
Top 11 Website Visitor Identification Software & Tools [August 2025]
I will review the best website visitor identification software so that you can choose the best one for yourself and start turning your website visitors into revenue.
What Is Website Visitor Identification?
Website visitor identification is a technology that reveals anonymous website visitors and matches them to company databases. It converts unknown traffic into actionable leads by identifying the companies, organizations, and sometimes individuals visiting your site. This enables sales teams to proactively engage prospects who have shown interest but haven't submitted contact information.
Visitor identification software tells you who is browsing your website, when they’re doing it, and what pages they’re looking at.
The degree of precision with which a given software platform can achieve this goal varies. The “What content are they engaging with?” question isn’t so difficult. Uncovering the exact person who is on your site is a little harder.
It's not a perfect science, but there are ways for you to improve your visitor identification.
For instance, with Warmly enabled on your website, you’ll be able to uncover 15% of contacts that visit your site and 60% of companies. That’s without you doing anything.
If you start sending outbound emails with Warmly with a bit of tracking code embedded, you’ll be able to identify even more.
What Are The Best Website Visitor Identification Software?
The best website visitor identification software are: Warmly, Dealfront, Leadforensics, Clearbit, ZoomInfo, Leadinfo and Factors AI.
Here's a breakdown:
Tool | Use Case | Price |
---|---|---|
Warmly | Signal-based revenue orchestration: lead scoring, AI SDR, chat, and live lead engagement. | Data Agent: from $10,000/yr; Outbound Agent: from $14,600/yr; Inbound Agent: from $20,000/yr; modular pricing by component. |
Dealfront (formerly Leadfeeder) | EU-focused website visitor identification and sales intelligence. | Free plan (100 companies/month); Paid: €139/mo; Sales Intelligence: Custom pricing. |
Lead Forensics | UK/EU-focused legacy website visitor identification. | Pricing not disclosed (two tiers: Essential & Automate). |
Clearbit | Sales intelligence and contact enrichment with HubSpot CRM integration. | Free plan; $50–$275/mo (usage-based credits). |
Leadinfo | Simple website visitor deanonymization for SMEs. | €49/mo (100 visitors); scales to €499/mo (10,000 visitors). |
VisitorQueue | Marketing-focused visitor identification with website personalization. | $31–$239/mo (visitor-based); +$159/mo for personalization. |
Snitcher | Affordable visitor identification for agencies, with IP-to-company API. | From $39/mo (100 identifications); usage-based scaling. |
Happierleads | SME-focused visitor identification with outreach tools. | From $120/mo. |
Factors AI | Marketing-focused visitor tracking with revenue attribution and integrations. | Free plan; Paid from $149/mo. |
ZoomInfo | Enterprise GTM platform with visitor ID, intent data, and sales ops. | Custom pricing; typically $40k+ annually. |
Albacross | EU-based visitor identification with buyer intent data. | From €139/mo. |
1. Warmly

Warmly offers the best visitor identification software on the market with our signal-based revenue orchestration platform.
Behind this definition stands a simple yet powerful lead generation and conversion machine, as Warmly:
- Picks up the buyer intent signals your prospects drop off on your channels and across the web.
- Translates them into actionable insights to help you understand who your hottest leads are right now.
- Leverages those signals and insights to orchestrate comprehensive outreach workflows.
Let’s get a closer look at some of the features that make Warmly an attractive solution for industry challengers:
Feature #1: Identifies your website visitors to the contact level
Warmly lets you maximize your website’s lead generation potential by identifying both the companies and individuals visiting it.
You add a snippet of Warmly’s code to your website, and the platform will start revealing leads in minutes.
In addition to essential company and individual-level identification, Warmly will also enrich each visitor’s:
- Contact data (email address, phone number, social media profiles, etc.).
- Firmographics (company location, size, funding, etc.).
- Demographics (individual names, job positions, etc.).
- Technographics (tools and software a company utilizes).

Our platform optimizes our data through a waterfall approach, which means we use multiple data providers (20+), including 2 other leading website de-anonymization providers to validate the accuracy, quality & overall match rate of our signal & contact data.
This leads to:
- Higher data quantity: Multiple sources expand match rates.
- Higher data quality: Proprietary cleansing and confidence scoring validate accuracy.
💡 To maintain the robust data quality and quantity, we continuously monitor vendor performance and validate our proprietary matching algorithms.
➡️ These systems allow us to track quality and quantity metrics in real-time, ensuring that both contact-level and company-level data meet the high standards our customers expect.
Warmly’s transparent data commitment means you can test our data quality with our free tier before committing to us as a data provider.
Because we aggregate data from 25+ providers and cross-check it using our proprietary waterfall technique, we can validate and verify data on your behalf, ensuring it’s of the highest quality.
See more in our overview of data quality.

