Start free

Home / Technologies / core-js vs Underscore.js

core-js vs Underscore.js: who uses which

core-js is on more sites: 2,697,064 against 1,226,291 for Underscore.js, about 2.2 times as many. Here's how they compare across the websites we've indexed, and where each one does best.

Where each one is used

Domaincore-jsUnderscore.js
.com on .com1,737,564529,209
.org on .org168,33355,195
.uk in the UK119,62234,026
.de in Germany66,75173,489
.net on .net65,39222,013
.fr in France37,47236,310
.au in Australia50,70719,826
.ca in Canada45,70914,405

121 sites run both at once.

Questions

Which is more popular, core-js or Underscore.js?

core-js is on more sites: 2,697,064 against 1,226,291 for Underscore.js, about 2.2 times as many, across the sites StackGrep has indexed.

Do sites use core-js and Underscore.js together?

121 sites load both. That's often a switch in progress, or two teams picking different tools.

Want the whole list?

Sign up to download every site using core-js or Underscore.js as a spreadsheet and see new ones as they appear. 200 free credits to start. No card needed.

Start free