Websites using Underscore.js 1.x

Q: How does VersionDB detect Underscore.js 1.x?

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.

Q: How current is this data?

The figures on this page come from our September 2026 crawl. VersionDB runs a fresh crawl every month, and the database spans multiple monthly crawls.

Q: Can I download a list of Underscore.js 1.x websites?

Yes. The Lead List Exporter lets you filter the 1,630,629 Underscore.js 1.x sites by country, traffic and contact details, see the row count for free, and pay once for the rows you export. To try it first, the Free Lead List Exporter exports up to 10 matching domains at no cost, from a subset of our crawl.

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.

Lead List Exporter

1.6M live Underscore.js 1.x sites, ready to export.

That's how many Underscore.js 1.x websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

Open the Lead List Exporter

Just need a few domains? Export up to 10 free from a subset of our crawl.

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Underscore.js 1.x companies in the United States

Every Underscore.js 1.x website we detected in the United States.

Companies with personnel emails

Only sites where a personal, company-hosted email was found.

Decision makers on LinkedIn

Sites with at least one personnel LinkedIn profile.

Top 100,000 Underscore.js 1.x sites by traffic

Start with the highest-traffic end of the dataset.

Sites on a .com domain

Limit results to Underscore.js 1.x websites on .com domains.

Companies with phone numbers

Only sites where an organisation phone number was found.

Create your own

Versions

Which Underscore.js 1.x versions are most used?

We could read a version number on over 99% of Underscore.js 1.x sites. Of those, the most common are Underscore.js 1.13.8, on 871,872 sites, Underscore.js 1.13.7, on 448,537 sites and Underscore.js 1.13.4, on 173,638 sites.

54% on v1.13.8

Versions detected: 34
Sites with a version: 1,629,339

Share of sites by version

v1.13.8 54% 871,872 v1.13.7 28% 448,537 v1.13.4 11% 173,638 v1.8.3 5% 83,751 v1.13.1 2% 29,837 v1.13.3 1% 18,009 v1.6.0 <1% 2,822 v1.0.0 <1% 292 v1 (exact) <1% 262 v1.4.4 <1% 112 v1.9.0 <1% 69 v1.4.0 <1% 46 v1.9.1 <1% 25 v1.0.2 <1% 12 v1.13.6 <1% 12 v1.0.1 <1% 10 v1.8.2 <1% 7 v1.7.0 <1% 5 v1.0.3 <1% 3 v1.2.0 <1% 3 v1.11.0 <1% 2 v1.5.2 <1% 1 v1.5.1 <1% 1 v1.4.1 <1% 1 v1.2.3 <1% 1 v1.10.2 <1% 1 v1.1.6 <1% 1 v1.12.1 <1% 1 v1.1.0 <1% 1 v1.9.2 <1% 1 v1.13.2 <1% 1 v1.1.4 <1% 1 v1.2.2 <1% 1 v1.3.0 <1% 1

Live Websites

Websites Using Underscore.js 1.x

A sample of live Underscore.js 1.x sites from our latest crawl, with the other technologies each one runs.

Open in the Lead List Exporter

Domain	Also runs	Crawl Date
madish.in	jQuery PHP MySQL WordPress Nginx	September 28, 2026
madamedessert.de	jQuery PHP MySQL WordPress Nginx	September 28, 2026
lynnfitho.com	jQuery PHP MySQL HTTP/3 WordPress	September 28, 2026
luyacoffee.com	jQuery PHP MySQL WordPress Nginx	September 28, 2026
luxus.com.co	jQuery PHP MySQL HTTP/3 WordPress	September 28, 2026
luxurywatches.se	jQuery PHP MySQL WordPress Nginx	September 28, 2026
luxaraa.ir	jQuery PHP MySQL WordPress Nginx	September 27, 2026
lunedi.pl	jQuery PHP MySQL WordPress Nginx	September 27, 2026
luminaaudio.co.za	jQuery PHP MySQL WordPress HSTS	September 27, 2026
lumierejew.com	jQuery PHP MySQL HTTP/3 WordPress	September 27, 2026

How many websites use Underscore.js 1.x?

We found Underscore.js 1.x on 1,630,629 websites in our September 2026 crawl, across 225 countries.

Which countries use Underscore.js 1.x the most?

By number of websites, the top countries are United States (16%, 267,631 sites), Germany (10%, 157,400 sites), France (6%, 105,565 sites), United Kingdom (4%, 70,802 sites) and Italy (4%, 63,804 sites). Together they account for 41% of the 1,630,629 Underscore.js 1.x sites we track. 45% of the sites are in English, and .com is the most used domain ending, on 44% of them.