Feature #2: Reveals your hottest leads based on intent data
We understand that knowing who your leads are is only one part of successful outreach and conversion.
This is why our platform collects intent data for each lead, allowing you to understand who your hottest leads are right now.
The platform captures three types of intent signals:
- First-party intent, which includes intent signals, leads left in your channels (website, app, etc.), such as website visits, the specific pages they visited, time spent on high-intent pages, recurring visits, etc.
- Second-party signals, which come from monitoring LinkedIn for things like job change intent, new funding rounds, etc.
- Third-party intent, including web searches that include keywords relevant to your product, visits to competitors’ websites or interactions with their ads, etc.

As a result, your sales reps will get:
- A complete overview of which of your leads are most likely to convert right now.
- Critical insights into each lead, which they can leverage to tailor their outreach strategies accordingly.
💡 What’s more, your enterprise will be able to deliver personalized pop‑ups that feel helpful, not intrusive, such as a custom piece of content, a relevant case study, or a direct link to book time with your team.

We call these high-converting pop-ups Warm Offers because we knew that both SDRs and users are tired of one-size-fits-all generic CTAs.
Warmly identifies visitors by company, behavior, and intent and then dynamically personalizes the pop-up content based on their buyer journey.
Feature #3: Signal-based sales orchestration
We know that regardless of how good and alert your sales reps are, some prospects always fall through the cracks.
Warmly handles this by enabling you to automate essential outreach workflows, ensuring you’ll never miss a high-value opportunity again.
Firstly, there’s the Orchestrator, which enables you to set up automated email and LinkedIn outreach sequences by:
- Specifying the trigger that sets the sequence in motion (e.g., a visitor matching your ICP lands on your website).
- Defining the criteria the visitor needs to meet to be targeted (company size, industry, individual’s job role, etc.).
- Specifying the frequency at which you want the workflows to run and the maximum number of people targeted in a single account.
- Deciding on the action you want the Orchestrator to take (send contextual email and/or personalized LinkedIn DM or connection request).

Secondly, AI Chat, Warmly’s AI-powered chatbot, automatically engages and qualifies leads, offers collaterals, answers questions, and books meetings while ensuring that every interaction with every lead is contextual and tailored to their prior interactions.

You can test it out: 👇
Finally, Warmly lets you automate lead routing, as your reps will be notified in Slack the second a high-intent lead or visitor matching your ICP lands on your website.

Feature #4: A B2B Prospect Database: Coldly
Warmly comes with Coldly, a database with 200M+ accounts and contacts, which gives your sales team an excellent starting point for prospecting.
Coldly includes all the B2B data your sales reps need to make initial contact, including:
- Validated emails.
- Phone numbers.
- LinkedIn profiles.
Our database also provides 25+ B2B filters and customizable data filters that you can set up, enabling your sales team to build highly targeted prospect lists in a few seconds.

Coldly also has a browser extension that lets you scrape essential B2B contact data from any source on the web, including LinkedIn profiles, company websites, etc.
You will have both accurate contact data and the right tools to pick up buyer intent signals and set up workflows on top of them.
Feature #5: Live video chat
Warmly enables your sales reps to engage leads directly via on-site live video chat.
Your team can do what they do best - engage high-quality leads while they’re still hot and nurture them into conversion.
If you go to the “Warm Call” section of the platform’s dashboard, you’ll see all the companies and individuals visiting your website right now, in addition to intent and B2B data on each visitor.
💡 When sales reps assess the time is right, or receive a Slack notification that a high-value lead has landed on your website, they can initiate a video call or send a contextual message in the text chat, emphasizing that they’re an actual human.

Reps can then leverage the data Warmly revealed to further nurture, warm up, and convert leads.
Warmly’s Integrations
Warmly integrates with a wide range of platforms, including:
- OpenAI.
- Slack.
- Apollo.
- Outreach.
- Demandbase.
- Leadfeeder.
- Clearbit.
- People Data Labs.
- And more.

