Companies Using Microsoft Clarity

I have spent a decade building web crawling and technographic systems, and with a technology this large the first question is whether the count can be trusted at all. As of our August 2026 crawl we verify 862,512 active domains running Microsoft Clarity, and we matched 474,072 of them to a company record with industry, headcount and location.

1. We tested the obvious way this number could be wrong

Clarity is an ordinary English word, and two unrelated products in our corpus carry it: VMware's Clarity Design System, a front-end component library, and PureClarity, an ecommerce personalization tool. If a count of 862,512 were quietly absorbing either of them, everything below would be worthless, so I measured the overlap before writing a word of analysis. We detect the design system on 125 domains in total, of which 5 also run Microsoft Clarity. PureClarity sits on 36 domains, of which 16 overlap. Neither is capable of moving a number in the hundreds of thousands. The hypothesis failed, and a failed check is worth publishing, because it tells you which way the error would have run had it held.

"Publish the checks that came back clean. A number nobody tried to break is just a number." - Mehmet Suleyman, CEO at TechnologyChecker.io

2. Growth trajectory

The chart above shows the current crawl only. Our records, which are not plotted there, open in October 2020 with 11 domains, the month Clarity became generally available, and the early ramp is steep and genuine: 52 in November 2020, 1,240 by January 2021, 3,502 by February. From there it compounds. 14,155 at the end of 2021, 40,963 at the end of 2022, 90,123 at the end of 2023, and 206,787 at the end of 2024, a year in which the active count more than doubled from 93,942 in January.

I would not hand a sales team the recent end of that curve without a warning. There is a step between our 2025 coverage and our 2026 coverage, and it is not purely a rush of adoption. The domains we crawl turn over every month, dead sites leave and newly discovered ones arrive, and the signals we detect Clarity with broaden over time. Read the level and the position rather than the slope across that step: 862,512 domains, 1st of 34 in Heatmaps & Session Recording, and more domains than the other 33 tools in the category combined.

Sales Signal: Category education is over. Anyone you pitch behavioral analytics to has very likely installed the free one already. The opening question is what Clarity does not do for them, not whether they need heatmaps.

3. Customer profile

48.73% of the 450,435 matched deployments where we know headcount sit at 1 to 10 staff, and 77.74% at 50 or fewer. That is what a zero-price tool looks like: nothing to approve, no traffic ceiling to forecast, no procurement. The typical Clarity site belongs to a company founded in the 2010s, the largest decade bracket at 36.74%.

The enterprise tail is thin but real. 1,802 domains, 0.4% of the matched base, belong to companies with more than 10,000 staff, and the names are recognizable: IBM, SAP, AT&T, General Motors, Wipro, HCLTech, Tech Mahindra, Concentrix, ADP, Medtronic. Read the detection URLs before reading that as enterprise adoption. IBM's is community.ibm.com. These are departmental installs on a forum, a careers portal or a regional microsite, where the case for a paid seat across every team was never going to be made. That is the free tool's real enterprise proposition. There is no purchase order to sign.

Sales Signal: The conversion-ready segment is the 11 to 200 band, 42.27% of the matched base. They have proven they act on behavioral data and they are large enough to hold a budget, but small enough that one missing capability blocks a real workflow.

4. Geography, and why India ranks third

The United States leads with 142,528 domains, the United Kingdom follows at 40,015, and India is third at 33,080, ahead of Brazil at 28,612 and Australia at 21,694. Third is unusual. Most Western analytics tools place India fifth or lower in our data. The reading I would defend is the simplest one: a free product with no traffic limit removes the currency barrier that makes a metered monthly plan feel expensive, and India is a very large services and developer market. Our own named accounts show it, with Wipro, HCLTech, Tech Mahindra, LTIMindtree, Mahindra & Mahindra, Flipkart, Axis Bank and Kotak Mahindra all detected.

Sales Signal: For anyone selling a paid alternative, India and Brazil are top-of-funnel markets rather than conversion markets. Concentrate paid conversion effort on the 142,528 US domains and the 40,015 in the UK, and treat the rest as reach.

