The best Visitor identification & personalisation
Every option ranked — open-source, self-hostable, and commercial — by our transparent Sovereignty Score, with honest trade-offs so you choose what fits you, not us.
Working out which company is on your site and changing what they see. Built on proprietary IP-to-company data, which is precisely why nothing here can be self-hosted.
L5Applications — layer 5 of the AI stack- 1
RB2B
Top pickCommercialPerson-level identification for US traffic, with a genuinely free tier.
Free tier with a monthly identification allowance; paid plans above it. Checked 2026-08-01. · in our Clearbit (HubSpot Breeze Intelligence) comparison →
What is RB2B? →38sovereignty - 2
Plausible + your own enrichment
Open sourceThe honest self-hosted answer: analytics you own, identification you do not.
Free and open source to self-host. Plausible Cloud is paid from a small monthly fee. · in our Clearbit (HubSpot Breeze Intelligence) comparison →
What is Plausible + your own enrichment? →92sovereignty - 3
Dealfront (Leadfeeder)
CommercialThe European option, built around GDPR rather than apologising for it.
Free tier with limited identifications; paid plans from a low monthly fee. Checked 2026-08-01. · in our Clearbit (HubSpot Breeze Intelligence) comparison →
What is Dealfront (Leadfeeder)? →41sovereignty - 4
Algomo
CommercialPartnerIdentification plus what to do about it — personalisation and an AI SDR.
From about $200/month, no per-seat pricing. Checked 2026-08-01. · in our Clearbit (HubSpot Breeze Intelligence) comparison →
What is Algomo? →36sovereignty
Replacing a specific tool?
Head-to-head comparisons for each popular visitor identification & personalisation product.
Straight head-to-heads
Two visitor identification & personalisation tools, side by side — verified facts and a plain verdict.