In addition to deep integrations with several lead intelligence platforms, Warmly provides a Warm Bundle: partner discounts for over 25 sales, marketing, and GTM tools.

This way, your team can access many relevant tools and combine them with Warmly at a fraction of their usual price.
Pricing
Warmly’s pricing is modular and component-based.
You can choose the components that best match the needs of your business, as components are priced by output and not just a monthly fee.
There are 3 paid annual plans available in Warmly’s pricing model:
- Data Agent Plan: Starting at $10,000/year, which includes 10,000 monthly credits, person-level 1st party web visitor de-anonymization (via RB2B, Vector, etc.), all Warmly Signals with warm lead alerts via Slack or Teams, HubSpot & Salesforce integration, and 100+ other sales/marketing tech integrations.
- Outbound Agent Plan: Starting at $14,600/year, which includes AI Data Agent (signals & enrichment), native LinkedIn and marketing outbound automation, ability to push leads to sales sequencers (Salesloft, Outreach, etc.) and ad audiences, domain warmup, and lead routing with custom CRM fields.
- Inbound Agent Plan: Starting at $20,000/year, which includes AI Data Agent (signals & enrichment), Warm AI Chat with intent-powered chatbot & live video, Warm Offers (pop-ups) and Warm Calling (live video), and lead routing with custom CRM fields.

➡️ Warmly’s pricing is ideal for larger SMB and MM companies with a growing or mature GTM motion with SDR, sales, and marketing functions.
2. Dealfront (formerly Leadfeeder)

Dealfront is a European-based go-to-market platform, perhaps better known by its previous name: Leadfeeder.
In fact, Leadfeeder was acquired by investment firm Great Hill Partners, who also acquired Echobot, merging the two solutions into Dealfront.
Leadfeeder brought the website visitor intelligence side of the equation, while Echobot’s sales intelligence, prospecting tools, and CRM integrations round out the suite.
Why Dealfront (formerly Leadfeeder) Is A Good Option
Dealfront is popular in Europe, which makes sense, given they’re based there.
Basically, it looks like they’re trying to create the ZoomInfo (more on them later) of Europe. All of their contact data is in the EU, and even commentary from leadership is pretty ambitious:
“We want to be the biggest in Europe….It’s going to take a few years, but I think we’re succeeding…We have long had customers all over the world. After the merger, we will be able to offer something that no one else can.”
Unique(ish) in the market is that Dealfront offers a free tier rather than a trial, though it comes with some severe limitations:
- You can only seed data from the last seven days
- A maximum of 100 identified companies monthly
Where Dealfront (formerly Leadfeeder) Falls Short
It’s tough to predict what’s going to happen from here on out.
Mergers like this occasionally produce market-leading whales. More often, they lead to a halt in innovation and just another clumsy product in an already busy market.
We’ll wait and see, but here’s what we can say in terms of cons right now:
- Website deanonymization is very limited, with no timelines or further information other than “this company visited.”
- Company data isn’t as good as market leaders like 6sense
Dealfront (formerly Leadfeeder) Pricing
As of writing, Dealfront’s pricing model is still broken down into the two tools.
For Leadfeeder, it's either the not-that-usable free plan, or the paid plan at €139 a month. For their “Sales Intelligence” stack (so, Echobot), pricing is custom-built.
3. Lead Forensics

Lead Forensics is another point solution for website visitor identification. Starting up back in 2009, they seem to have been around the longest.
Why Lead Forensics Is A Good Option
Lead Forensics is a well-known name in the visitor identification software space, mostly because they’ve been around so long.
They’re London-based, so data across Europe and the UK is a strength compared to US-based solutions, but that’s about it.
Where Lead Forensics Falls Short
The fact that Lead Forensics is a legacy platform tends to work against it more than it does for it.
In sales conversations at Warmly, we’ve heard a lot of complaints about Lead Forensics’ data quality being poor and not super detailed.
Their integrations aren’t up to scratch, and it appears they aren’t really innovating.
Also, being a tool that dates back to 2009, the UI feels a little clunky and dated.
Lead Forensics Pricing
Lead Forensics has two tiers (Essential and Automate) but doesn’t share any details about what they cost—common among legacy tools.
4. Clearbit

