Visibility in this ranking can be paid for. Payment moves a vendor's position within the
shortlist; it never adds a vendor, and it never changes a word of the review. The largest vendors in sales intelligence software
cannot hold places 1 to 3. Places 1 to 3 go to challengers, vendors outside the best-known brands in a category,
wherever the category has them; the established names follow from place 4 in their ranked order. How it works: placement disclosure ·
editorial process.
The 11 tools, reviewed
#1 Kaspr
Paris-built LinkedIn prospecting extension, owned by Cognism · France · kaspr.io
LinkedIn-first Chrome extension 500M+ phone numbers and emails (vendor claim) Part of the Cognism Group since 2022
Kaspr is registered in Paris as KASPR SAS and says it was born in France and now has hubs in the UK and Spain, and its Chrome extension is the fastest way on this list to pull a verified phone number or email directly off a LinkedIn profile.
- Pricing: Free + paid tiers. Free plan (15 B2B email, 5 phone and 5 direct-email credits a month, no exports). Free plan: free plan.
- Best for: Teams prospecting directly from LinkedIn who want a lightweight extension
- Strengths: LinkedIn Chrome extension for one-click enrichment; Contact and company database; Direct-dial phone numbers.
Where it falls short
Kaspr is not independent of Cognism, the UK-headquartered vendor ranked further down this list; a buyer treating the two as separate, competing options for jurisdiction-diversification purposes is working from an inaccurate premise, since a purchase from either ultimately reaches the same corporate group.
Wrong for
A buyer specifically seeking a French-owned, independently operated alternative to a UK or US vendor, since Kaspr's ownership sits with the UK-incorporated Cognism Group even though its product and team are French.
Visit Kaspr →
#2 Leadinfo
Dutch visitor identification linked to a 300M+ contact database · Netherlands · leadinfo.com
300M+ decision-maker database (vendor claim) ISO 27001 certified (vendor stated) Part of the teamblue SaaS group
Leadinfo is headquartered near Rotterdam in the Netherlands and operates as part of the teamblue group, and it pairs visitor identification with a 300 million-plus decision-maker database it states is linked to the companies it identifies, which is a broader data layer than some other visitor-ID-only tools on this list offer. The vendor states ISO 27001 certification, a named, checkable standard rather than only a general compliance claim.
- Pricing: Usage-based. Starter from €69/month billed annually for up to 50 identified companies (€99 for 51-100). Free plan: free trial.
- Best for: Teams wanting visitor ID plus a large linked decision-maker database
- Strengths: Website-visitor company identification; 300M+ linked decision-maker contact database; CRM and marketing automation integrations.
Where it falls short
Leadinfo's published price roughly doubles or more at higher identified-company volume, from €159 up to €539 a month on Scale and from €359 up to €889 on Pro, so the headline entry price understates what a busier site will actually pay.
Wrong for
A team with very high website traffic and a correspondingly high volume of companies to identify each month, since Leadinfo's usage-based pricing climbs substantially once volume moves past the lowest published band.
Visit Leadinfo →
#3 Vainu
Nordic-focused data platform, annual-contract pricing · Finland · vainu.com
Nordic-region specialist Annual contract, not monthly self-serve Founded 2013, Helsinki-headquartered
Vainu, founded in 2013 and headquartered in Helsinki with an additional Stockholm office, is built specifically around the Nordic region, Denmark, Finland, Norway and Sweden, rather than global coverage, which makes it a genuine specialist choice for a team whose prospecting is concentrated there.
- Pricing: Annual contract. Vainu for Prospecting from €3,500/year plus a €200 one-time onboarding fee. Free plan: free trial.
- Best for: Teams prospecting specifically into the Nordic region
- Strengths: Company and contact database, Nordic-focused; CRM-embedded prospecting; Company-monitoring alerts.
Where it falls short
Coverage outside the Nordic region is not the product's focus, and the sales process requires a 12-month auto-renewing contract with 60 days' notice to cancel, a real commitment compared with the month-to-month options several other vendors on this list publish.
Wrong for
A team prospecting primarily outside Denmark, Finland, Norway and Sweden, or one that wants a short-term or month-to-month commitment rather than a 12-month contract.
