Quill is a free, open source WYSIWYG editor built for the modern web. With its modular architecture and expressive API, it is completely customizable to fit any need.

MiniSearch is a tiny but powerful in-memory fulltext search engine written in JavaScript. It is respectful of resources, and it can comfortably run both in Node and in the browser.

This site teaches the CSS fundamentals that are used in any website's layout.