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Re:Show HN: Mini social network that I made as my first MERN... by dfee on Saturday March 07, 2020 @04:54PM (#22514414)
MERN => Mongo, Express, React, NodeJS. Which is an evolution (as far as I can tell on) MEAN => Mongo, Express, Angular, NodeJS.

But really, NodeJS is unnecessary in the acronym, but is used to make a backronym. Really - how do you run Express without NodeJS? Maybe it’s so the backronym wasn’t “MAN”.

Re:Show HN: Mini social network that I made as my first MERN... by yepthatsreality on Saturday March 07, 2020 @07:53PM (#22515459)
Also interesting in comparison to older forms of this style of stack description:

* LAMP - Linux Apache MySQL PHP/Python/Perl

* LEPP - Linux Nginx PostgreSQL PHP/Python/Perl

MEAN and MERN do not specify the OS and swap more open ended possibilities for specific frameworks. I guess LEMJ doesn't roll off the tongue very well.

And while this was submitted with MERN in the title, the README omits Express but mentions Socket.io.