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ResponsiveVoice

13,866

companies run it, 0.03% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 24,804 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

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

13,866 at Sept 26; 13,878 twelve months earlier, -12, -0.1% 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
2021-08withheld0
2021-09withheld0
2021-10withheld0
2021-11withheld0
2021-12withheld0
2022-01withheld0
2022-02withheld0
2022-03withheld0
2022-04withheld0
2022-05withheld0
2022-06withheld0
2022-07withheld0
2022-08withheld0
2022-09withheld0
2022-10withheld0
2022-11withheld0
2022-12withheld0
2023-01withheld0
2023-02withheld0
2023-03withheld0
2023-04655108
2023-051,064176
2023-061,473243
2023-071,882311
2023-082,290378
2023-092,699446
2023-103,108513
2023-113,517581
2023-123,926649
2024-014,335716
2024-024,744784
2024-035,251867
2024-045,743949
2024-055,597925
2024-065,681939
2024-075,765952
2024-085,853967
2024-096,2301,029
2024-106,7041,108
2024-117,3211,209
2024-127,9211,309
2025-018,6671,432
2025-029,3611,546
2025-0310,0551,661
2025-0410,7011,768
2025-0511,3241,871
2025-0612,0141,985
2025-0712,6812,095
2025-0813,3682,208
2025-0913,8782,293
2025-1014,0982,329
2025-1114,2212,349
2025-1214,2002,346
2026-0114,2012,346
2026-0214,2352,352
2026-0314,3662,373
2026-0414,3672,373
2026-0514,3092,364
2026-0614,2882,360
2026-0714,1682,341
2026-0814,0512,321
2026-0913,8662,291

Both denominators, and a third

Shares of the same 13,866each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.03%
companies running anything in AI Models and APIs
554,939
2.5%
companies running anything in Text-to-speech APIs
26,787
51.8%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, ResponsiveVoice is rank 1 of 4 technologies in Text-to-speech APIs.

Open as a segment

13,866 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-responsivevoice

Open the segment

Catalogue record

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

Hosted text-to-speech API and JavaScript for adding speech to websites and apps.

ResponsiveVoice provides a cloud text‑to‑speech service accessible via JavaScript and API for web and mobile apps. It offers multiple voices and languages for reading page content and app text aloud.

Kindproduct
VendorResponsiveVoice, responsivevoice.org
PathData, Analytics and AI > AI Models and APIs > Text-to-speech APIs
Slugresponsivevoice
Deploymentsaas
Pricingfreemium, subscription
Open sourceno
First discovered2022-02-03
Last discovered2026-09-10
Taxonomy releasetax-2026.10