⚡ 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 0.8% of all websites.
84.6% of these sites use only one identity resolution software solution, 10% use two, and 5.5% use three or more simultaneously.

Statistics based on 3.5M+ 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 19.6%, followed by Leadfeeder with 17.5% and LiveRamp with 11.3%.

ZoomInfo WebSights 19.6%
Leadfeeder 17.5%
LiveRamp 11.3%
Lotame 9.9%
Leadinfo 7.7%
ID5 7.4%
Apollo 6.2%
Epsilon 4.6%
Lead Forensics 4.3%
Demandbase 3.7%
TruAudience 3.7%
Wunderkind 3.3%
Claritas 3.1%
Spotler 2.7%
Fingerprint 2.2%

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.

Leadfeeder is #1 in Finland ^(-1)
Leadinfo is #1 in the Netherlands ^(-4)
ID5 is #1 in Turkey ^(-5)
Lead Forensics is #1 in the United Kingdom ^(-8)
SalesViewer is #1 in Germany ^(-16)
Lotame is #2 in the United States ^(-2)

✨ Best Identity Resolution Software

Below is a more detailed list of the top 25 of the 34 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	19.6%
2	Leadfeeder Karlsruhe, Germany A B2B visitor identification software that tracks and identifies companies that visit your website - even if they don't leave their contact information. Free$1,188/year	17.5%
3	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	11.3%
4	Lotame Columbia, Maryland, United States An end-to-end data collaboration platform that enables digital marketers to unify, analyze and activate data. $$$	9.9%
5	Leadinfo Capelle aan den IJssel, Netherlands A lead generation platform that identifies companies visiting a website to help B2B sales and marketing teams discover potential prospects. $107+/month	7.7%
6	ID5 London, United Kingdom An omnichannel identity platform that enables addressable advertising by helping publishers and advertisers recognize users across websites, mobile apps, and other digital properties. $$$	7.4%
7	Apollo Covina, California, United States A sales intelligence and engagement platform designed to give sales teams and marketers the tools they need to efficiently find, engage, and convert prospects. Free$59+/month	6.2%
8	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. $$$	4.6%
9	Lead Forensics London, United Kingdom A B2B website visitor identification and lead generation platform that reveals the companies behind anonymous website traffic and converts them into actionable sales leads. $6,000+/year	4.3%
10	Demandbase San Francisco, California, United States A B2B marketing platform that combines data enrichment, account intelligence, and account-based marketing tools to help companies identify, target, and engage business accounts. $$$	3.7%
11	TruAudience Chicago, Illinois, United States A suite of solutions for privacy-first identity resolution, data enrichment, audience targeting and advanced analytics. $400,000/year	3.7%
12	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. $$$	3.3%
13	Claritas Cincinnati, Ohio, United States An omnichannel marketing and audience intelligence platform that helps organizations analyze consumer behavior and build targeted audiences for advertising and customer acquisition. $1,645+/year	3.1%
14	Spotler The Hague, Netherlands A marketing and customer engagement platform specializing in email marketing and marketing automation. £300+/month	2.7%
15	Fingerprint Chicago, Illinois, United States A commercial browser fingerprinting solution that queries browser attributes and computes a hashed visitor identifier from them. FreeOpen source$99+/month	2.2%
16	Listrak Lititz, Pennsylvania, United States A cross-channel marketing automation platform designed for the retail industry. $$$	2.1%
17	SalesViewer Bochum, Germany A sales tracking and lead generation platform that identifies anonymous website visitors and translates their visits into B2B sales and marketing signals. €99+/month	2%
18	Qualified San Francisco, California, United States A conversational marketing platform designed to help B2B companies connect with qualified buyers in real time and engage with them instantly. $3,500+/month	2%
19	Visitor Queue London, Ontario, Canada A B2B online website visitor tracker that tells you the contact details of the businesses that visit your website. $39+/month	1.5%
20	Warmly Houston, Texas, United States A solution that identifies individuals and businesses visiting your site and automates personalized outreach to them. $10,100+/year	1.3%
21	Lytics Portland, Oregon, United States A customer data platform built on Google Cloud that helps companies collect, unify, and activate first-party customer data from multiple sources while maintaining control over security, privacy, and governance. Free$500+/month	1%
22	Customers.ai Boston, Massachusetts, United States A visitor identification and prospecting platform that provides B2C businesses and marketing agencies with tools to find and engage customers. $199+/month	0.8%
23	Intent IQ Long Island City, New York, United States A cross-device identification service for cookieless audience activation. $$$	0.8%
24	User.com Hem, France A business intelligence and marketing automation platform that includes omnichannel CRM, conversational support, and email marketing tools. $$$	0.6%
⏳	Instantly.ai Sheridan, Wyoming, United States A sales engagement and lead intelligence platform that enables businesses to find prospects, automate outreach campaigns, and manage lead interactions with an integrated AI-powered CRM. $47+/month	0.6%

🗃️ 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 3,512,920 websites.
We currently track the presence of 34 identity resolution software solutions across the web.
Statistics were last calculated on May 16, 2026.
For more details, see our methodology and disclaimer.