Visit Vainu →
#4 Lusha
525M+ verified contacts, dual US/Israel controller structure · United States · lusha.com
525M+ verified contacts (vendor claim) ISO 27701 and SOC 2 Type II stated Dual US/Israel controller structure
Lusha states 525 million-plus verified contacts and 29 million-plus companies on its own site, and backs that with named third-party certifications, ISO 27701 and SOC 2 Type II, alongside GDPR and CCPA compliance claims on its trust center, which is more independently checkable compliance detail than the quote-only vendors further down this ranking offer.
- Pricing: Free + paid tiers. Free plan with 40 credits a month. Free plan: free plan.
- Best for: Teams wanting a published, self-serve database with named certifications
- Strengths: Contact and company database search; Chrome extension and CRM integrations; Buyer intent data.
Where it falls short
Lusha's own privacy policy names two separate registered entities: Lusha Systems Inc., a Delaware corporation based in Boston, as primary controller, and Lusha Systems Ltd., an Israeli company, as a joint controller.
Wrong for
A buyer whose jurisdiction requirement needs a single, unambiguous controlling entity, since Lusha's own policy describes joint control split across two countries rather than one.
Visit Lusha →
#5 Leadfeeder
German-registered visitor identification, free-forever Lite plan · Germany · leadfeeder.com
Free-forever Lite plan German legal entity, US PE-backed Formed from 2022 Echobot/Leadfeeder merger
Leadfeeder is legally Dealfront Group GmbH, headquartered in Karlsruhe, Germany, with a Helsinki office, formed by the 2022 merger of Germany's Echobot and Finland's own original Leadfeeder; the brand rebranded from "Dealfront" back to "Leadfeeder" as its primary name in March 2026.
- Pricing: Free + paid tiers. Lite is free forever (unlimited users, up to 100 identified companies a month, 7-day visitor history). Free plan: free plan.
- Best for: Teams wanting to identify anonymous website visitors, starting free
- Strengths: Website-visitor company identification; Lead scoring and segmentation; CRM and marketing automation integrations.
Where it falls short
The free Lite plan stops at 100 identified companies a month with seven days of history, and verified emails, direct dials and AI prospect lists sit on Activate and above, from €369 a month.
Wrong for
A team that wants verified emails and direct dials on the cheapest paid plan, since Leadfeeder keeps contact data and AI prospect lists for Activate and above, and its outbound company search is an add-on to visitor identification rather than the core product.
Visit Leadfeeder →
#6 Overloop
Belgian data-plus-outreach platform, rebranded from Prospect.io · Belgium · overloop.com
Data plus AI-powered outreach in one 450M+-professional database (vendor claim) Belgian legal entity, USD-denominated pricing
Overloop, legally Overloop SRL and VAT-registered in Brussels, started in 2015 as a Chrome extension called Prospect.io, was later renamed Overloop and was acquired by Sortlist in 2024, giving it one of the longer operating histories among the EU-headquartered vendors on this list. Like Apollo.io, it combines a contact database with AI-powered outreach sequencing across email and LinkedIn in one subscription.
- Pricing: Per user / month. Starter $69/user/month (250 credits); Growth $99/user/month (500 credits); Enterprise custom-priced. A 7-day free trial is available. Free plan: free trial.
- Best for: Teams wanting a combined database and multichannel sequencing tool in one subscription
- Strengths: 450M+-professional contact database (self-reported); AI-powered email and LinkedIn sequencing; Credit-based prospecting system.
Where it falls short
Overloop prices its Starter and Growth plans in US dollars rather than euros despite being a Belgian company, which is unusual among the EU-headquartered vendors on this list and means the published figure moves with the exchange rate for a European buyer budgeting in euros.
Wrong for
A European buyer who specifically wants euro-denominated pricing, since Overloop's published plans are listed in US dollars, or a team whose prospecting volume will regularly exceed its tier's monthly credit cap.
Visit Overloop →
#7 SalesViewer
German visitor identification only, no outbound database · Germany · salesviewer.com
Visitor identification only, no contact database GDPR and CCPA certified 2018-2019 (vendor stated) No long-term contract required
SalesViewer is a materially different product from most of this list: it identifies which companies are anonymously visiting a customer's own website, and that is the entire product, with no searchable outbound contact database behind it at all, unlike Leadfeeder or Leadinfo, which pair visitor identification with a broader linked database.
