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We've been building B2B data enrichment tools for years. At FullEnrich, we've tested pretty much every data provider on the market because we had to.
Our waterfall enrichment platform queries 15+ premium data sources, so we know exactly how each one performs.
We've also worked with hundreds of sales teams to help them with their prospecting and data enrichment workflows.
In this post, we're breaking down 23 b2b data vendors (across different categories) so you can pick what's best for your specific needs.
We'll also include an "ease of use" score for each tool (beginner, intermediate, or advanced) to help you choose tools that match your skill level.
What is a B2B data provider?
A B2B data provider (also called a b2b data vendor) is a company that collects, processes, and sells contact and company information to other businesses. This data helps with sales prospecting, marketing campaigns, analytics, and strategic planning.
These tools all do different things. Some help you find email addresses and phone numbers, some help you analyze competitors' contact databases, some provide intent data showing which companies are actively researching solutions, and some help you enrich your CRM with firmographic and technographic data.
Some of the tools we'll go over aim to do all the things we just mentioned, while some only do one specific thing very well. Overall, we've used every single tool on this list and have written a comprehensive review of all of them below.
23 best B2B data providers we've personally tested in 2025
Here are the best b2b data providers right now:
FullEnrich (best for maximum data coverage via waterfall)
Clay (best for programmable data workflows)
ZoomInfo (best for enterprise US sales intelligence)
Apollo.io (best for budget-friendly all-in-one sales)
Cognism (best for GDPR compliance + phone-verified data)
Lusha (best for Chrome extension lookups)
Kaspr (best for European LinkedIn prospecting)
Dealfront (best for European market intelligence)
6sense (best for predictive ABM + intent data)
Bombora (best for buyer intent signals)
Demandbase (best for account-based advertising)
Hunter.io (best for email finding + verification)
Clearbit (best for HubSpot data enrichment)
Lead411 (best for trigger-based prospecting)
RocketReach (best for personal contact info)
UpLead (best for guaranteed email accuracy)
Seamless.AI (best for AI-powered lead generation)
Adapt.io (best for technographic data)
Datanyze (best for technology tracking)
LeadIQ (best for Salesforce workflows)
Crunchbase (best for startup + funding data)
D&B Hoovers (best for firmographic + financial data)
SalesIntel (best for human-verified data)
Let's go over each one in depth.
1. FullEnrich (best for maximum data coverage via waterfall)

Category: Waterfall enrichment
Best for: Maximum data coverage across multiple sources
Ease of use: Beginner
Pricing: Free plan, paid starts at $29/month
Yes, this is us. But we built FullEnrich to solve a real problem we kept hitting: single-source b2b data providers have 20-40% coverage at best. If Apollo doesn't have an email, you're stuck. If Lusha misses a phone number, you move on empty-handed.
We got tired of that, so we built something better.
How FullEnrich works
FullEnrich is a waterfall enrichment platform. We query 20+ premium data sources in sequence until we find verified contact information. The platform uses triple email verification including specialized checks for catch-all emails that most providers can't validate. Our customers report bounce rates consistently under 2%.

What really sets us apart is geographic routing. Our waterfall intelligently selects providers based on region. Different data sources excel in different markets, and we automatically pick the best one for each contact.
👉 Try FullEnrich with 50 free credits today
Who is FullEnrich for?
RevOps and SalesOps leaders who need maximum data accuracy, flexible pricing, and GDPR-compliant enrichment without paying enterprise contract rates.
Pricing plans

Free: 50 enrichment credits
Start: $29/month (500 credits)
Pro: $55/month (1000 credits)
Scale: $500/month (Custom credits)
Credits roll over for up to 3 months, and you get unlimited seats on every plan.
👉 Try FullEnrich with 50 free credits today
Pros and cons
Pros | Cons |
|---|---|
85%+ match rates across industries | We're enrichment only not a sales suite |
Triple-verified emails reduce bounces | |
Transparent, usage-based pricing with rollover | |
GDPR/CCPA compliant with audit-ready processes | |
Unlimited seats on every plan |
FullEnrich rating and reviews
G2: 4.8 out of 5 stars (see reviews)
Product Hunt: Featured product
👉 Try FullEnrich with 50 free credits today
2. Clay (best for programmable data workflows)

Category: Waterfall enrichment + automation
Best for: Programmable data workflows
Ease of use: Intermediate to advanced
Pricing: Free plan, paid starts at $149/month
Clay is one of the hottest tools in the sales tech space right now, and for good reason. Founded in 2017, Clay has raised over $60M in funding and counts companies like Notion, Ramp, and Anthropic as customers.
What makes Clay different from traditional b2b data providers is the philosophy. Instead of giving you a static database to search, Clay lets you build automated workflows that pull from 50+ data providers and enrich leads exactly how you want. Think of it as Zapier meets Airtable meets every data provider, all in one interface.
How Clay works

