Packages

Command-line apps

• pen - Live Markdown preview in the browser from your favorite editor.

Command-line utilities

• Ink - React for interactive command-line apps.
• Bit - Create, maintain, find and use small modules and components across repositories.

Content management systems

• KeystoneJS - CMS and web application platform built on Express and MongoDB.

Documentation

• Docusaurus - Documentation website generator that leverages React and Markdown, and comes with translation and versioning features.

Mad science

• xlsx - Pure JS Excel spreadsheet reader and writer.

Static site generators

• Charge - Opinionated, zero-config static site generator using JSX and MDX.

Web frameworks

• Next.js - Minimalistic framework for server-rendered universal JavaScript web apps.
• Meteor - An ultra-simple, database-everywhere, data-on-the-wire, pure-Javascript web framework. (You might like awesome-meteor)