- Pricing: Usage-based. Prices are excl. Free plan: free trial.
- Best for: Teams wanting anonymous website-visitor identification specifically, not outbound prospecting
- Strengths: Anonymous website-visitor company identification; Detection-volume-based tiers; Multi-website tracking on higher tiers.
Where it falls short
Because there is no searchable contact database behind it, SalesViewer cannot be used for outbound list-building at all, only for reacting to a company's own existing website traffic, which is a narrower job than every other vendor on this list, since Leadfeeder and Leadinfo both pair visitor identification with contact data.
Wrong for
Any team that needs to build a new outbound prospecting list from scratch, since SalesViewer only ever surfaces companies already visiting a website a customer already owns, and does not sell access to a searchable contact database at all.
Visit SalesViewer →
#8 ZoomInfo
The largest B2B contact database, quote-only · United States · zoominfo.com
Largest database in category Quote-only pricing US-incorporated
ZoomInfo's scale is the main reason to shortlist it: it is the largest, most established contact and company database among the vendors here, and that depth is what a buyer is actually paying for once a deal is quoted. Delaware-registered as ZoomInfo Technologies LLC and headquartered in Vancouver, Washington per its own privacy policy, it is squarely a US company for any buyer weighing jurisdiction.
- Pricing: Quote only. Pricing is not published on the vendor's site; every plan is quoted after a sales call. Free plan: none stated.
- Best for: Teams that want the deepest database and can commit to an enterprise sales process
- Strengths: Contact and company database search; Buyer intent signals; Org chart and technographic data.
Where it falls short
No pricing appears on the vendor's own site at any tier, so a buyer cannot size a likely deal without first going through a sales conversation, unlike several smaller vendors ranked above it on this list that publish real numbers.
Wrong for
A small team that wants to self-serve a plan and see a price before talking to anyone, or a buyer for whom US jurisdiction over contact records is a hard blocker.
Visit ZoomInfo →
#9 Apollo.io
Database plus built-in outreach, backed by Sequoia and YC · United States · apollo.io
Data plus outreach in one platform 40,000+ paying customers (vendor claim) Backed by Sequoia Capital and Y Combinator
Apollo.io's real differentiator on this list is combining a contact database with built-in sales engagement, email and call sequences, in one platform, which is a structural advantage over a pure-database competitor for a team that would otherwise buy two separate tools. Co-founded in 2015 by CEO Tim Zheng and CTO Ray Li with backing from Sequoia Capital and Y Combinator, the company states more than 40,000 paying customers.
- Pricing: Free + paid tiers. The vendor states a free Starter plan exists; paid-tier pricing is published on the vendor's own site but was not independently confirmed within this review's research budget. Free plan: free plan.
- Best for: Teams wanting prospecting data and sequencing in one subscription
- Strengths: Contact and company database; Built-in email and call sequencing; AI-assisted messaging.
Where it falls short
Apollo.io's headquarters is publicly reported as San Francisco, but that address could not be independently confirmed on the vendor's own published pages within this review, so it is listed here on a best-effort basis rather than as a vendor-confirmed fact.
Wrong for
A buyer who wants a pure specialist database without a bundled outreach product they may not use, or one who needs the vendor's registered corporate address independently confirmed before signing.
Visit Apollo.io →
#10 Cognism
UK-headquartered data company focused on European growth · United Kingdom · cognism.com
UK-headquartered Focused on European growth Quote-only pricing
Cognism is the one clearly major vendor on this list that is not US-incorporated: its stated headquarters is The Shard in London, with further offices in Boston, Cologne, Paris, Skopje and Zadar, and it explicitly frames itself as built for growth in Europe rather than as a US company with a European sales office bolted on.
- Pricing: Quote only. Pricing is not published on the vendor's site; the Standard and Pro plans, each with 5 seats included, are quoted after a sales call. Free plan: none.
- Best for: European revenue teams wanting a non-US-incorporated database vendor
- Strengths: Contact and company database search; Intent and signal-based prospecting; Vendor-verified phone data.
Where it falls short
Like ZoomInfo, Cognism publishes no pricing at all, so a buyer cannot compare a likely cost against the EU-headquartered alternatives ranked above it on this list without first going through a sales call.