Clay reimagines the spreadsheet as a programmable data engine. You can connect to 50+ data providers (Clearbit, Apollo, Hunter, LinkedIn, OpenAI) and build automated enrichment workflows with conditional logic. The Claygent AI agent researches companies on your behalf by browsing the web, then reports back with qualifying information.
Who is Clay for?
Technical growth teams with "engineering DNA" who want to build custom data workflows rather than just buy lists. It's particularly powerful for agencies managing multiple clients with different enrichment needs.
Pricing plans

Free: $0/month with limited credits
Starter: $149/month
Explorer: $349/month
Pro: $800/month
Pros and cons
Pros | Cons |
|---|---|
50+ data provider integrations | Steeper learning curve than simpler tools |
AI agent for automated research | Can get expensive at scale |
Powerful workflow automation | Requires "building" vs just "buying" lists |
Best-in-class UI/UX | Entry pricing tough for solo operators |
Clay rating and reviews
G2: 4.9 out of 5 stars (see reviews)
Product Hunt: #1 Product of the Day
3. ZoomInfo (best for enterprise US sales intelligence)

Category: Enterprise sales intelligence
Best for: Comprehensive US B2B data + full GTM platform
Ease of use: Beginner to advanced
Pricing: Custom pricing, typically $15,000-$30,000/year
If you've spent any time in B2B sales, you've heard of ZoomInfo. It's the 800-pound gorilla of the b2b data provider market, a publicly traded company with over $1.2 billion in annual revenue and 260M+ contacts in their database.
ZoomInfo has been on an acquisition spree: Chorus.ai for conversation intelligence, Datanyze for technographics, and several other companies to build what they call their "Revenue Operating System."
How ZoomInfo works

ZoomInfo isn't just a contact database anymore. It's a full platform with SalesOS, MarketingOS, TalentOS, and OperationsOS. The platform includes buyer intent data, technographics, website visitor tracking, and conversation intelligence. You can upload existing contact lists for enrichment, build new lists using 200+ search filters, or use the Chrome extension while browsing LinkedIn.
Who is ZoomInfo for?
Enterprise sales and marketing teams with significant budgets ($15K-$100K+/year). If you're a startup or SMB on a tight budget, ZoomInfo is probably overkill. Apollo.io gives you 80% of the functionality at 10% of the price.
Pricing plans

ZoomInfo doesn't publish pricing. Based on market feedback:
Professional: ~$15,000-$25,000/year
Advanced: ~$25,000-$50,000/year
Elite: $50,000-$100,000+/year
Annual contracts only. Watch out for aggressive auto-renewal clauses.
Pros and cons
Pros | Cons |
|---|---|
260M+ contacts, 100M+ companies | Very expensive ($15K-$100K+/year) |
Comprehensive GTM platform | Opaque pricing requires sales calls |
Best-in-class North American coverage | European and APAC data notably weaker |
Intent data, technographics built in | Aggressive contract auto-renewals |
ZoomInfo rating and reviews
G2: 4.5 out of 5 stars (see reviews)
Capterra: 4.1 out of 5 stars
4. Apollo.io (best for budget-friendly all-in-one sales)

Category: All-in-one sales platform
Best for: Budget-friendly prospecting + engagement
Ease of use: Beginner to intermediate
Pricing: Free plan available, paid starts at $49/month
Apollo.io has done something remarkable: they've essentially commoditized the b2b data market. What ZoomInfo charges $15K+/year for, Apollo offers at $49/month with a genuinely useful free tier on top.
Founded in 2015, Apollo has grown to 275M+ contacts and over 2 million users. We integrate Apollo as one of our waterfall data sources, so we see their data quality firsthand. For US contacts, it's solid, not quite ZoomInfo quality, but remarkably good for the price.
How Apollo.io works

Apollo is an end-to-end sales platform built around a massive contact database. You get 275M+ contacts with 30+ data points each, built-in sequences for automated email outreach, an integrated dialer, Chrome extension, buyer intent data, and analytics. The free tier gives you 10,000 email credits per year for $0.
Who is Apollo.io for?
Startups who need sales intelligence but can't afford ZoomInfo. SMBs wanting an all-in-one solution. Individual SDRs who need to prospect independently. Agencies managing outreach for multiple clients.
Pricing plans

