ExpressJS - Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple

HelpForShopping - Improve your sales performance by helping users find the most suitable product for them

Chart.js - Easy, object oriented client side graphs for designers and developers.

tawk.to - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page

FeathersJS - Wow your users. Build incredible real-time applications in record time.

Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.