MEAN

MEAN refers to first letters of the four components of a free and open-source solution stack for building dynamic web sites. MEAN is a full-stack JavaScript platform designed for web applications. The components of the MEAN stack are as follows:

MongoDB, a NoSQL database;
Express.js, a web applications framework;
Angular.js, a JavaScript MVC framework for web apps;
Node.js, a software platform for scalable server-side and networking applications.

Logos
The initial logo concept was created by Austin Anderson for the original MEAN stack LinkedIn group, and is an assembly of each first letter of the MEAN acronym.
See also

LAMP (software bundle)
MAMP
WAMP

References
External links

meanjs.org
mean.io
How to get started on the MEAN stack
Austin MEAN Stack Development Meetup
MEAN
...