Responsive Viewer
responsiveviewer.org
Show multiple screens once, Responsive design tester
Components, icons, and colors for building high‑quality, accessible UI. Free and open-source.
Radix UI is an open-source component library optimized for fast development, easy maintenance, and accessibility.
Just import and go—no configuration required. You can import the styles and components and start building your app right away.
Radix UI offers a free plan with basic features, as well as two paid plans: Growth and Pro.
responsiveviewer.org
Show multiple screens once, Responsive design tester
framer.com
An open source, production-ready motion library for React on the web.