Free: $0/month with 10,000 email credits/year
Basic: $49/user/month
Professional: $79/user/month
Organization: $119/user/month
Pros and cons
Pros | Cons |
|---|---|
Genuinely useful free tier (10K credits/year) | Data accuracy around 60-70% |
275M+ contacts in database | Has had data breaches in past |
All-in-one: data + sequences + dialer | International data needs improvement |
Affordable paid plans | Can feel overwhelming with features |
Apollo.io rating and reviews
G2: 4.8 out of 5 stars (see reviews)
Capterra: 4.6 out of 5 stars
5. Cognism (best for GDPR compliance and europe data)

Category: Enterprise sales intelligence
Best for: GDPR compliance + phone-verified mobile data
Ease of use: Intermediate
Pricing: Custom, typically $15,000/year+
Cognism is what happens when you build a b2b data provider with European compliance as the foundation, not an afterthought. Founded in London in 2015, Cognism has become the go-to choice for companies who need GDPR-compliant data and strong European coverage.
What really sets Cognism apart is Diamond Data, their phone-verified mobile numbers. Unlike most providers who pattern-match or algorithmically guess phone numbers, Cognism employs a team that actually calls to verify mobiles are correct and reachable.
How Cognism works
Cognism combines a large contact database with compliance-first features: Diamond Data phone-verified mobiles, 400M+ business profiles, intent data via Bombora partnership, DNC checking against 13+ global Do Not Call lists, and compliance workflows ensuring GDPR/CCPA alignment.
Who is Cognism for?
Companies selling into Europe who need GDPR-compliant data. Regulated industries (finance, healthcare) where compliance is mandatory. Phone-heavy sales teams who need verified mobile numbers.
Pricing plans
Custom pricing based on team size:
Small teams (5-10 users): ~$15,000/year
Mid-market (20-50 users): ~$15,000-$25,000/year
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
Phone-verified mobiles (Diamond Data) | Higher cost ($15K+/year minimum) |
13+ DNC list checks globally | Custom quotes only |
Strong EMEA coverage (98% accuracy) | US data not as strong as ZoomInfo |
Bombora intent integration included | Requires annual contracts |
Cognism rating and reviews
G2: 4.6 out of 5 stars (see reviews)
Capterra: 4.6 out of 5 stars
6. Lusha (best for Chrome extension lookups)

Category: Chrome extension + contact database
Best for: Quick LinkedIn lookups
Ease of use: Beginner
Pricing: Free plan, paid starts at $29/month
Lusha is the simple, fast option in a world of increasingly complex sales tools. Founded in Israel in 2016, the company has grown to 800,000+ users by doing one thing really well: instant contact lookups while you browse LinkedIn.
We've tested pretty much every Chrome extension for contact finding, and Lusha's is the snappiest. Click the extension, get the email and phone, move on.
How Lusha works

Install the Chrome extension, browse LinkedIn or any website, click the Lusha icon, get email and phone number instantly. Beyond the extension, Lusha now offers a prospecting platform for building targeted lists, intent signals, job change alerts, and CRM integrations.
Who is Lusha for?
Individual SDRs who need quick lookups without complexity. Small sales teams (2-5 people) with light enrichment needs. Recruiters sourcing candidates on LinkedIn.
Pricing plans
Free: 5 credits/month
Pro: $29/month for 40 credits
Premium: $51/month for 80 credits
Scale: $79/month
Credits don't roll over month-to-month.
Pros and cons
Pros | Cons |
|---|---|
Snappiest Chrome extension on market | Lower data accuracy (60-70% match rate) |
Works on any website | Limited EU/global coverage |
Zero learning curve | Credit caps restrict high-volume users |
Free plan to test | Shallow enrichment beyond basic details |
Lusha rating and reviews
G2: 4.3 out of 5 stars (see reviews)
Capterra: 4.0 out of 5 stars
7. Kaspr (best for European LinkedIn prospecting)

Category: Chrome extension + European data
Best for: GDPR-compliant European LinkedIn prospecting
Ease of use: Beginner
Pricing: Free plan, paid starts at €30/month
Kaspr is essentially "Lusha for Europe" but with one crucial difference: unlimited email search on paid plans instead of restrictive credit caps.
Founded in France in 2018, Kaspr was acquired by Cognism in 2022. This acquisition gave Kaspr access to Cognism's European data infrastructure while maintaining its focus on simplicity and LinkedIn-based prospecting.
How Kaspr works