Wrong for
A buyer with a strict EU-only (not merely European) jurisdiction requirement, since Cognism's registered headquarters sits in the UK, or a buyer that wants published self-serve pricing rather than a sales conversation.
Visit Cognism →
#11 Clearbit
Enrichment and intent signals, now Clearbit by HubSpot · United States · clearbit.com
Now part of HubSpot Real-time lead scoring and routing IP-based buying-intent signals
Clearbit's own homepage now announces "Clearbit has joined HubSpot," and the product operates as Clearbit by HubSpot rather than as an independent company, which makes HubSpot's Cambridge, Massachusetts headquarters the relevant publisher of record.
- Pricing: Not stated. Not stated by the vendor within the facts verified for this review; the product is sold as part of the HubSpot ecosystem. Free plan: not stated.
- Best for: Teams already running HubSpot who want enrichment and lead scoring in the same ecosystem
- Strengths: Lead and account enrichment; Real-time lead scoring and routing; Buying-intent signals via IP intelligence.
Where it falls short
As an acquired product folded into HubSpot, Clearbit's independent pricing and roadmap are no longer separable from HubSpot's own; a buyer not already on or planning to adopt HubSpot gets less of a standalone value proposition than from a dedicated database vendor.
Wrong for
A team that wants a standalone prospecting database independent of any CRM ecosystem, since Clearbit's value is now most concentrated for teams already inside HubSpot.
Visit Clearbit →
Questions and answers
What is the best sales intelligence software in 2026?
Kaspr ranks first of 11, best for teams prospecting directly from LinkedIn who want a lightweight extension. Leadinfo is second (teams wanting visitor ID plus a large linked decision-maker database) and Vainu third (teams prospecting specifically into the Nordic region). Places 1 to 3 go to challengers, vendors outside the best-known brands, wherever the category has them.
Which of these vendors are genuinely EU-headquartered?
Five: Leadfeeder (legal entity Dealfront Group GmbH, Karlsruhe, Germany), Leadinfo (Rotterdam area, Netherlands), Vainu (Helsinki, Finland), Overloop (Brussels, Belgium) and SalesViewer (Bochum, Germany).
Does EU headquarters matter for a buyer worried about GDPR?
Less than buyers often assume. GDPR applies to any vendor processing personal data of people in the EU, wherever the vendor is incorporated, and it allows processing by non-EU vendors under the right safeguards, such as standard contractual clauses.
Is Kaspr owned by Cognism?
Yes. Kaspr's own materials state that it is part of the Cognism Group, which it joined in 2022, and the two are now sold as a combined offering under the Cognism umbrella.
What's the difference between a contact database, a visitor-identification tool and a combined data-plus-outreach platform?
A contact database, ZoomInfo, Lusha, Cognism, Kaspr and Vainu on this list, is searched and filtered to build an outbound prospecting list from scratch.
Is there a free sales intelligence tool on this list?
Leadfeeder's Lite plan is free forever, with unlimited users and up to 100 identified companies a month and seven days of visitor history, though it is a website-visitor-identification tool rather than a searchable outbound database.
Which of these tools only covers the Nordic region?
Vainu.
Why is Overloop priced in US dollars despite being a Belgian company?
Overloop is legally Overloop SRL, registered in Brussels, but its published Starter and Growth plans are listed in US dollars per user per month rather than euros, which is unusual among the EU-headquartered vendors on this list and worth flagging to a European buyer budgeting in euros, since the dollar figure will move with the exchange rate in a way a euro-denominated competitor's price will not.
Is there a fee to be listed in this ranking?
Visibility in this ranking can be paid for. Payment can move a vendor's position within the shortlist; it never adds a vendor that doesn't belong here and never changes a word of a review.
How often is this ranking updated?
Whenever a fact underneath it changes: a pricing update, an acquisition, a certification gained or lost, or a product that stops being maintained.
Does Lusha operate under EU or US jurisdiction?
Both, in a structure most vendors on this list don't share.
Which of these tools combine prospecting data with outreach sequencing?
Apollo.io and Overloop are the two vendors on this list built around a contact database plus email or LinkedIn sequencing in one subscription.
