The short answer
The best B2B website visitor identification software is the one that identifies the most useful companies in your own traffic, in the countries your visitors come from, and sends them straight into the tools your team already uses. You cannot judge that from a demo or a feature list. Run a two-week trial on your own website and count the companies that match your ideal customer.
Five things decide whether a tool is worth paying for: how many data sources it uses, where it can name people, how its data reaches your team, how it is priced, and how easy it is to leave.
What features should you look for?
These are the features that change results. Most others are nice to have.
- Several data sources. Each identification provider recognises a different set of company networks, so a tool that checks several providers at once will usually recognise more of your traffic than one that relies on a single source.
- The right level for your regions. For UK and European visitors, tools show the company. For US visitors, some tools also name the person. Many person-level tools, including RB2B and Warm AI, only name people for US visitors.
- Page-by-page activity. You need to see which pages a company read and how often it came back. A visit to your pricing page means more than a visit to a blog post.
- Real-time alerts. An alert in Slack or email when a target account is on your site lets sales act while interest is fresh.
- Native integrations. Check the tool connects directly to your CRM and your outreach tools. Identification only helps if the data reaches the people who follow up.
- Filters for your ideal customer. You should be able to hide internet providers, small companies and industries you do not sell to, so the list your team sees is short and relevant.
How accurate is website visitor identification?
No tool identifies every visitor, and any vendor that quotes one match rate for every website is overselling. How many visitors a tool can identify depends on your traffic.
Most company identification works by matching the visitor's IP address to a known business. That works well when someone browses from an office network. It works less well when they browse from home broadband, mobile data or some VPNs, because the IP address then belongs to the internet provider rather than their employer. Those visits often stay anonymous, or show up as the internet provider's name.
The limitations to plan for
- Remote and mobile visitors are harder to match to a company.
- Bots and your own staff inflate your traffic and make match rates look lower than they are. Exclude both before you measure.
- Shared offices and large networks can show the building owner or network operator instead of the company.
- Person-level data is limited by law and geography. Outside the US, many tools show the company only.
How to get a higher match rate
- Install the tracking code in the
<head>of every page, including landing pages and subdomains. - If your site loads pages without a full refresh, check the code records every page view.
- Exclude your own office and staff traffic.
- Check your cookie banner set-up. If the tracker only runs after a visitor accepts cookies, every visitor who declines is invisible to it.
- Choose a tool that checks several data sources, so a visit one provider misses can still be caught by another.
For more detail, see what counts as a good match rate.
How is visitor identification software priced?
There are four common pricing models. Ask which one a vendor uses before you look at the number.
| Pricing model | What you pay for | Example (from each vendor's pricing page, 8 October 2026) |
|---|---|---|
| Per company identified | The number of unique companies identified each month | Warm AI from £89 a month for 50 IDs, where a named US person uses 2. Snitcher advertises plans from $49 a month for up to 50 companies |
| Per identification | A set number of identifications each month | RB2B has a free plan with 150 a month at company level, and paid plans from $79 a month |
| By website traffic | A quote based on how many visitors your site gets | Lead Forensics does not publish prices and quotes on your traffic |
| Platform licence | An annual or quarterly fee for a wider platform | Warmly's visitor identification plan starts at $10,000 a year |
Per-company pricing is the easiest to predict, because you only pay for companies you actually see. Also check the contract. Monthly plans let you judge a tool on results. Annual contracts that renew automatically need a note in your calendar well before the notice deadline.
Does the tool suit a small team?
Some platforms bundle visitor identification with website chat, ad audiences and account-based marketing. Those suit larger teams with someone to run them. If you have a small sales team, a tool that identifies visitors well and sends them to the CRM, Slack or outreach tool you already use is more likely to get used every day.
A good test: in the trial, can someone in sales find a useful company and act on it within five minutes, without training?
How to run a fair two-week trial
- Install the tracking code on every page on day one.
- Exclude your own staff and office traffic.
- Let it run for at least 14 days, so you see a normal mix of weekdays and weekends.
- If you are comparing two tools, run both at the same time on the same traffic. Comparing different weeks is not a fair test.
- Count companies that fit your ideal customer. Ignore the total. Fifty identified companies you would sell to are worth more than five hundred you would not.
- Check the data reaches your team. Connect your CRM, alerts or outreach tool during the trial, not after you have paid.
- Price it at your real volume. Work out what you would pay each month for the number of companies you actually saw.
Questions to ask every vendor
| Question | Why it matters | Warm AI's answer |
|---|---|---|
| How many data sources do you use? | More sources usually means more of your traffic recognised | Several, including Snitcher and RB2B, plus 7 more |
| Where do you name people, and where only companies? | Sets what you will see for each region | People for US visitors, with LinkedIn and email. Companies for UK and EU visitors |
| What exactly am I paying for? | Traffic-based and per-company pricing behave very differently | Companies identified each month, from £89 a month |
| Monthly or annual? How do I cancel? | Decides how easy it is to leave | Monthly or annual, no long-term contract, cancel any time |
| Which tools do you connect to natively? | Data has to reach your team to be useful | HubSpot, Slack, email alerts, HeyReach, Valley and CSV |
| Can I see my own data during the trial? | You need real results before you pay | Yes, 14-day trial with no card needed |
| Do you provide a data processing agreement? | Needed for UK GDPR and GDPR | Yes, on request |
| What happens if I go over my plan? | Avoids surprise bills | We ask you before any overage is charged |
If you are comparing specific products, see our comparison of the leading tools, our Lead Forensics alternatives and our guide to GDPR-compliant visitor identification.
Frequently asked questions
What features should I look for in a B2B visitor identification tool?
Several data sources, person-level data where your visitors are, page-by-page activity, real-time alerts, native CRM and outreach integrations, and filters that hide companies you would never sell to.
How accurate is website visitor identification?
It depends on your traffic. Visits from office networks are usually easier to match than visits from home broadband or mobile data. The only reliable figure is the one you measure in a trial on your own website.
How can I improve my visitor identification match rate?
Install the code on every page, exclude staff traffic, check your cookie banner does not hide visitors who decline, and use a tool that checks several data sources.
Can visitor identification tools name the actual person?
Some can, mainly for US visitors. In the UK and Europe, many tools, including Warm AI, show the company rather than the person.
How much does visitor identification software cost?
Some tools have free plans. Paid plans priced by companies identified start from about $49 a month (Snitcher) or £89 a month (Warm AI). Platform tools such as Warmly start at $10,000 a year. Some vendors only quote after a demo.
Is a free trial enough to judge a tool?
Yes, if you run it properly: two weeks, installed on every page, staff traffic excluded, and judged on companies that fit your ideal customer rather than the total number identified.
Start your 14-day free trial. No card needed.