Company lists · Data verified August 2026

Top 25 Website visitor identification tools based in the United States

Name: Website visitor identification tools based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 161 companies tracked

There are 161 website visitor identification tools headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 2,303 professional contacts across them, including 1,054 with verified work emails and 898 with mobile numbers. New York is the largest hub.

This list covers website visitor identification tools headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

161Companies

2,303Contacts tracked

1,054Verified emails

898Mobile numbers

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The 25 largest website visitor identification tools based in the United States

Ranked by team size

Top 25 of 161 website visitor identification tools based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Fullstory	Atlanta, GA	501-1,000	508	356
2	Quantum Metric	Colorado Springs, CO	501-1,000	458	343
	RevenueBasePublisher of this directory	Boston, MA	n/a	n/a	Try free
3	Omniture	Lehi, UT	1,001-5,000	78	13
4	Dataroid	New York, NY	11-50	76	49
5	Crazy EGG	La Mirada, CA	11-50	59	12
6	Leadfeeder	Glens Falls, NY	51-200	53	30
7	Mouseflow	Austin, TX	51-200	52	3
8	Matomo	Madison, WI	51-200	51	6
9	Zartico	Salt Lake City, UT	11-50	49	20
10	Kissmetrics	San Francisco, CA	11-50	48	4
11	Opensend	Las Vegas, NV	51-200	43	30
12	Sharethis	Palo Alto, CA	51-200	38	17
13	Brenton WAY	Woodland Hills, CA	11-50	28	4
14	Causalfunnel	San Francisco, CA	11-50	26	6
15	Targetclose	Los Angeles	11-50	23	5
16	Fourfront	Philadelphia, PA	11-50	19	8
17	Addthis	Culver City, CA	51-200	19	3
18	Salesviewer	New York, NY	11-50	16	10
19	Lift AI	San Francisco	11-50	16	3
20	Visual Visitor	Alpharetta, GA	11-50	14	12
21	Incendium AI	VA	11-50	11	8
22	Microsoft Clarity	Redmond, WA	11-50	11	1
23	Lead Anywhere	Ogden, UT	11-50	10	6
24	Instant Metric LLC	Dover, DE	11-50	10	4
25	Figpii	Chicago, IL	11-50	9	5

Showing 25 of 161 website visitor identification tools based in the United States

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Website visitor identification tools based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 18 HQs

898Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Website visitor identification tools by metro

Metro	Companies
Website visitor identification tools in New York	18
Website visitor identification tools in San Francisco	10
Website visitor identification tools in Austin	7
Website visitor identification tools in Chicago	5
Website visitor identification tools in Boston	4
Website visitor identification tools in Seattle	4
Website visitor identification tools in Los Angeles	4

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “website visitor identification tools”, with match quality audited by blind human judging, and headquartered in the United States.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 7 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many website visitor identification tools are there based in the United States?

There are 161 website visitor identification tools headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Fullstory, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most website visitor identification tools?

New York leads with 18 headquartered companies, followed by San Francisco (10) and Austin (7).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,054 verified decision-maker contacts tracked across these 161 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.