Technology answer

Chai

66

companies run it, <0.01% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 175 live hosts run it, of 191,809,695 hosts in the index, <0.01%. A host is a website, not a company.

Companies by month

No published series

66 companies is under the publication floor of 1,000, and the fixed panel anchored at 31 Dec 2020 carries 22 of them. A monthly line drawn off that many observations would be noise at the same weight as a line off millions, so this page states the count and its date and publishes no series.

First discovered 8 Mar 2025, last discovered 10 Sept 2026.

Both denominators, and a third

Shares of the same 66each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

<0.01%

companies running anything in JavaScript Libraries

40,118,208

<0.01%

companies running anything in General JavaScript utilities

18,294,596

<0.01%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, Chai is rank 83 of 87 technologies in General JavaScript utilities.

Open as a segment

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

/companies/tech-chai

Open the segment

Catalogue record

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

Open-source assertion library for JavaScript and Node.js testing.

Chai provides BDD/TDD assertion styles for JavaScript tests in Node.js and browsers. It is maintained by the Chai.js community and used by developers with test runners like Mocha.

Kindlibrary

VendorChai.js community, chaijs.com

PathWeb Engineering > JavaScript Libraries > General JavaScript utilities

Slugchai

Deploymentself-hosted

Pricingfree

Open sourceyes

First discovered2025-03-08

Last discovered2026-09-10

Taxonomy releasetax-2026.10

One click under this answer

Subcategory answerGeneral JavaScript utilitiesCompanies running anything in General JavaScript utilities, 18,294,596 of 54,527,857 in the index, and the technologies ranked in it.Category answerJavaScript LibrariesThe category above this one, with its subcategories and the companies in each.CatalogueAll 8,177 technologiesRanked by the companies running them, with the publication gate named and the long tail drawn.