The best website visitor identification tools, tested and ranked

Fastbase came first of ten with 3 out of 5. Of the 33 companies it named, 23 were correct and 24 had the right company details. It found 33 of our 50 visiting companies, a 66% hit rate.

Fastbase WebLeads tells you which companies are visiting your website. For each one, it shows the pages they viewed, how long they stayed, where they came from and what they searched for. It adds company details, key employees and contact data, and lets you export leads to Excel or a CRM. It names companies, not individual people. That puts it in the budget end of our visitor ID rankings, alongside tools that cost a few dozen dollars a month rather than thousands a year. It also works as a Google Analytics add-on and can flag visitors who clicked your Google Ads.

It scored 3 on all five parts. There is a free plan and Premium starts at $39 a month, among the lowest prices in our lineup. User feedback is thin and negative. On Trustpilot, checked November 3, 2026, Fastbase has 1.5 out of 5 from 32 reviews, labelled Bad, and every review is 1 star. A company reply label appears, but no reply text is shown. G2 has no reviews.

RB2B came second of ten with 3 out of 5. 26 of the 36 companies it named were correct, but 10 were wrong and only 24 had the right company details. It identified 36 of our 50 known visitors, among the best in our test, though 14 still went unnamed.

RB2B tells you who is visiting your website. You add one script to your site, and it tries to match each visit to a company and, for US visitors, to a named person with a LinkedIn profile. It then sends those leads to Slack, Microsoft Teams, your CRM or your outreach tools. Company-level identification works worldwide, but naming individual people works only for US visitors. RB2B is a product of Retention.com, an identity data company led by founder and CEO Adam Robinson, and it launched in March 2024.

It scored 3 on all five parts. The free plan and a $79 a month Starter plan are cheap entry points, but useful extras such as business emails start on Pro. There are very few independent reviews. On Trustpilot, checked November 3, 2026, RB2B has 2.7 out of 5 from just 4 reviews, labelled Poor, with 2 in the last 12 months. The profile is unclaimed, and the reviews are split between 1 and 2 stars.

Albacross came third of ten with 3 out of 5. It identified 31 of our 50 known visitors, which still left 19 visits unnamed. It passed 6 of our 8 checks on data sources, opt-out and data policy, one of the better results in our test.

Albacross tells you which companies visit your website. It matches each visitor's internet address to a company database, then shows which businesses looked at which pages. It is run by Albacross Nordic AB, a Swedish company, and its prices are shown in euros. On top of naming companies, it scores each account on how well it fits your target market and how interested it seems. It can then send hot accounts to your CRM, Slack, Microsoft Teams or ad audiences, and help you find decision makers through a LinkedIn contact finder and AI-assisted email and LinkedIn sequences.

Its weakest part was ease of use, at 2.5. Set-up is a simple snippet, but the platform packs in identification, scoring, outreach and ads syncing, which takes time to learn. There are very few independent reviews. On Trustpilot, checked November 3, 2026, Albacross has 2.2 out of 5 from just 8 reviews, labelled Poor, with none in the last 12 months. The profile is unclaimed, and 88% of the reviews give 1 star.

Warmly came fourth of ten with 3 out of 5. Of the 34 companies it named, 21 were correct and 22 had the right company details, so roughly a third were off. It passed 5 of our 8 checks on data sources, opt-out and data policy.

Warmly tries to work out who is visiting your website, down to the person, then helps you act on it. An AI agent can chat with visitors, book meetings, or follow up by email and ads, and alerts go to Slack or your CRM. It is closer to a full sales platform than a plain list of visiting companies. That sets it apart from most tools in our visitor ID rankings, which name companies only and cost much less. Warmly says it identifies people, not just companies, but it doesn't explain how it does this or how accurate it is.

Its weakest part was ease of use, at 2.5. There is a lot to set up across identification, scoring, chat and routing, which is more than a small team needs for a visitor list. There isn't much independent feedback to go on. On Trustpilot, checked November 3, 2026, Warmly has 4.0 out of 5 from just 3 reviews, all from April 2026. Those users liked person-level identification, found the AI agent easy to train, saw more inbound conversions and called support quick and professional.

Lead Forensics came fifth of ten with 2.5 out of 5. It named 36 of our 50 visiting companies, and 23 of those had correct company details, though 16 of the names were wrong. Unlimited users at no extra cost and an account manager add value, though you can't see the price until you've spoken to sales.

Lead Forensics tells you which companies visit your website. You add a tracking code to your site, and it matches each visit to a business using its own database of company internet addresses. Your sales team then sees which companies looked at which pages, and can follow up while the interest is fresh. It names companies, not individual people. If you want to reach someone at a company it has identified, it can find decision makers, but contact data is reported to be an extra. It is run by Lead Forensics Limited in the UK, with US and UK phone lines on its site.

Its weakest part was compliance, at 2. It passed only 4 of our 8 checks on data sources, opt-out and data policy, despite showing ISO 27001 and GDPR badges. Most users are happy, but a sizeable group is not. On Trustpilot, checked November 3, 2026, Lead Forensics has 4.6 out of 5 from 998 reviews. 72% give 5 stars and 9% give 4 stars, but 17% give 1 star.