5. The migration story: Clarity is taking Hotjar's market

This is the most important table on the page. We have only tracked switching since March 2026, so read it as recent movement, and note that the 90-day and all-time columns are nearly identical because 90 days is almost the whole observation window. In it, 6,308 domains dropped Hotjar while continuing to run Clarity and 3,295 moved the other way. Net, Clarity is up 3,013 domains against the incumbent, a flow of roughly 1.9 to 1.

Clarity also nets positive against Lucky Orange at 867 in against 186 out and Contentsquare at 859 in against 377 out, and it takes 489 from Smartlook and 427 from Mouse Flow. It runs close to level with Crazy Egg, 780 in against 915 out, and it is genuinely behind on only two small corridors, Decibel and Beusable, at 610 and 585 domains out.

One caution on the Contentsquare row. Contentsquare has owned Hotjar since 2021, so movement between those two brands is internal consolidation rather than a competitive result, and it should not be scored as Clarity's win or loss.

What I will not do is put a revenue or customer number on either side of this. We count domains. What the domain count supports is a directional claim about price: Microsoft gives Clarity away with no traffic limits, Hotjar sells metered plans, and the flow between them runs 1.9 to 1 toward the free one.

"A 1.9 to 1 flow away from a well-built incumbent is not a verdict on the product. It is a verdict on the invoice." - Mehmet Suleyman, CEO at TechnologyChecker.io

Sales Signal: The 6,308 domains that left Hotjar for Clarity are a budget-pressure list, not a quality-preference list. They decided behavioral analytics matters and that paying for it did not. The pitch that works there acknowledges the trade they made and prices against it.

6. Technology ecosystem

Google Analytics sits alongside Clarity on 87.89% of the domains where we resolved a full stack. That is co-installation, not competition: one counts sessions and sources, the other records what happened inside them, and Microsoft ships an integration between the two. Cloudflare at 54.53% and WordPress at 34.54% describe the long tail of self-managed small sites that the size distribution already implied. Shopify at 15.65% is the row with money attached, because a merchant watching a checkout replay can price the fix.

Sales Signal: The Shopify overlap is the highest-intent slice of the base. Those sites have a conversion rate, a cart value and a reason to act on a session recording within the week.

7. What the reviews add

G2 reviewers praise the free pricing above every feature, 38 mentions against 29 for easy setup, which is rare and tells you where the value sits. The leading complaint, at 14 mentions, is limited advanced analytics: no A/B testing, no funnel visualization, no ecommerce event tracking. Those two observations are the same observation. Clarity is priced at zero and capped on depth, and that ceiling is where the reverse migration comes from. The 3,295 domains that went back to Hotjar are the population that hit it.

Key takeaways

1. Clarity is the category rather than a player in it. 862,512 domains, 53.63%, 1st of 34, and more than the other 33 tools combined.

2. It is taking Hotjar's market at roughly 1.9 to 1. Net 3,013 domains since March 2026. Price, not capability, is the most defensible explanation.

3. The base is small businesses. 77.74% at 50 staff or fewer. The enterprise names are departmental installs on subdomains, not company-wide rollouts.

4. India at third is a real signal. 33,080 domains, ahead of Brazil and Australia, in a market where a metered plan is a harder sell.

5. We tested the count and it held. The two other Clarity-named products in our corpus contribute 5 and 16 overlapping domains respectively.

6. Read the level, not the slope. Our coverage of the web changed between 2025 and 2026, both in which domains we crawl and in what we detect, so the current count is the reliable figure and the long-run curve is a trend.

Explore the full Microsoft Clarity install base with company-level filtering at TechnologyChecker.io. Our dataset covers 862,512 active Clarity domains and 474,072 matched companies including industry, size, location and tech stack. Use the "Create Lead List" feature to build targeted prospect lists, or set up a Signal to track when companies start or stop using Clarity.