⚡ Identity Resolution Software

Identity resolution software matches data from multiple sources to create a unified profile of a user or company across devices, websites, and platforms by linking identifiers such as email addresses, cookies, and device IDs.

It relies on identity graphs, deterministic and probabilistic matching methods, and cross-device tracking, and is typically used for targeted advertising, customer analytics, lead generation, and personalized marketing.

According to our statistics, identity resolution software is used on 0.6% of all websites.
82.3% of these sites use only one identity resolution software solution, 11.1% use two, and 6.6% use three or more simultaneously.

Statistics based on 3.8M+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the leading identity resolution software in 2026, based on market share.

The most popular is ZoomInfo WebSights with a share of 27.4%, followed by LiveRamp with 14.9% and Lotame with 12.7%.

ZoomInfo WebSights 27.4%
LiveRamp 14.9%
Lotame 12.7%
RB2B 11.2%
ID5 10.6%
Epsilon 6.2%
Demandbase 5.6%
TruAudience 5.4%
Clearbit 5.4%
Wunderkind 4.6%
BlueConic 4.3%
Claritas 4.3%
Fingerprint 2.7%
Listrak 2.5%
Warmly 1.9%

You can also drill down by country:

🚀 Country Highlights

Here is a list of solutions that is especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

ID5 is #1 in Turkey ^(-4)
Spotler Activate is #1 in the Netherlands ^(-17)
LiveRamp is #1 in Germany ^(-1)
User.com is #1 in Poland ^(-19)
Gravito is #1 in Finland ^(-20)
Lotame is #1 in Indonesia ^(-2)
Epsilon is #1 in Singapore ^(-5)
RB2B is #1 in India ^(-3)
Fingerprint is #1 in China ^(-12)
Clearbit is #3 in France ^(-6)

✨ Best Identity Resolution Software

Below is a more detailed list of the top 25 of the 29 identity resolution software solutions we detect, ranked by their market share.

Rank	Name	Market share
1	ZoomInfo WebSights Vancouver, Washington, United States A B2B visitor identification platform that combines website behavioral analytics with prospecting and company intelligence data to reveal which businesses visit a website. Free$15,000+/year	27.4%
2	LiveRamp San Francisco, California, United States A data collaboration platform that provides identity resolution and data onboarding services to help organizations connect, match, and activate customer data across marketing and advertising systems. $5,000+/month	14.9%
3	Lotame Columbia, Maryland, United States An end-to-end data collaboration platform that enables digital marketers to unify, analyze and activate data. $$$	12.7%
4	RB2B Austin, Texas, United States A B2B website visitor identification platform that resolves anonymous traffic into individual visitor profiles, including names, LinkedIn profiles, job titles, and business emails. Free$79+/month	11.2%
5	ID5 London, United Kingdom An omnichannel identity platform that enables addressable advertising by helping publishers and advertisers recognize users across websites, mobile apps, and other digital properties. $$$	10.6%
6	Epsilon Irving, Texas, United States An enterprise marketing and advertising platform that uses AI and a proprietary identity database to deliver personalized, data-driven campaigns across digital and offline channels. $$$	6.2%
7	Demandbase San Francisco, California, United States A B2B marketing platform that combines data enrichment, account intelligence, and account-based marketing tools to help companies identify, target, and engage business accounts. $$$	5.6%
8	TruAudience Chicago, Illinois, United States A suite of solutions for privacy-first identity resolution, data enrichment, audience targeting and advanced analytics. $400,000/year	5.4%
9	Clearbit Cambridge, Massachusetts, United States A data activation platform that helps companies collect, enrich, segment, and activate B2B customer and prospect data to improve targeting and engagement across sales and marketing systems. $30,000+/year	5.4%
10	Wunderkind New York, United States A performance marketing platform that uses identity data and AI decisioning to help brands, publishers, and advertisers recognize users and deliver personalized messages across digital channels. $$$	4.6%
11	BlueConic Boston, Massachusetts, United States An AI-powered customer data platform that unifies first-party customer data into real-time profiles and uses AI agents to choose and execute personalized marketing actions. $$$	4.3%
12	Claritas Cincinnati, Ohio, United States An omnichannel marketing and audience intelligence platform that helps organizations analyze consumer behavior and build targeted audiences for advertising and customer acquisition. $1,645+/year	4.3%
13	Fingerprint Chicago, Illinois, United States A commercial browser fingerprinting solution that queries browser attributes and computes a hashed visitor identifier from them. FreeOpen source$99+/month	2.7%
14	Listrak Lititz, Pennsylvania, United States A cross-channel marketing automation platform designed for retail and e-commerce brands. $2,500+/month	2.5%
15	Warmly Cambridge, Massachusetts, United States A revenue orchestration platform that identifies individual website visitors and automates personalized outreach to them. $10,000+/year	1.9%
16	Lytics San Francisco, California, United States A customer data platform built into the Contentstack Agentic Experience Platform that helps companies collect, unify, and activate first-party customer data from multiple sources. Free$500+/month	1.5%
17	Intent IQ Long Island City, New York, United States An AI-powered identity resolution and advertising technology platform for cookieless, cross-device audience activation. $$$	1.1%
18	Spotler Activate The Hague, Netherlands A customer data platform for medium-sized B2B and B2C marketing teams that centralizes data from different sources and uses it to create optimized and personalized marketing campaigns. €650+/month	1.1%
19	Customers.ai Boston, Massachusetts, United States A B2C visitor identification and sales outreach automation platform that identifies anonymous website visitors and routes their contact data into email, advertising, and CRM systems. $600+/month	0.9%
20	User.com Hem, France A business intelligence and marketing automation platform that includes omnichannel CRM, conversational support, and email marketing tools. $$$	0.8%
21	Gravito Helsinki, Finland A Finnish consent management platform with built-in identity resolution. $$$	0.6%
22	Zeotap Berlin, Germany A customer data platform that lets companies integrate, unify, segment, and orchestrate customer data, offering a drag-and-drop interface and prebuilt machine learning models. $$$	0.5%
23	CustomerLabs Chennai, Tamil Nadu, India A first-party data platform that provides data collection, management, and activation across platforms. $99+/month	0.5%
24	Happierleads London, United Kingdom An AI-powered B2B website visitor identification platform that reveals the names, job titles, work emails, and company details of site visitors. $99+/month	0.5%
25	OnAudience London, United Kingdom Empowers AdTech and MarTech ecosystems by providing privacy-safe mobile, desktop, and CTV data based on cookieless solutions. $500+/month	0.4%

👉 See Also

⚡Visitor identification software

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 3,896,634 websites.
We currently track the presence of 29 identity resolution software solutions across the web.
Statistics were last calculated on October 18, 2026.
For more details, see our methodology and disclaimer.