9,046,757 websites in the live index use core-js as of October 2026. Download the full list of core-js websites with website, company, country and language.
Modular standard library for JavaScript.
As of October 21, 2026, TechLeads detects core-js on 9,046,757 websites: 77.3% of Framework detections, the 1st most-used of 75 Framework technologies we track.
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TechLeads. "Companies Using core-js." Data as of October 21, 2026. https://techleads.fyi/technology/core-jsHTML link
<a href="https://techleads.fyi/technology/core-js">Companies using core-js (TechLeads data)</a>Sample results for core-js
| Rank | Icon | Website | Title | Description | Company | Country | Language |
|---|---|---|---|---|---|---|---|
| #69 | notregaleriedephotos' collections on Flickr | The safest and most inclusive global community of photography enthusiasts. The best place for inspiration, connection, and sharing! | - | - | - | ||
| #97 | Pinterest Acquires Image Recognition And Visual Search Startup VisualGraph | TechCrunch | Pinterest has just acquired two-man startup VisualGraph, which creates machine vision, image recognition, and visual search technologies. The company's founder Kevin Jing and his partner David Liu are joining the Pinterest engineering team today. | TechCrunch | - | - | ||
| #98 | URL Shortener, Branded Short Links & Analytics | TinyURL | - | - | - | - | ||
| #100 | Issuu Reader | Reader for Issuu | - | - | - | ||
| #148 | Harvard Business Review - Ideas and Advice for Leaders | Find new ideas and classic advice on strategy, innovation and leadership, for global leaders from the world's best business and management experts. | Hbr | - | en | ||
| #175 | TIME's 2020 Kid of the Year: Meet Gitanjali Rao | TIME | Meet TIME's first-ever Kid of the Year: a 15-year-old scientist and inventor who uses technology to tackle issues ranging from contaminated drinking water to cyberbullying. | Time | - | - | ||
| #176 | Temporary Server Issue | Mailchimp | Steigere dein Wachstum mit den zeitsparenden Marketing-Tools von Mailchimp. Starte deine 14-tägige kostenlose Testphase. | - | - | - | ||
| #197 | OpenAI acquires Rockset | OpenAI | OpenAI Acquires Rockset | - | - | - | ||
| #201 | Moz logo | Improve your local SEO strategy with an all-in-one solution to manage listings, audit performance, and boost traffic. Monitor your listing health, increase visibility, and drive more traffic with Moz’s local SEO tool. | - | - | - | ||
| #206 | Crowdfunding For Good From JustGiving | Iʼm raising money to undefined. Support this JustGiving Crowdfunding Page. | - | - | - | ||
| #220 | Best Hair Transplant Clinics in Turkey: Top 10 | Alles wat je wilt weten op het gebied van tech en entertainment vind je op Mashable Benelux. | Mashable Benelux | - | - | ||
| #418 | Blog – Open Source Initiative | - | Opensource | US | en-US | ||
| #460 | ツバメ堂 / zbame lit.link | 型染版画と半襟や帯、ハンカチなど | - | - | - | ||
| #477 | Быстрый переезд на xmail.ru — почту для российских сервисов | Сохраним ваше имя с Gmail и перенесём письма за пару кликов. Новая почта подойдёт для регистрации на любых российских сайтах | - | - | - | ||
| #490 | 不動産のセカンドオピニオン 「ビル・ドクター」のサービス内容について | 福岡のビル・建物の点検・修繕 代行サービス「ビルドクター」若菜伸一のブログ | 上田桃子さんのブログです。最近の記事は「【事務局より】Web「Sports navi 」インタビュー記事掲載情報」です。 | Ameba | - | - | ||
| #518 | Politik 💬 Propagandist.in (@politik@mastodon.social) - Mastodon | - | - | - | - | ||
| #568 | Grand Canyon National Park (U.S. National Park Service) | Entirely within the state of Arizona, the park encompasses 278 miles (447 km) of the Colorado River and adjacent uplands. Located on the ancestral homelands of 11 present day Tribal Communities, Grand Canyon is one of the most spectacular examples of erosion anywhere in the world—a mile deep canyon | - | - | - | ||
| #582 | Global Wellness Institute | The Global Wellness Institute is a nonprofit organization with a mission to empower wellness worldwide by educating public and private sectors about preventative health and wellness. | Global Wellness Institute | US | en-US | ||
| #674 | Boing Boing Video Archives - Boing Boing | - | Happy Mutants, LLC. | - | - | ||
| #719 | Help Waste Limited Clean Florida! | Waste Limited (Powered by Donorbox) | Waste Limited is engaging in frequent volunteer cleanups in Central Florida. Our teams are removing litter from streets, sidewalks and parks. We're using both high and low tech approaches to maximize efficiency. From trash cans strapped to our ... | - | - | - | ||
| #720 | National Academy of Medicine | Advancing Health Care | NAM | NAM advances science, informs policy, and catalyzes action to achieve human health, equity, and well-being. | Social Driver | US | en | ||
| #754 | leadnodes - Portfolio | ThemeForest | The #1 marketplace for premium website templates, including themes for WordPress, Magento, Drupal, Joomla, and more. Create a website, fast. | - | - | - | ||
| #760 | Home | EJI works to end mass incarceration, excessive punishment, and racial inequality. | - | - | - | ||
| #766 | Il Blog di Beppe Grillo - Il Blog di Beppe Grillo | 25 views beppegrillo.it Dicembre 8, 2025 Il Giappone e la sfida alle terre rare cinesi DAL WEB – ARTICOLO PUBBLICATO SU THE ECONOMIST Quando il Giappone e la Cina si scontrarono per un gruppo di isole contese nel 2010, la Cina impiegò un’arma innovativa. Impose un divieto non ufficiale all’esportazi | Il Blog di Beppe Grillo | - | - | ||
| #837 | Flickr | The best place to be a photographer online. | - | - | - | - |
The most-used Framework technologies in the TechLeads index, by number of websites. core-js accounts for 77.3% of Framework detections (9,046,757 websites).
| Technology | Websites | Share of Framework |
|---|---|---|
| UIKit | 545,010 | 4.7% |
| Babel | 359,529 | 3.1% |
| Handlebars | 255,466 | 2.2% |
| Mustache | 247,273 | 2.1% |
| Facebook Domain Verification | 207,808 | 1.8% |
| Shockwave Flash Embed | 181,171 | 1.5% |
| GlobalSign Domain Verification | 168,312 | 1.4% |
| Gatsby JS | 118,137 | 1.0% |
TechLeads scans public websites and identifies core-js from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 21, 2026. Counts only include websites we have scanned, so they can differ from other providers.
Complete core-js website dataset in CSV. One-time purchase.
Secure checkout · 7-day download access| Material Design Lite |
| 92,209 |
| 0.79% |
| ASP.NET MVC | 76,903 | 0.66% |
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Modular standard library for JavaScript.
Our comprehensive database contains 9,046,757 websites using core-js, making it the most complete core-js sites list available. This core-js customer websites directory helps businesses detect websites using core-js and identify potential leads.
Our core-js technology detection system scans millions of websites to identify those powered by core-js. This list of sites with core-js includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with core-js or exploring core-js adoption trends, our database provides comprehensive insights.
Each entry in our core-js sites list includes valuable data points: domain name, global ranking, company information, contact details, social media links. This makes it easy to detect websites using core-js and reach out to potential customers or partners.
Get instant access to the full list of sites with core-js in CSV format. Our dataset includes all 9,046,757 core-js customer websites with complete contact information, perfect for lead generation, market research, and competitive analysis. The data is regularly updated to ensure accuracy and includes the latest core-js powered websites.