Clearbit is one of the most well-respected names in contact data and intelligence.
They were recently acquired by HubSpot, which is a bit of a game-changer for Clearbit (for good and for bad).
Why Clearbit Is A Good Option
Clearbit does a lot more than just website visitor identification; they’re also a best-in-class sales intelligence platform and have seriously good contact enrichment.
They also have a fantastic prospecting tool for identifying buying committees.
What’s most intriguing about Cleabrit right now is that they were recently acquired by HubSpot.
If you’re a HubSpot user, this is great news. It means you pretty much get your CRM enriched (once the whole acquisition and integration process is complete).
But it does have a downside.
Where Clearbit Falls Short
Using Clearbit now pretty much requires you to use the HubSpot CRM.
For example, as soon as you sign up for a free trial, it asks you to integrate your HubSpot account. This is a huge departure from where Clearbit came from, which was essentially just an API for data access.
If you’re using any other CRM, then Clearbit is unlikely to be a valid contender for you into the future.
The other big drawback with Clearbit as a standalone tool is that it lacks strong out-of-the-box playbooks for sales workflows. It’s always been a developed-focused tool, which you can then plug into your existing enablement and engagement tools.
This might change with the HubSpot acquisition, however.
Clearbit Pricing
Clearbit's pricing has a really basic free plan and charges between $50 and $275 a month, depending on the number of “credits” you need.
5. Leadinfo

Leadinfo is another visitor identification tool undergoing a lot of changes.
They were recently acquired by team.blue, who describe themselves as “an ecosystem of successful brands working together across regions to provide customers with everything they need to succeed online.”
Take from that what you will.
The “ecosystem” has been steadily gobbling similar companies:
- Leadinfo acquired intent-based sales engagement platform Leadcamp to expand lead engagement functionality
- WebProspector.de was added to the mix to expand the company’s integrations to well-known tools like Slack, Salesforce, and SalesLoft
This is clearly a space that’s undergoing a lot of consolidation right now. Point solutions that only deanonymize traffic are no longer sufficient; companies need engagement features and intent data as well.
Why Leadinfo Is A Good Option
The truth is that Leadinfo doesn’t look all that different from the Leadfeeder component of Dealfront.
They’re Europe-based, offer basic visitor identification, and have been recently acquired, which brings with it the rocky territory of having to stitch multiple tools together.
Pricing is super transparent, which is a nice change in this vertical.
Where Leadinfo Falls Short
As of writing, Leadinfo doesn’t do much other than simple website deanonymization.
That might change with the merges in play, but right now, customers are still left with the problem of what exactly to do with the information they’ve gained.
Leadinfo Pricing
Leadinfo offers transparent pricing and operates on a usage-based model.
This is great for smaller organizations, who’ll pay €49 per month for 100 website visitors. But it does mean that your costs scale quickly as you do. At 10,000 visitors, you’ll be paying €499 monthly.
6. VisitorQueue

VisitorQueue is a somewhat unique solution here in that it’s focused more on the marketing than the sales use case.
Why VisitorQueue Is A Good Option
VisitorQueue has two main cards to play:
- Website visitor identification
- Website personalization
The second one is what makes them unique in this space: you can personalize website content based on demographic information (once you’ve identified the visitor, of course).
Other pros include a decent number of integrations for building a connected tech stack and decent visitor data that’s more granular than solutions like Leadinfo or Dealfront.
Where VisitorQueue Falls Short
Being marketing-focused, VisitorQueue isn’t the ideal solution for the sales team.
It doesn’t offer any sales automation or engagement functionality. You’ll have to stitch it together with a sales engagement solution like SalesLoft or Outreach.
VisitorQueue Pricing
VisitorQueue pricing is complex but transparent.
You pay based on the number of monthly visitors you’d like to deanonymize (from $31 to $239 a month), then add $159 a month if you want website personalization functionality as well.
7. Snitcher

Snitcher is another website visitor identification software solution based out of Europe.
The unique difference with this tool is that it is primarily used by agencies who want to identify website traffic on behalf of their clients to attribute traffic growth to marketing campaigns.
Why Snitcher Is A Good Option
Snitcher is quite affordable, starting at just $39 a month. They have a usage-based model, so you pay based on the number of visitors you identify.
They also offer an IP to Company API, so you can just use Snitcher as the data source for your self-built tool.
Where Snitcher Falls Short
Like many of the visitor identification tools mentioned on this list, Snitcher doesn’t offer any data enrichment, third-party buyer intent data, or sales workflows and playbooks.
Snitcher Pricing
Pricing starts at $39 a month for up to 100 company identifications and scales up from there based on usage.
8. Happierleads

