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MEAN STACK

The MEAN stack is a JavaScript-based framework for developing web applications. MEAN is named after  M ongoDB,  E xpress,  A ngular, and  N ode, the four key technologies that make up the layers of the stack.

M ongoDB — document database

E xpress(.js) — Node.js web framework

A ngular(.js) — a client-side JavaScript framework

N ode(.js) — the premier JavaScript web server

MERN STACK

MERN stands for MongoDB, Express, React, Node, after the four key technologies that make up the stack.

MongoDB — document database

Express(.js) — Node.js web framework

React(.js) — a client-side JavaScript framework

Node(.js) — the premier JavaScript web server