Leadberry came sixth of ten with 2.5 out of 5. Only 20 of the 32 companies it named were correct, though company details were right for 21 of 32. It named 32 of the 50 known companies that visited our test site, a coverage of 64%.

Leadberry is a budget website visitor identification tool run by Brandlift, Inc., a California company based in Los Angeles. You add a tracking script to your site, and Leadberry names the companies that visit, filtering out traffic from home internet providers. It shows the pages each company viewed, how long it stayed and where it came from. It also adds company details such as website and industry, some contact details, and a LinkedIn feature that finds people you have in common for social selling. A similar-leads search suggests lookalike companies by industry and location.

It scored 2.5 on all five parts. At $29 a month billed monthly it is the cheapest paid tool in our lineup, but 12 of its 32 names were wrong. There aren't many user reviews. On G2, Leadberry has 4.1 out of 5 from 17 reviews, and on Capterra 3.8 out of 5 from 10 reviews, both from search listings checked November 3, 2026. We found no Trustpilot page.

Retention.com came seventh of ten with 2.5 out of 5. Only 18 of the 30 companies it named were correct, and the company details were right for 19 of 30. It named 30 of the 50 known companies that visited our test site, a coverage of 60%.

Retention.com calls itself an identity data company. You put a single tag on your website, and it tries to match anonymous visitors to real people, not just companies. It then adds data such as hashed emails, ad IDs, professional details and behaviour, and delivers it through APIs, flat files or integrations. Its site claims more than 250 million US identities and over 600 attributes. Its homepage lists four offers: the core identity data business, RB2B for B2B visitor identification, Moltsets contact data APIs, and Retention FLEX for direct-to-consumer ecommerce. The core product and Retention FLEX are sold through sales with no posted prices. RB2B is the self-serve product with public plans, and we review it separately.

It scored 2.5 on all five parts. The core product has no public price, and the self-serve RB2B plans it lists start at $79 a month for a tool that got 12 of 30 names wrong. We couldn't find a review profile for Retention.com itself. The nearest is the unclaimed Trustpilot profile for RB2B, checked November 3, 2026, which shows 2.7 out of 5 from just 4 reviews, labelled Poor. Half give 2 stars and half give 1 star.

Snitcher came eighth of ten with 2.5 out of 5. At $49 a month billed monthly for up to 50 companies, with all features and unlimited team members, it is fairly priced for what it found. Only 20 of the 32 companies it named were correct, and the company details were right for just 17 of 32.

Snitcher is a website visitor identification tool built near Amsterdam, founded in 2015 by Jerre Baumeister and bootstrapped with no venture funding. You add a tracking script to your site, and Snitcher matches each visit's IP address to a company. It then shows which businesses visited, which pages they viewed and whether they came back. On top of that, it adds intent signals, live alerts in Slack or email, contact finding for the people behind a visit, and syncing with CRMs such as HubSpot, Salesforce and Pipedrive. There is also an IP-to-company API, called Radar, for developers and white-label use, priced separately.

Its weakest part was ease of use, at 2. Set-up is a single script, but with 12 wrong names out of 32 your team has to check each lead by hand before using it. Users rate Snitcher highly. On G2, a search listing checked November 3, 2026 showed 4.8 out of 5 from 220 reviews, though the count varied between snapshots. On Capterra it has 4.4 out of 5 from 7 reviews, checked the same day. We found no Trustpilot page.

Leadinfo came ninth of ten with 2 out of 5. Only 15 of the 27 companies it named were correct, so 12 of its leads pointed at the wrong business. It named 27 of the 50 known companies that visited our test site, a coverage of 54%.

Leadinfo is a website visitor identification tool from the Netherlands, founded in 2017. You add a tracking code to your site, and it matches the IP address of each visit against a database of 220 million companies. It then shows which businesses visited and what they looked at. It names companies, not individual people. It also offers contact data for decision makers, lead scoring, screen recordings on higher plans, and two paid add-ons: Autopilot for automated outreach and Leadbot, a chat bot. It connects to more than 70 tools, and the app works in English, Dutch, German and Danish.

It scored 2 on all five parts. At 59 EUR a month for the cheapest plan billed monthly, you pay for a list where 12 of 27 names were wrong, while tools with lower starting prices scored higher. There is very little user feedback. On Trustpilot, checked November 3, 2026, Leadinfo has 2.3 out of 5 from just 7 reviews, labelled Poor. 86% give 1 star and 14% give 4 stars, and we saw no company replies.

Leadview.io came tenth of ten with 2 out of 5. Of the 29 companies it named, only 17 were correct and 16 had the right company details. It found 29 of our 50 visiting companies, a 58% hit rate, which left a lot of visits anonymous.

Leadview.io tells you which businesses are visiting your website, and shows which pages they viewed and how long they stayed. It then adds names, job titles, emails and phone numbers for decision-makers at those companies, and scores each lead so your team knows who to call first. It names companies, not individual visitors, and says it only tracks business IP addresses. What sets it apart from most tools in our visitor ID rankings is how you buy it: there's no public price or self-serve sign-up, so you book a demo and get a 14-day trial code.

It scored 2 on all five parts. There are no public prices, so you can't compare cost, and its results trailed tools with clear, low prices. We couldn't find any independent user reviews for Leadview.io. Its Trustpilot page didn't exist when we checked, and searches of G2 and Capterra turned up nothing.