Materialize by Materialize Team is a responsive front-end framework that translates Google’s Material Design principles into a practical toolkit for web developers. With elegant default styles, ready-made components, and mobile-first responsiveness, Materialize allows you to create aesthetically consistent, user-friendly websites quickly and with minimal setup.

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Bootstrap by The Bootstrap Team (originally developed at Twitter) is the world’s most popular open-source front-end framework for building responsive, mobile-first websites and web applications. With a powerful grid system, pre-designed components, and extensive customization options, Bootstrap accelerates development without sacrificing flexibility or design quality.

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Froont by Froont Inc. is a browser-based web design tool that empowers designers to build fully responsive websites visually—without touching a single line of code. Designed for creatives who want freedom from templates and rigid CMS platforms, Froont brings modern web development into a purely drag-and-drop, intuitive interface.

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Blocs by Blocsapp.com is a fast, visual web design tool for macOS that lets you build modern, responsive websites without writing code. Combining professional-grade control with beginner-friendly simplicity, Blocs uses a modular “block-based” approach that makes web design intuitive while still producing clean, semantic HTML and CSS.

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