TinaCMS : Tina is an open-source site editing toolkit for React-based sites like Next.js & Gatsby to build content management directly into your website.
Styletron : Styletron is a universal CSS-in-JS engine built from the ground up for high-performance.
css3-mediaqueries-js : make CSS3 Media Queries work in all browsers (JavaScript library)
EtherPad : Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
enquire.js : A lightweight, pure JavaScript library for responding to CSS media queries.
