Simplest possible examples of HTML, CSS and Javascript:

Simplest WebRTC ever

simple socket.io server for webrtc signaling

A sax style parser for JS

WebSocket emulation - Javascript client

Clean up user-submitted HTML, preserving whitelisted elements and whitelisted attributes on a per-element basis. Built on htmlparser2 for speed and tolerance

JavaScript parser / mangler / compressor / beautifier toolkit

🏊🏾 Simplified HTTP request client.

Node canvas is a Cairo backed Canvas implementation for NodeJS.

qr code generator

IP address tools for node.js

Cross-browser QRCode generator for javascript

file downloading using client-side javascript

Lazarsoft's jsqrcode as a node module, object oriented, maintained and with tests

reimg - A javascript library for converting image formats

A Node.js module for inspecting and debugging Node applications through a web browser

Ethereum JavaScript API

Simple to use, blazing fast and thoroughly tested WebSocket client and server for Node.js

SSH2 client and server modules written in pure JavaScript for node.js

Javascript QRCode scanner

Node.js RSA library

Jcrop (official) - Image Cropping Plugin for jQuery

The Go programming language

Build cross platform desktop apps with JavaScript, HTML, and CSS

Build your NW.js apps for Mac, Win and Linux programmatically or via CLI

🎉 create a single executable out of your node.js apps

Call all Node.js modules directly from DOM and enable a new way of writing applications with all Web technologies.

Face recognition with deep neural networks.

Node.js Foreign Function Interface