Install the extension, browse LinkedIn or Sales Navigator, click to reveal contact details, export to CRM or CSV. What sets Kaspr apart: 120M+ European contacts with strong GDPR compliance, unlimited email lookups on paid plans, and LinkedIn automation features.
Who is Kaspr for?
European-focused SDRs who need compliant data. Recruiters sourcing across EMEA. SMBs who want Cognism-quality data without enterprise pricing. Email-first teams who need unlimited lookups.
Pricing plans
Starter: €30/month (unlimited emails, 100 phone credits)
Business: €55/month (unlimited emails, 200 phone credits)
Organization: €85/month (team features)
Pros and cons
Pros | Cons |
|---|---|
Unlimited email search on paid plans | Phone credits still limited |
120M+ European contacts | Smaller database than ZoomInfo/Apollo |
GDPR-compliant by design | US data not as strong |
Owned by Cognism | LinkedIn-dependent |
Kaspr rating and reviews
G2: 4.4 out of 5 stars (see reviews)
8. Dealfront (best for European market intelligence)
Category: European market intelligence
Best for: European company data + website visitor ID
Ease of use: Intermediate
Pricing: Custom pricing
Dealfront is what you get when two European B2B data companies (Echobot and Leadfeeder) merge to take on the American giants. The 2023 combination created the most comprehensive European-focused sales intelligence platform on the market.
What makes Dealfront unique is the data sourcing. While most b2b data providers scrape the web and buy third-party lists, Dealfront pulls directly from official sources: national trade registers, commercial registers, and government databases across Europe.
How Dealfront works
Dealfront combines company database (40M+ European companies), contact data (180M+ contacts), website visitor identification (Leadfeeder functionality), trigger events, and CRM integrations. The trade register data is particularly valuable for accurate European company information.
Who is Dealfront for?
Companies selling into Europe (especially DACH region). B2B businesses requiring compliant data for EU operations. Marketing teams wanting website visitor intelligence.
Pricing plans
Modular pricing based on which products you need. Contact sales for quotes. Typically €10,000-€50,000/year depending on modules and team size.
Pros and cons
Pros | Cons |
|---|---|
Deep European trade register data | US coverage significantly weaker |
Website visitor identification | Modular pricing can get complex |
ISO 27001 and ISO 27701 certified | Requires talking to sales |
Strong DACH coverage | Some features feel stitched together |
Dealfront rating and reviews
G2: 4.3 out of 5 stars (see reviews)
9. 6sense (best for predictive ABM + intent data)

Category: Predictive ABM + intent data
Best for: Enterprise account-based marketing
Ease of use: Advanced
Pricing: Custom, typically $60,000-$150,000+/year
6sense represents the cutting edge of B2B data, moving beyond static contact databases to AI-powered predictions about who's going to buy. The company has raised over $400M in funding and counts enterprise giants like Salesforce, Dell, and Zendesk as customers.
The core philosophy is compelling: 97% of B2B buying research happens before a vendor is ever contacted. 6sense calls this the "Dark Funnel" and uses AI to predict which accounts are in-market and ready for outreach.
How 6sense works
6sense combines predictive AI that scores accounts based on buying likelihood, intent data tracking research behavior across the web, "Dark Funnel" visibility identifying anonymous visitors, buying stage identification, contact data via Slintel acquisition, and ABM advertising.
Who is 6sense for?
Enterprise B2B companies with six-figure marketing budgets. ABM-focused organizations running sophisticated programs. Companies with long, complex sales cycles where early identification matters.
Pricing plans
Enterprise-only, entirely custom:
Mid-market: ~$60,000-$80,000/year
Enterprise: $100,000-$150,000+/year
Large enterprise with advertising: $200,000+/year
Pros and cons
Pros | Cons |
|---|---|
AI-powered buyer predictions work | Very expensive ($60K-$150K+/year) |
"Dark Funnel" visibility is unique | Enterprise-only |
Slintel contact data integration | Complex implementation (2-3 months) |
Predictive account scoring | Can feel like a black box |
6sense rating and reviews
G2: 4.3 out of 5 stars (see reviews)
Capterra: 4.4 out of 5 stars
10. Bombora (best for buyer intent signals)

