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Technology answer

PostHog

121,012

companies run it, 0.22% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 288,531 live hosts run it, of 191,809,695 hosts in the index, 0.15%. 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

121,009 at Sept 26; 89,624 twelve months earlier, +31,385, +35.0% 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
2023-0467661
2023-051,212110
2023-061,748159
2023-072,283207
2023-082,819256
2023-093,355305
2023-103,891354
2023-114,426402
2023-124,962451
2024-015,498500
2024-026,034548
2024-037,149650
2024-048,221747
2024-058,616783
2024-069,158832
2024-079,700882
2024-0810,283935
2024-0911,2981,027
2024-1015,2331,384
2024-1119,9981,818
2024-1224,5122,228
2025-0131,6912,880
2025-0238,1383,466
2025-0344,5854,052
2025-0451,2144,655
2025-0557,4085,218
2025-0666,2386,020
2025-0774,5516,776
2025-0883,1487,557
2025-0989,6248,146
2025-1095,6528,694
2025-1198,7608,976
2025-12101,0389,183
2026-01103,7159,426
2026-02108,8209,890
2026-03116,11910,554
2026-04118,23110,746
2026-05119,82610,891
2026-06122,36411,121
2026-07121,65811,057
2026-08121,60411,052
2026-09121,00910,998

Both denominators, and a third

Shares of the same 121,012each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.22%
companies running anything in Web Analytics
17,397,538
0.70%
companies running anything in Product analytics platforms
1,218,557
9.9%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, PostHog is rank 2 of 19 technologies in Product analytics platforms.

Open as a segment

121,012 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-posthog

Open the segment

Catalogue record

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

Open-source product analytics and session replay with a hosted and self-managed option.

PostHog tracks user behavior, funnels, feature flags, and session replay for web and product analytics. It is developed by PostHog and is available as open-source software or a hosted cloud service used by product and growth teams.

Kindproduct
VendorPostHog, posthog.com
PathData, Analytics and AI > Web Analytics > Product analytics platforms
Slugposthog
Deploymenthybrid
Pricingfreemium, usage based, subscription
Open sourceyes
First discovered2023-10-05
Last discovered2026-09-10
Taxonomy releasetax-2026.10