A toolkit for building rich-text editors on the web. An ideal content editor produces structured, semantically meaningful documents, but does so in a way that is easy for users to understand. ProseMirror tries to bridge the gap between Markdown text editing and classical WYSIWYG editors.

Zdog is a 3D JavaScript engine for Canvas and SVG. With Zdog, you can design and render simple 3D models on the Web. Zdog is a pseudo-3D engine. Its geometries exist in 3D space, but are rendered as flat shapes.

An extensive CSS reference with all the important properties and info to learn CSS from the basics.