Brandwave

Fathom Analytics vs PostHog:Which is more popular?

In September 2026, PostHog had more branded searches than Fathom Analytics among web analytics tools worldwide. PostHog had about 247,000 branded searches, while Fathom Analytics had 2,400. PostHog made up 7% of all web analytics tool searches we track, and Fathom Analytics accounted for 0.07%. When we asked ChatGPT and Google AI Overviews about web analytics tools, PostHog appeared in three of the five answers and Fathom Analytics in one. PostHog was mentioned before Fathom Analytics in three out of four answers that named either.

Among web analytics tools worldwide in September 2026

Who do people search for more?

PostHog, about 103 searches for every 1 for Fathom Analytics

PostHog 247K searchesFathom Analytics 2.4K searches

Who does AI mention more?

PostHog, mentioned in 3 of 5 answers, Fathom Analytics in 1

PostHog in 3 of 5Fathom Analytics in 1 of 5

Who does AI recommend more?

PostHog, named ahead of Fathom Analytics in 3 of 4 answers

PostHog first in 3Fathom Analytics first in 1

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Top web analytics tools in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, PostHog was mentioned in three out of five: in one of the three ChatGPT answers and in both Google AI Overviews. Fathom Analytics was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. PostHog was listed before Fathom Analytics in three out of four answers that named either.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Google Analytics1st
  2. Microsoft Clarity2nd
  3. Plausible3rd
  4. Matomo4th
  5. PostHog5th
  6. Fathom Analytics6th
  7. Adobe Analytics7th
  8. Mixpanel8th
  9. Hotjar–
  10. Mode Analytics–
  11. +1 more

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Google Analytics5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Microsoft Clarity5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Plausible5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Matomo4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • PostHog3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Adobe Analytics2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Mixpanel1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Fathom Analytics1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Hotjar0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Mode Analytics0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about web analytics tools

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Is Fathom Analytics or PostHog more popular in search?

This chart shows how often people search Google for Fathom Analytics and PostHog by name. Each line represents a brand's share of searches for all 11 web analytics tools we track, month by month, from English-language searches worldwide.

Fathom Analytics and PostHog among web analytics tools worldwide, by month

Share of searches by month for PostHog, Fathom Analytics. The figures are in the table below the chart.

View monthly share of searches table
MonthGoogle AnalyticsPostHogMicrosoft ClarityHotjarMixpanelMatomoAdobe AnalyticsPlausibleMode AnalyticsAmplitudeFathom Analytics
Oct 202578.9%4.5%4.5%5.5%3%1.9%0.74%0.33%0.24%0.24%0.18%
Nov 202577.8%4.5%4.4%4.4%5.4%1.8%0.73%0.33%0.23%0.19%0.18%
Dec 202580.2%4.6%4.6%3.8%3.8%1.5%0.62%0.28%0.2%0.2%0.15%
Jan 202678.2%5.5%5.4%4.4%3%1.8%0.73%0.33%0.23%0.2%0.15%
Feb 202682.4%3.9%5.7%3.1%1.8%1.4%0.63%0.35%0.31%0.27%0.1%
Mar 202682.9%5.8%4.7%2.1%1.8%1.1%0.63%0.35%0.25%0.22%0.1%
Apr 202684.7%4%4.8%2.2%1.8%1.1%0.53%0.36%0.26%0.19%0.13%
May 202686.2%4.1%4.9%1.5%1.2%0.8%0.44%0.37%0.17%0.16%0.07%
Jun 202680.1%6.8%5.6%2.5%2.1%1.5%0.5%0.41%0.2%0.18%0.15%
Jul 202681.8%6.9%5.6%1.7%1.7%1.1%0.41%0.34%0.16%0.18%0.12%
Aug 202682.2%6.9%5.6%1.7%1.4%1%0.41%0.28%0.13%0.14%0.12%
Sep 202681.7%7%4.6%3.1%1.7%1.1%0.34%0.23%0.11%0.1%0.07%

How has the Fathom Analytics and PostHog comparison changed over the last 12 months?

3 findings

How did search popularity change for web analytics tools worldwide in September 2026?

2 changes

  1. Estimated monthly branded searches for PostHog worldwide rose 123% over 12 measured months, from 111K to 247K in September 2026.

  2. Estimated monthly branded searches for Fathom Analytics worldwide fell 45.5% over 12 measured months, from 4.4K to 2.4K in September 2026.

How are branded searches counted?

3 search terms

Brandwave collects information about searches that people make online using Fathom Analytics’ and PostHog’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Fathom Analytics

1 branded search term

  • fathom analytics

PostHog

2 branded search terms

  • posthog
  • posthog analytics

How the Brand Demand Index is measured

Other head-to-heads among web analytics tools

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