Meteor

Meteor is a fiercely unique, highly robust, and historically disruptive platform that completely revolutionized the "Full-Stack, Real-Time JavaScript" sector. In a standard app, a developer has to write the backend API, the frontend UI, and the complex WebSocket code to connect them. Meteor is an "Isomorphic" framework. You write one set of JavaScript code, and Meteor magically handles the database, the server, and the browser simultaneously. The absolute core superpower of Meteor is its "Real-Time Data Sync (Distributed Data Protocol)." If you are building a chat app or a collaborative document (like Google Docs), Meteor is staggering. When a user updates the MongoDB database on the server, Meteor instantly, automatically pushes that exact change to the UI of every single other user connected to the app in milliseconds, without writing a single API endpoint. Because it allows a single developer to build highly complex, real-time, cross-platform apps (Web, iOS, Android) at blistering speeds, it retains a massive, dedicated following among agile startups and prototyping agencies.