grapesjs

Building HTML templates for websites, newsletters or mobile apps usually means hand-writing markup and CSS for every layout, which slows down teams that need to ship pages quickly. GrapesJS is a free and open-source web builder framework that lets users assemble templates visually with drag-and-drop instead of coding them by hand. The library provides a block manager, a style manager, a layer manager, a code viewer and an asset manager, along with local and remote storage and built-in commands for creating and managing components. It was designed mainly to be embedded inside a CMS so that dynamic templates can be created and edited faster. GrapesJS is distributed through npm, CDNs and Git, and is intended for developers who want to add a no-code page editor to their own application. A large ecosystem of official and community plugins and presets, including webpage and newsletter builders, extends it further. The project is released under the BSD 3-clause license.