core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.
Get all 982,554 companies using core-js
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Companies
982,554
Top Country
US
Top Industry
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Adoption Insights
core-js is used by 982,554 companies in our database, representing approximately 33.17% of all tracked websites. The adoption is strongest in US.
Top Countries Using core-js
Companies Using core-js
| Company | Domain | Country | Industry | Employees |
|---|---|---|---|---|
 CoreWeave | coreweave.com | US | AI Infrastructure | 1001-5000 |
 OpenAI | openai.com | US | Agentic AI | 1001-5000 |
 European Investment Bank | eib.org | LU | Banking | 1001-5000 |
 Polymarket | polymarket.com | US | Cryptocurrency | 11-50 |
 Spring Health | springhealth.com | US | Artificial Intelligence (AI) | 1001-5000 |
 NVIDIA | nvidia.com | US | AI Infrastructure | 10001+ |
 Bullish | bullish.com | US | Cryptocurrency | 251-500 |
 Mistral AI | mistral.ai | FR | Artificial Intelligence (AI) | 251-500 |
 Indigo | indigoag.com | US | Agriculture | 501-1000 |
 Baseten | baseten.co | US | AI Infrastructure | 101-250 |
Top Alternatives to core-js
Other JavaScript libraries technologies sorted by adoption
How We Detect core-js
The Web Radar detects core-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 core-js?+
core-js is a modular standard library for JavaScript, with polyfills for cutting-edge ECMAScript features.
How many companies use core-js?+
982,554 companies in our database use core-js, representing approximately 33.17% of all tracked websites.
What countries use core-js the most?+
The top countries using core-js are US, GB, DE.
Is core-js popular?+
core-js is used by 982,554 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: June 2026