Happierleads offers four products:
- Reveal - Visitor identification
- Prospector - Contact database
- Engage - Email and LinkedIn outreach
- Enrich - An API for contact data enrichment
Interestingly, it's also available as a white-labeled tool built for the agile B2B marketing and sales team.
Why Happierleads Is A Good Option
The unique thing about Happierleads is that they appear to offer LinkedIn sequencing.
I say appear because they say they do, but don’t really offer any insight into how they do it.
For example, Warmly offers LinkedIn sequencing as part of our sales outreach functionality, and that’s sequenced through our partner Salesflow.
Beyond that, they’re another option for website visitor identification but don’t really offer anything unique in that regard.
Where Happierleads Falls Short
The biggest issue that appears with Happierleads is that their database is quite small, at just 180M contacts and 70M.
Best-in-class tools have contact databases in the billions.
They are an English company, so it's likely to be Europe or just UK-focused data.
In any case, the database is limited for teams past a certain size, though Happierleads appears to be targeting the SME market anyway.
For example, they don’t have any integrations and seem eager for you to use their own engagement platform rather than integrate with a point solution.
They’re missing the AI chat functionality to round out sales engagement.
Happierleads Pricing
Happierleads is relatively cost-effective, with pricing starting at $120 a month.
9. Factors AI

Factors is a solid website visitor-tracking software with some unique revenue attribution functionality.
Why Factors Is A Good Option
Factors is built for the marketing team.
You start out with optimizing ads and learning about the customer journey. Factors also offers some solid reporting and marketing campaign attribution.
Marketing intelligence and contact data come from Clearbit, so it’s best-in-class, and they also have some seriously good integrations (such as G2 and 6sense).
Where Factors Falls Short
Being focused on the marketing use case, Factors isn’t ideal for sales teams, which is why people have been looking for Factors AI alternatives.
For example, they don't have sales engagement functionality like email outreach.
Factors Pricing
Factors has a fairly usable free plan (actually free, not a trial), with more well-equipped paid options starting at $149 per month.
10. ZoomInfo

ZoomInfo is a beast in the account-based marketing space. Anonymous website visitor identification is just one arrow in their very stocked quiver.
Why ZoomInfo Is A Good Option
ZoomInfo is a full-stack GTM solution.
They’ve got visitor identification, intent data, marketing and sales ops features, and even a talent outreach and hiring suite.
The short answer to why ZoomInfo is a good option for visitor identification is this:
You’re already using ZoomInfo for something else.
Beyond that, it's not really a place to begin, and it’s certainly not suitable for startup sales plays or most small businesses.
Where ZoomInfo Falls Short
Aside from the fact that ZoomInfo is by far the most expensive tool on this list, a big drawback is that the buyer identification doesn’t actually tell you the exact person unless they’ve clicked a form or other link you’ve sent them.
Other solutions—Warmly, for instance—can help you identify exact site visitors without using previously-installed tracking code.
ZoomInfo Cost
ZoomInfo creates custom pricing packages, which is pretty much the standard for such large tools.
What we do know is that most companies are paying at least $40k to set up workflows in ZoomInfo, with many annual bills digging into six figures.
11. Albacross

Albacross is yet another European visitor recognition solution. It does well at that, but not a lot else.
Why Albacross Is A Good Option
Albacross is a very widely-used tool for capturing warm leads. Many of our own customers have come over from Albacross.
Their integrations are good on the CRM front (HubSpot, Salesforce, etc.), but they don’t connect with outreach tools, which is a challenge for sales teams.
They also have a unique LinkedIn ads integration, and partner with Bombora (like Warmly) to enhance visitor identification with buyer intent data.
Where Albacross Falls Short
The biggest complaint we hear about Albacross is that their filtering isn’t as good.
For example, when Inbox Pirates approached Warmly to solve visitor identification, they found that Albacross would tell them someone visited from a company like Apple when it simply wasn’t true.
Beyond that, reports are that their data isn’t as robust as other solutions, and the big issue is that there is no SDR layer with sales outreach functionality.
You can uncover who is on your website (with varying accuracy), but where do you go from there?
Albacross Pricing
Pricing for Albacross begins at €139 per month.
Related reading:
9 Best Lead Forensics Alternatives