Where are Underscore.js 1.x websites hosted?

The networks carrying the most Underscore.js 1.x sites are Hostinger International Limited (214,887 sites), Cloudflare, Inc. (130,183 sites) and OVH SAS (78,371 sites).

What technologies are used with Underscore.js 1.x?

Across the 1,630,629 Underscore.js 1.x sites we track, the technologies most often found alongside it are PHP (over 99%, 1,626,699 sites), WordPress (over 99%, 1,626,283 sites), MySQL (over 99%, 1,626,082 sites), jQuery (over 99%, 1,623,776 sites) and jQuery Migrate (93%, 1,515,346 sites).

Deep Dive

Breakdown of Underscore.js 1.x websites

What else they run, plus their language, hosting network, domain extension and country.

Technology	Sites
PHP	1,626,699
WordPress	1,626,283
MySQL	1,626,082
jQuery	1,623,776
jQuery Migrate	1,515,346
Elementor	811,018
WooCommerce	779,003
HTTP/3	674,045
Yoast SEO	632,044
Contact Form 7	593,051
Google Analytics	575,899
imagesLoaded	524,663
Apache HTTP Server	501,921
LiteSpeed	434,266
Bootstrap	416,220
Swiper	407,037
Nginx	352,102
WordPress Block Editor	347,553
Magnific Popup	347,145
Site Kit	319,717
reCAPTCHA	308,878
Slider Revolution	297,490
Font Awesome	265,081
Cloudflare	263,073
Slick	260,748

Language	Sites
English	728,858
German	131,206
French	113,101
Spanish	108,818
Italian	59,918
Dutch	48,902
Portuguese	34,009
Polish	32,923
Latin	32,371
Russian	31,477
Japanese	22,229
Persian	20,597
Turkish	17,420
Vietnamese	16,836
Danish	14,154
Swedish	13,800
Czech	11,974
Romanian	11,837
Chinese	11,125
Hungarian	10,254
Greek	9,794
Tagalog	9,193
Indonesian	8,391
Hebrew	7,848
Finnish	7,302

ASN	Sites
Hostinger International Limited	214,887
Cloudflare, Inc.	130,183
OVH SAS	78,371
IONOS SE	76,867
Cloudflare London, LLC	64,885
Hetzner Online GmbH	60,333
GoDaddy.com, LLC	42,966
Aruba S.p.A.	30,744
Amazon.com, Inc.	25,761
Namecheap, Inc.	25,744
Strato GmbH	24,246
DigitalOcean, LLC	24,010
Neue Medien Muennich GmbH	22,216
WHG Hosting Services Ltd	22,121
Google LLC	20,593
Combell NV	17,933
O2switch SAS	17,353
One.com A/S	16,633
New Dream Network, LLC	16,263
Host Europe GmbH	15,139
InMotion Hosting, Inc.	12,372
The Constant Company, LLC	10,846
Infomaniak Network SA	10,589
Xserver Inc.	10,139
Sucuri	10,016

TLD	Sites
com	722,727
de	95,810
org	74,159
fr	48,019
uk	46,815
it	43,242
nl	38,135
pl	29,756
net	29,167
au	25,933
br	22,139
ru	21,819
es	19,909
ca	18,432
in	17,838
ch	16,506
za	14,073
eu	14,064
dk	12,684
gr	12,528
be	12,526
se	12,505
ro	11,552
cz	11,510
at	10,237

Country	Sites
🇺🇸 United States	267,631
🇩🇪 Germany	157,400
Unknown	156,955
🇫🇷 France	105,565
🇬🇧 United Kingdom	70,802
🇮🇹 Italy	63,804
🇨🇾 Cyprus	54,737
🇳🇱 Netherlands	51,666
🇪🇸 Spain	47,624
🇮🇳 India	47,623
🇵🇱 Poland	35,590
🇨🇦 Canada	33,652
🇦🇺 Australia	30,518
🇷🇺 Russia	27,904
🇧🇷 Brazil	26,488
🇯🇵 Japan	24,233
🇨🇭 Switzerland	21,792
🇮🇷 Iran	18,775
🇩🇰 Denmark	17,983
🇿🇦 South Africa	17,653
🇹🇷 Turkey	17,275
🇸🇬 Singapore	16,635
🇻🇳 Vietnam	16,122
🇸🇪 Sweden	14,854
🇧🇪 Belgium	14,735

FAQ

Answers drawn from our latest crawl of Underscore.js 1.x websites. Anything else, email us and we will look it up.

How does VersionDB detect Underscore.js 1.x?

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.

How current is this data?

Can I download a list of Underscore.js 1.x websites?