About Underscore.js
Underscore.js is a JavaScript library which provides utility functions for common programming tasks. It is comparable to features provided by Prototype.js and the Ruby language, but opts for a functional programming design instead of extending object prototypes.
How many people use Underscore.js
GitHub · npm
#22 of 198 JavaScript libraries we have counts for (of 232) · bars are GitHub stars across these neighbours; the category leader is Axios at 109k · as of September 7, 2026
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Underscore.js#22 of 198 JavaScript libraries
AOS#21 of 198 JavaScript libraries
The two numbers disagree - one leads on stars, the other on installs. Stars measure attention, downloads measure use.
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We measure the detected version against Underscore.js's release history and grade the surrounding stack with a Lighthouse-grade quality audit. Weak or outdated links weigh more - one risky dependency can pull the whole score down.
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