The analytics, advertising and consent tools companies put on their websites in October, and the ones they took off: six changes in the marketing stack, measured and scored.
6 findings · 6 charts · 35 companies named · 2 of 6 findings open · Free with an account · Published 24 October 2026
6.4%of websites run Microsoft Clarity, against 4.5% for Hotjar
+12.1%a month: the growth of PostHog on company websites
4.8websites added the Reddit pixel for each one that removed it
1.6websites removed Criteo for each one that added it
The tools that measure, target and ask for consent are where a marketing team's choices show first on its website. This edition reads six changes across the company websites in the Fokals index: the session recorder that passed its rival, the product analytics platform growing fastest, the ad channels gaining pixels, the retargeting tags coming off, the consent managers that lead country by country and the email platform spreading beyond shops.
Every figure is measured on the websites themselves, dated, and set against the weeks before; each finding names companies that made the change.
This edition at a glance
6 findings, by how common and how fast
Each finding is placed by how many companies do it and how fast that is growing. The bigger the point, the stronger the signal. How to read a report
Microsoft Clarity runs on 6.4% of websites against Hotjar's 4.5%, and in October the gap widened: Clarity grew 4.8% a month while Hotjar slipped.
Signal score6.4/10Clear signal
TrendRisingMore companies are doing it
How common6.4%of companies do it
How fast+4.8%a month · Breaking out
Strongest in
Fashion
Beauty
Consumer electronics
6.4%of websites run Microsoft Clarity, against 4.5% for Hotjar
Microsoft Clarity and Hotjar both record how visitors use a website: where they click, how far they scroll, where they give up. Clarity, which Microsoft offers free, runs on 6.4% of the websites read in the 30 days to 18 October; Hotjar runs on 4.5%.
The gap is widening. In the three weeks to 18 October, 3.0 websites added Clarity for each one that removed it, net growth of 4.8% a month, while Hotjar lost slightly more websites than it gained, with 0.9 additions for each removal.
The two are rarely swapped: one in thirty of the websites that removed Hotjar added Clarity in the same weeks. Clarity leads in shops, on 14.2% of fashion websites; Hotjar is strongest on finance and telecom websites, at 6.7%.
Websites running each session recorder, by industryShare of websites
Microsoft Clarity
Hotjar
Share of the websites in each industry read in the 30 days to 18 October 2026.
A website that has just added a session recorder is studying where its visitors give up: the moment for conversion testing, site search and checkout work.
For marketers
Recordings show what a report cannot: a campaign's landing page can be judged by where its visitors stop, not only by how many arrive.
RisingMarketing stack
Product Analytics Breaks Out
PostHog is growing 12.1% a month on company websites, the fastest of the analytics tools in this edition, with 6.3 additions for each removal.
Signal score7.0/10Clear signal
TrendRisingMore companies are doing it
How common0.4%of companies do it
How fast+12%a month · Breaking out
Strongest in
Software and SaaS
Finance and insurance
Gaming
+12.1%a month: the net growth of PostHog on company websites
PostHog is a product analytics platform: it records what users do inside a website or an app, and runs feature flags and experiments on top. It is on 0.4% of the websites read in the 30 days to 18 October and on 2.6% of software and SaaS websites.
In the three weeks to 18 October, 6.3 websites added it for each one that removed it, net growth of 12.1% a month. Contentsquare grew 10.5% a month and Optimizely 9.1%; Google Analytics 4, on 39.6% of websites, grew 0.8%.
The companies adding it build products as well as websites: software makers, apps and online services among them.
Websites that added each tool for each one that removed it, three weeks to 18 OctoberAdded for each removal
PostHog6.3
Contentsquare3.3
Microsoft Clarity3.0
Optimizely2.5
Google Analytics 41.8
Hotjar0.9
Above 1, more websites added it than removed it.
Show the numbers
Analytics and testing
Added for each removal
PostHog
6.3
Contentsquare
3.3
Microsoft Clarity
3.0
Optimizely
2.5
Google Analytics 4
1.8
Hotjar
0.9
Who’s doing it
Humantichumantic.ai
Added PostHog to its website
BizScoutbizscout.com
Added PostHog to its website
Equine Networkequinenetwork.com
Added PostHog to its website
Thematicgetthematic.com
Added PostHog to its website
AgelessRxagelessrx.com
Added PostHog to its website
SportsPlussportsplus.app
Added PostHog to its website
What it means
For sellers
A company adding product analytics is instrumenting its product for growth: the moment for experimentation, onboarding and data warehouse tools.
For founders
Teams that pick PostHog run analytics, flags and experiments in one place: a tool that plugs into it reaches them inside the workflow they already chose.
RisingNew Channels on the Media Plan6.5
FallingRetargeting Recedes4.5
RisingConsent Has a Home Country5.5
RisingEmail Beyond the Shop6.2
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Technologies are those found on each company website. Shares are of the websites read in the 30 days to 18 October 2026, by the industry of the company and the country of its headquarters.
Growth compares the websites that added a technology with those that removed it over the three weeks to 18 October, against those already running it, and is stated a month. Every change is dated when it is first seen, and nothing already on a website when it is first seen is counted as new.
Each finding's signal score, out of 10, states the strength of its evidence. The full methodology is shared on request.
Every finding is read the same way: its trend, its signal score, and where it stands by how common it is and how fast it is growing. How to read a report · Methodology overview
Cite this report
Quote and chart any figure in this report. Credit Fokals and link to this page, or to the finding itself.
Fokals, Marketing and Data Tools Report, October 2026. https://www.fokals.com/reports/martech-2026-10