Category: Intent data
Best for: Buyer intent signals
Ease of use: Intermediate
Pricing: Custom, typically $20,000-$50,000+/year
Bombora owns the concept of "Company Surge," the idea that you can identify when businesses are actively researching topics related to your product by tracking content consumption patterns. It's the gold standard for B2B intent data.
Founded in 2014, Bombora built something unique: a data cooperative of 5,000+ B2B publishers who share anonymized content consumption data.
How Bombora works
5,000+ B2B publishers share anonymized consumption data. Bombora tracks what topics each company normally reads. When consumption spikes above baseline, it's flagged as intent. 12,000+ topics categorized for precise targeting. Intent data pushed to your CRM, MAP, or sales tools.
Who is Bombora for?
Enterprise ABM programs that need intent signals. Marketing teams prioritizing accounts for campaigns. Any B2B organization with budget for premium intent data. Note: Bombora is intent data only, no contact information included.
Pricing plans
Direct from Bombora: ~$20,000-$50,000+/year
Via partners: Often bundled with platforms like HubSpot, Cognism, or Lead411
Pros and cons
Pros | Cons |
|---|---|
Gold standard for B2B intent accuracy | Intent data only, no contacts |
5,000+ publisher cooperative | Expensive ($20K-$50K+/year) |
GDPR-friendly consent-based collection | Requires pairing with contact provider |
12,000+ topic taxonomy | Can generate too many "surging" accounts |
Bombora rating and reviews
G2: 4.4 out of 5 stars (see reviews)
11. Demandbase (best for account-based advertising)
Category: ABM advertising + intent data
Best for: Account-based advertising at scale
Ease of use: Advanced
Pricing: Custom, typically $50,000-$200,000+/year
Demandbase is 6sense's primary rival in the ABM platform wars. While 6sense emphasizes predictive AI, Demandbase has traditionally led with account-based advertising, the ability to serve targeted display ads to specific companies, not just demographics.
The company has been on an acquisition spree: InsideView for sales intelligence, DemandMatrix for technographics, and Engagio for account-based orchestration.
How Demandbase works
Demandbase combines ABM analytics, a B2B-specific advertising DSP for account-targeted display ads, website personalization, sales intelligence via InsideView, and orchestration workflows based on account signals.
Who is Demandbase for?
Enterprise B2B marketers running ABM advertising. Marketing teams needing account-level targeting at scale. Organizations wanting integrated advertising + intent + sales intelligence.
Pricing plans
Enterprise pricing, entirely custom:
Mid-market: ~$50,000-$60,000/year
Enterprise: ~$100,000-$150,000/year
Full platform with advertising: $200,000+/year
Pros and cons
Pros | Cons |
|---|---|
B2B-specific advertising DSP | Very expensive ($50K-$200K+/year) |
Strong account intelligence | Complex implementation |
Comprehensive ABM platform | No comprehensive contact data |
Deep CRM integrations | Advertising requires separate budget |
Demandbase rating and reviews
G2: 4.3 out of 5 stars (see reviews)
12. Hunter.io (best for email finding + verification)
Category: Email finding + verification
Best for: Finding and verifying email addresses
Ease of use: Beginner
Pricing: Free plan, paid starts at $49/month
Hunter.io is the specialist's choice for email, nothing more, nothing less. While other tools try to do everything, Hunter focuses exclusively on finding and verifying business email addresses.
Founded in France in 2015, Hunter has grown to 4M+ users by being really good at one thing. We use Hunter as one of our waterfall sources specifically for email finding.
How Hunter.io works
Domain Search: Enter a company domain, get all publicly available emails. Email Finder: Enter a name and company, get the likely email address. Email Verifier: Check if an email is deliverable before sending. The Chrome extension lets you find emails while browsing LinkedIn or any company website.
Who is Hunter.io for?
Email-first outreach teams who don't need phone data. Marketers building email campaigns. Technical users who want API access for automation. Budget-conscious teams needing just email verification.
Pricing plans
Free: 25 searches/month + 50 verifications
Starter: $49/month (500 searches)
Growth: $149/month (5,000 searches)
Business: $499/month (50,000 searches)
Pros and cons
Pros | Cons |
|---|---|
Best-in-class email finding (80-85% accuracy) | Email only, no phone numbers |
Email verification prevents bounces | No firmographic or intent data |
Simple, focused product | Less useful for small companies |
Generous free tier | No direct LinkedIn integration |
Hunter.io rating and reviews
G2: 4.4 out of 5 stars (see reviews)
Capterra: 4.6 out of 5 stars
13. Clearbit (Breeze Intelligence) : best for HubSpot data enrichment
Category: Data enrichment
Best for: HubSpot real-time enrichment
Ease of use: Beginner to intermediate
Pricing: Custom pricing (HubSpot-native)
Clearbit was the darling of the data enrichment world for years, the tool that growth teams at companies like Segment, Notion, and Intercom used. Then HubSpot acquired them in 2023 and rebranded as "Breeze Intelligence."
The core strength is real-time enrichment. Give Clearbit an email address, and it returns 85+ data points about the person and company instantly.
How Clearbit works
Now integrated into HubSpot, the product enriches CRM records automatically, provides buyer intent signals, shortens forms to improve conversion, and enables lead scoring based on fit. Note: This is no longer a standalone product outside HubSpot.
Who is Clearbit for?
HubSpot users who want native enrichment. Growth teams building automated lead processing. Marketing ops professionals implementing lead scoring. Note: Not suited for non-HubSpot users.
Pricing plans
Available only as part of HubSpot packages. No standalone pricing.
Pros and cons
Pros | Cons |
|---|---|
Excellent real-time enrichment quality | No standalone product outside HubSpot |
85+ data attributes per record | No verified contacts or direct dials |
Easy to set up inside HubSpot | Limited beyond basic company data |
Useful for firmographic enrichment | Not a true Apollo competitor anymore |
Clearbit rating and reviews
G2: 4.4 out of 5 stars (see reviews)
Capterra: 4.5 out of 5 stars
14. Lead411 (best for trigger-based prospecting)
Category: All-in-one sales platform
Best for: Trigger-based prospecting + intent data
Ease of use: Beginner to intermediate
Pricing: Starts at $75/month
Lead411 is the unglamorous workhorse of B2B data, no flashy AI, just solid contact data with killer differentiators: unlimited exports and Bombora intent data included on Pro plans.
The trigger data tracks real-time events like funding rounds, leadership changes, new hires, and office expansions. These triggers help you time outreach when prospects are most likely to buy.
How Lead411 works
Contact database with triple-verified emails and direct dials. Company intelligence with firmographic data. Trigger alerts for funding, hiring, and leadership changes. Intent data powered by Bombora on Pro plans. CRM integrations with Salesforce, HubSpot, Zoho, Pipedrive.
Who is Lead411 for?
Mid-market sales teams that need verified contact data and intent signals. Trigger-based sellers timing outreach to events. Organizations needing intent data without Bombora's price tag.
Pricing plans
Basic: $75/month (1,000 exports)
Pro: $150/month (2,000 exports, includes Bombora intent)
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
Triple-verified emails (95%+ accuracy) | Database not as vast as ZoomInfo |
Includes Bombora intent data | Less EU/global coverage |
Strong trigger/event data | UI feels dated |
Unlimited exports | Credit limits on some plans |
Lead411 rating and reviews
G2: 4.5 out of 5 stars (see reviews)
Capterra: 4.6 out of 5 stars
15. RocketReach (best for personal contact info)

