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.
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Companies
101,704
Top Country
US
Top Industry
Consulting
Adoption Insights
Underscore.js is used by 101,704 companies in our database, representing approximately 3.43% of all tracked websites. The most common industry using Underscore.js is Consulting, and adoption is strongest in US.
Top Countries Using Underscore.js
Top Industries Using Underscore.js
Companies Using Underscore.js
| Company | Domain | Country | Industry | Employees |
|---|---|---|---|---|
 Highspot | highspot.com | US | Artificial Intelligence (AI) | 1001-5000 |
 Redwire | redwirespace.com | US | Manufacturing | 1001-5000 |
 Orca Bio | orcabio.com | US | Health Care | 251-500 |
 DexMat | dexmat.com | US | Advanced Materials | 11-50 |
 BILT | biltapp.com | US | 3D Technology | 51-100 |
 General Fusion | generalfusion.com | CA | Energy | 101-250 |
 Invivyd | invivyd.com | US | Biotechnology | 101-250 |
 Exiger | exiger.com | US | Artificial Intelligence (AI) | 501-1000 |
 Artera | artera.io | US | Artificial Intelligence (AI) | 251-500 |
 Waystar | waystar.com | US | Finance | 1001-5000 |
Top Alternatives to Underscore.js
Other JavaScript libraries technologies sorted by adoption
How We Detect Underscore.js
The Web Radar detects Underscore.js by analyzing HTTP headers, JavaScript variables, HTML source code, cookies, and DNS records across 3M+ websites. Our detection engine uses over 10,000+ pattern rules to ensure accurate identification. Browse all technologies →
Frequently Asked Questions
What is 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 companies use Underscore.js?+
101,704 companies in our database use Underscore.js, representing approximately 3.43% of all tracked websites.
What industries use Underscore.js the most?+
The top industries using Underscore.js are Consulting, E-Commerce, Health Care.
What countries use Underscore.js the most?+
The top countries using Underscore.js are US, GB, DE.
Is Underscore.js popular?+
Underscore.js is used by 101,704 companies, making it one of the most widely adopted JavaScript libraries technology based on adoption across our tracked websites.
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Browse DatasetsData last updated: July 2026