Technology answer

RxJS

32,308

companies run it, 0.06% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 68,429 live hosts run it, of 191,809,695 hosts in the index, 0.04%. 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

32,308 at Sept 26; 31,595 twelve months earlier, +713, +2.3% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020

The 69 numbers in this chart

Month	Companies	Observed on the panel
2021-01	24,298	2,225
2021-02	24,299	2,225
2021-03	24,300	2,225
2021-04	24,300	2,225
2021-05	24,301	2,226
2021-06	24,301	2,226
2021-07	24,302	2,226
2021-08	24,305	2,226
2021-09	24,305	2,226
2021-10	24,304	2,226
2021-11	24,303	2,226
2021-12	24,302	2,226
2022-01	24,301	2,226
2022-02	24,300	2,225
2022-03	24,300	2,225
2022-04	24,300	2,225
2022-05	24,300	2,225
2022-06	24,300	2,225
2022-07	24,300	2,225
2022-08	24,300	2,225
2022-09	24,300	2,225
2022-10	24,302	2,226
2022-11	24,303	2,226
2022-12	24,305	2,226
2023-01	24,306	2,226
2023-02	24,307	2,226
2023-03	24,308	2,226
2023-04	24,692	2,261
2023-05	24,815	2,273
2023-06	24,938	2,284
2023-07	25,060	2,295
2023-08	25,183	2,306
2023-09	25,305	2,318
2023-10	25,426	2,329
2023-11	25,549	2,340
2023-12	25,672	2,351
2024-01	25,794	2,362
2024-02	25,917	2,374
2024-03	26,082	2,389
2024-04	26,223	2,402
2024-05	25,980	2,379
2024-06	26,001	2,381
2024-07	26,022	2,383
2024-08	26,045	2,385
2024-09	26,278	2,407
2024-10	26,673	2,443
2024-11	27,108	2,483
2024-12	27,501	2,519
2025-01	28,017	2,566
2025-02	28,457	2,606
2025-03	28,897	2,646
2025-04	29,383	2,691
2025-05	29,828	2,732
2025-06	30,374	2,782
2025-07	30,870	2,827
2025-08	31,384	2,874
2025-09	31,595	2,894
2025-10	31,595	2,894
2025-11	31,433	2,879
2025-12	31,230	2,860
2026-01	31,082	2,847
2026-02	31,638	2,897
2026-03	32,399	2,967
2026-04	32,464	2,973
2026-05	32,436	2,971
2026-06	32,488	2,975
2026-07	32,403	2,968
2026-08	32,376	2,965
2026-09	32,308	2,959

Both denominators, and a third

Shares of the same 32,308each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

0.06%

companies running anything in JavaScript Libraries

40,118,208

0.08%

companies running anything in General JavaScript utilities

18,294,596

0.18%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, RxJS is rank 39 of 87 technologies in General JavaScript utilities.

Open as a segment

32,308 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-rxjs

Open the segment

Catalogue record

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

RxJS is an open-source JavaScript library for reactive programming with Observables.

RxJS implements the ReactiveX pattern in JavaScript, providing composable asynchronous and event-based programs using Observables. It is used by frontend and Node.js developers to manage streams and async workflows.

Kindlibrary

VendorReactiveX, reactivex.io

PathWeb Engineering > JavaScript Libraries > General JavaScript utilities

Slugrxjs

Deploymentself-hosted

Pricingfree

Open sourceyes

First discovered2019-10-04

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.