Category: Contact finding
Best for: Personal + professional contact info
Ease of use: Beginner to intermediate
Pricing: Free plan, paid starts at $39/month
RocketReach occupies an interesting niche: it bridges professional and personal contact data. While most B2B providers focus exclusively on work emails, RocketReach also surfaces personal Gmail addresses, direct phone numbers, and social profiles.
The database spans 700M+ profiles, larger than most pure B2B providers because it includes personal information beyond business contacts.
How RocketReach works
Name + Company search for specific individuals. Bulk search for mass enrichment. Advanced filters by title, location, skills, education. Browser extension for LinkedIn and company sites. Data includes work emails, personal emails, phone numbers, and social profiles.
Who is RocketReach for?
Recruiters sourcing candidates (personal emails bypass HR). PR professionals reaching journalists and influencers. Sales teams wanting backup contact methods. Researchers gathering comprehensive profiles.
Pricing plans
Essentials: $39/month (170 lookups)
Pro: $99/month (370 lookups)
Ultimate: $249/month (1,590 lookups)
Pros and cons
Pros | Cons |
|---|---|
700M+ profiles | Lookup limits restrictive |
Personal and work contact info | Interface feels dated |
Strong for recruiting and PR | Expensive at high volume |
API available for automation | No intent or firmographic data |
RocketReach rating and reviews
G2: 4.5 out of 5 stars (see reviews)
Capterra: 4.2 out of 5 stars
16. UpLead (best for guaranteed email accuracy)

Category: B2B contact database
Best for: Guaranteed email accuracy
Ease of use: Beginner
Pricing: Starts at $74/month
UpLead has built its entire brand around one promise: 95% email accuracy, guaranteed. In a market full of inflated claims, UpLead backs theirs with credits: if an email bounces, you get the credit back.
The real-time verification is key. When you download a contact, UpLead checks the email against the mail server right then, not days or weeks ago.
How UpLead works
155M+ B2B contacts with verified emails. Real-time verification at download time. 50+ search filters including technographics. CRM integrations with Salesforce, HubSpot, Pipedrive, Zoho. Credits roll over month-to-month.
Who is UpLead for?
Quality-focused teams tired of bounced emails. Email marketers protecting sender reputation. SMBs wanting reliable data without enterprise pricing.
Pricing plans
Essentials: $74/month (credits included)
Plus: $149/month
Professional: $299/month
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
95% accuracy guarantee (backed by refunds) | Smaller database (155M vs competitors' 275M+) |
Real-time email verification | US-focused |
Credits roll over month-to-month | Phone data isn't the strength |
50+ search filters | Intent data costs extra |
UpLead rating and reviews
G2: 4.7 out of 5 stars (see reviews)
Capterra: 4.6 out of 5 stars
17. Seamless.AI (best for AI-powered lead generation)

