JavaScript libraries · comparison

Slick vs Underscore.js

Slick is used on 575,616 sites, 96% more than Underscore.js (293,233 sites).

In JavaScript libraries, Slick ranks #3 and Underscore.js #11 by number of sites.

From Jul 2026 to Oct 2026, Slick grew 0.2% and Underscore.js grew 0.2%.

48,874 sites run both: 8.5% of Slick sites and 17% of Underscore.js sites.

Sl

Slick

kenwheeler.github.io/slick
Sites
575,616
Share of tracked sites
3.73%
Rank in JavaScript libraries
#3
Change since Jul 2026
▲ +0.21%
Un

Underscore.js

underscorejs.org
Sites
293,233
Share of tracked sites
1.91%
Rank in JavaScript libraries
#11
Change since Jul 2026
▲ +0.23%

Sites using both

48,874
sites run Slick and Underscore.js
of Slick sites8.5%
of Underscore.js sites16.7%

Top sites using Slick

  1. akaihane.or.jp#110,800
  2. enosui.com#152,818
  3. royal-hawaiian.com#201,950
  4. hatarakigai.info#260,008
  5. tsukijihongwanji.jp#281,330
All Slick sites →

Often used with Slick

Top sites using Underscore.js

  1. ai-gakkai.or.jp#117,764
All Underscore.js sites →

Often used with Underscore.js

More JavaScript libraries comparisons

Site counts and ranks come from our crawl of the web; the change compares the monthly adoption snapshots both technologies have.