Open-source projects tagged “responsive-design”

A low-code visual website builder for the Frappe Framework, with a Figma-like editor and one-click publishing.

Popular front-end framework of HTML, CSS and Sass/JavaScript components for building responsive, mobile-first websites.

An Electron-based desktop browser for testing websites across many device previews at once, with mirrored interactions and an MCP server for AI agents.

A utility-first CSS framework for building custom user interfaces directly in HTML and JSX with small single-purpose classes.