Category: AI-powered lead generation
Best for: High-volume US prospecting
Ease of use: Intermediate
Pricing: Free plan, custom pricing for paid plans
Seamless.AI takes a fundamentally different approach to B2B data: instead of maintaining a static database, it uses AI to crawl the web and find contact information in real-time. The company markets itself as a cheaper ZoomInfo alternative with AI-powered accuracy.
Our experience with Seamless has been mixed. When it works, you find contacts that other databases miss. When it doesn't, you get outdated or incorrect information. User reviews reflect this polarization.
How Seamless.AI works
You search with criteria (title, company, location). AI crawls the web in real-time. Results returned with contact information. Emails checked for deliverability. Chrome extension and CRM integrations included.
Who is Seamless.AI for?
US-focused sales teams wanting AI-powered prospecting. Users who've hit walls with static databases. Teams willing to trade some accuracy for coverage.
Pricing plans
Free: Limited credits to test
Pro: ~$147/month (annual commitment typically required)
Enterprise: Custom pricing
Watch auto-renewal terms carefully.
Pros and cons
Pros | Cons |
|---|---|
Real-time AI search finds contacts others miss | Accuracy inconsistent (60-75% match rates) |
Large US contact volume | Billing transparency concerns in reviews |
User-friendly Chrome extension | Compliance questions (GDPR/CCPA) |
CRM integrations available | Annual contracts pushed aggressively |
Seamless.AI rating and reviews
G2: 4.3 out of 5 stars (see reviews)
Capterra: 4.2 out of 5 stars
18. Adapt.io (best for technographic data)
Category: Technographic data
Best for: Tech stack targeting
Ease of use: Beginner to intermediate
Pricing: Free plan, paid starts at ~$39/month
Adapt.io combines contact data with technographic intelligence. The platform tracks 10,000+ technologies, letting you filter prospects by the tools they already use.
This enables powerful displacement campaigns (targeting companies using your competitor) or integration plays (targeting companies using tools you integrate with).
How Adapt.io works
Contact database with 100M+ contacts and 30M+ companies. Technographic data tracking 10,000+ technologies. Lead builder filtering by tech stack and firmographics. Chrome extension for LinkedIn prospecting. CRM integrations with Salesforce, HubSpot, Pipedrive.
Who is Adapt.io for?
SaaS companies running competitive displacement. Sales teams wanting tech stack context for pitches. Marketing teams building technology-based segments.
Pricing plans
Free: Limited credits to test
Starter: ~$39/month per user
Professional: Custom pricing
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
10,000+ technologies tracked | Smaller database than major competitors |
Excellent for displacement campaigns | US-focused |
Clean, modern interface | Phone accuracy varies |
Good value at entry level | Limited intent data |
Adapt.io rating and reviews
G2: 4.6 out of 5 stars (see reviews)
Capterra: 4.5 out of 5 stars
19. Datanyze (best for technology tracking)
Category: Technographic data
Best for: Technology tracking
Ease of use: Beginner
Pricing: Free plan, paid starts at $21/month
Datanyze pioneered the technographic data space, tracking what technologies companies use by analyzing their websites. ZoomInfo acquired them in 2020, but the standalone product still exists for users who want affordable tech tracking.
The tool tracks 60,000+ technologies across websites globally.
How Datanyze works
Technology tracking detecting 60,000+ technologies on websites. Contact data with business emails and phone numbers. Chrome extension showing technographics while browsing. Technology change alerts when companies add/drop tools.
Who is Datanyze for?
Individual sales reps wanting affordable tech tracking. Small teams who don't need full ZoomInfo. Competitive analysts tracking technology adoption.
Pricing plans
Free: Limited searches to test
Nyze Pro 1: $21/month (80 credits)
Nyze Pro 2: $39/month (160 credits)
Pros and cons
Pros | Cons |
|---|---|
60,000+ technologies tracked | Contact data limited |
Very affordable entry pricing | Owned by ZoomInfo (may be sunset) |
Technology change alerts | No intent or ABM features |
90-day free trial | Future uncertain |
Datanyze rating and reviews
G2: 4.2 out of 5 stars (see reviews)
20. LeadIQ (best for Salesforce workflows)
Category: Sales prospecting
Best for: Salesforce workflows
Ease of use: Beginner to intermediate
Pricing: Free plan, paid starts at $39/month
LeadIQ focuses on something specific: keeping your CRM clean while prospecting. Instead of dumping contacts into Salesforce and dealing with duplicates later, LeadIQ checks for existing records and enriches them in real-time.
Job change tracking is another standout feature. When prospects move companies, LeadIQ detects it and alerts your team.
How LeadIQ works
Contact capture while browsing LinkedIn. CRM sync with real-time duplicate checking and enrichment. Job change tracking alerts. AI email writer for personalized outreach. Sequences integration to push contacts directly to cadences.
