Not really the same. Emacs focus a lot on compatibility and common modules (even if there may be some different takes on those common things). So you got big systems like helm, consul, ivy, company,… and the. everyone building on top.

Another thing is configuration (which also ties to the previous statement). You have to be able to split the idea of the program (what it aims to do) and your personal preferences. Emacs make that easy by having a framework for user preferences. That makes for an extendable program.

The closest, but not as user friendly is unix and suckless philosophy combined. Small programs, easy to understand, configure, and extend.