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Technology answer

Closure Library

198,514

companies run it, 0.36% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 944,330 live hosts run it, of 191,809,695 hosts in the index, 0.49%. A host is a website, not a company.

Companies by month

Companies, monthly, on the fixed panel of sites crawled since 2020of 54,527,857 in the indexlanding 12 Sept 2026

198,514 at Sept 26; 119,839 twelve months earlier, +78,675, +65.7% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020

The 69 numbers in this chart
MonthCompaniesObserved on the panel
2021-0100
2021-0200
2021-0300
2021-0400
2021-0500
2021-0600
2021-0700
2021-0800
2021-0900
2021-1000
2021-1100
2021-1200
2022-0100
2022-0200
2022-0300
2022-0400
2022-0500
2022-0600
2022-0700
2022-0800
2022-0900
2022-1000
2022-1100
2022-1200
2023-0100
2023-0200
2023-0300
2023-049,883712
2023-0516,8161,212
2023-0623,7491,711
2023-0730,6822,211
2023-0837,6142,711
2023-0944,5473,210
2023-1051,4803,710
2023-1158,4134,210
2023-1265,3464,709
2024-0172,2785,209
2024-0279,2125,708
2024-0386,3766,225
2024-0493,4836,737
2024-0590,7086,537
2024-0690,8956,550
2024-0791,0776,564
2024-0891,2666,577
2024-0991,8596,620
2024-1092,7176,682
2024-1193,7686,757
2024-1294,7506,828
2025-0195,8986,911
2025-0296,9436,986
2025-0397,9877,061
2025-0498,8837,126
2025-0599,7657,190
2025-06100,7887,263
2025-07104,0827,501
2025-08112,6458,118
2025-09119,8398,636
2025-10126,6269,125
2025-11133,1489,595
2025-12139,47710,051
2026-01146,01010,522
2026-02155,13111,180
2026-03165,14311,901
2026-04170,26212,270
2026-05176,21512,699
2026-06183,45013,220
2026-07192,08913,843
2026-08199,17814,354
2026-09198,51414,306

Both denominators, and a third

Shares of the same 198,514each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.36%
companies running anything in JavaScript Libraries
40,118,208
0.49%
companies running anything in General JavaScript utilities
18,294,596
1.1%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, Closure Library is rank 20 of 87 technologies in General JavaScript utilities.

Open as a segment

198,514 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-closure-library

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

An open-source JavaScript utility library from Google.

Closure Library is a modular JavaScript library maintained by Google that provides utilities, DOM helpers, and UI components. Developers include it in web applications to build features without writing them from scratch.

Kindlibrary
VendorGoogle, google.com
Slugclosure-library
Deploymentself-hosted
Pricingfree
Open sourceyes
First discovered2023-10-05
Last discovered2026-09-10
Taxonomy releasetax-2026.10