viewports, full-height screenshots, over two dozen debug tools, device and media query emulation, built-in live-reloading, and more. Mobile screens to 5K monitors, get all viewports in one overview. Over 80 accessibility tests, 19 different simulators, and 20+ debug tools. Dark and light, reduced motion, screen, and print. No more manual switching! When you focus on devices you miss the hundreds of screen sizes your real users use. Check your own data. With Polypane's devices, CSS Breakpoint panes, and freeform sizing you can get the real full overview. Don't manually resize and test websites screen-by-screen. Get all your viewports in one overview, no browser resizing is needed.