Who is LeadIQ for?
Salesforce-heavy sales teams prioritizing CRM hygiene. SDRs prospecting on LinkedIn. Sales ops professionals managing data quality.
Pricing plans
Free: Limited captures per month
Essential: $39/user/month
Pro: $79/user/month
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
Excellent Salesforce integration | Mobile number limits on all plans |
Real-time duplicate checking | Smaller database than competitors |
Job change tracking is valuable | Salesforce-specific value |
AI email personalization | Not for bulk list building |
LeadIQ rating and reviews
G2: 4.2 out of 5 stars (see reviews)
21. Crunchbase (best for startup + funding data)
Category: Company intelligence
Best for: Startup + funding data
Ease of use: Beginner
Pricing: Starts at $29/month
Crunchbase is the definitive source for startup and funding intelligence. If a company has raised venture capital, Crunchbase probably knows about it, often within hours of the announcement.
The database tracks 3M+ companies with detailed funding histories: rounds, amounts, investors, valuations.
How Crunchbase works
Company profiles with 3M+ companies. Funding data with rounds, amounts, investors, valuations. Investor profiles tracking VCs and portfolios. M&A tracking for acquisitions, IPOs, and exits. News with same-day updates on funding announcements.
Who is Crunchbase for?
Sales teams targeting startups (funded companies have budget). Investors tracking deal flow. Competitive analysts monitoring the landscape. Note: No direct contact data (no emails/phones).
Pricing plans
Starter: $29/month
Pro: $49/month
Enterprise: Custom
Pros and cons
Pros | Cons |
|---|---|
Definitive source for funding data | No direct contact data |
Same-day updates on announcements | US startup-focused |
3M+ company profiles | Some data is self-reported |
Affordable pricing | Need separate tool for contacts |
Crunchbase rating and reviews
G2: 4.5 out of 5 stars (see reviews)
Capterra: 4.2 out of 5 stars
22. D&B Hoovers (best for firmographic + financial data)
Category: Company intelligence
Best for: Firmographic + financial data
Ease of use: Intermediate
Pricing: Starts at ~$5,388/year
Dun & Bradstreet has been in the business data game for over 180 years, longer than any other provider on this list. D&B Hoovers is their sales intelligence product, offering deep firmographic and financial data on 330M+ companies globally.
What sets D&B apart is the depth: corporate hierarchies, subsidiary relationships, financial risk scores, payment histories. The D-U-N-S number is effectively the industry standard for B2B company identification.
How D&B Hoovers works
Company database with 330M+ business records globally. Firmographic data including industry, size, revenue. Corporate hierarchies with parent companies, subsidiaries, branches. Financial data with credit scores, payment behavior, risk assessment.
Who is D&B Hoovers for?
Enterprise sales teams targeting large, complex organizations. Finance teams doing credit checks and due diligence. Global organizations tracking international accounts.
Pricing plans
Essentials: ~$5,388/year
Enterprise: Custom pricing
Pros and cons
Pros | Cons |
|---|---|
330M+ companies globally | Expensive ($5K+/year entry) |
180+ years of business data history | Contact data accuracy lags |
D-U-N-S numbers are industry standard | Interface feels dated |
Deep corporate hierarchies | Annual contracts only |
D&B Hoovers rating and reviews
G2: 4.0 out of 5 stars (see reviews)
Capterra: 4.1 out of 5 stars
23. SalesIntel (best for human-verified data)
Category: Human-verified data
Best for: Maximum accuracy via human verification
Ease of use: Intermediate
Pricing: Custom, annual commitment
SalesIntel takes a fundamentally different approach to data accuracy: human verification. While most providers use algorithms and automated validation, SalesIntel employs a research team to manually verify contact information.
The "Research-on-Demand" feature is unique. If you need contacts at a specific company and they're not in the database, SalesIntel's research team will find them for you.
How SalesIntel works
Human-verified contacts validated manually by research team. 95% accuracy guarantee backed by verification processes. Research-on-Demand for custom research needs. Intent data via Bombora integration. Re-verification every 90 days to catch job changes.
Who is SalesIntel for?
Accuracy-obsessed teams tired of bad data. Organizations where data quality directly impacts revenue. Enterprise sales needing reliable contact information.
Pricing plans
Custom pricing based on needs. Annual commitment required. Based on market feedback: ~$10,000-$25,000+/year. Intent data and Research-on-Demand included.
Pros and cons
Pros | Cons |
|---|---|
95% accuracy backed by human verification | Custom pricing only |
Research-on-Demand for custom needs | Annual commitment required |
90-day re-verification cycle | Smaller database than major competitors |
Bombora intent data included | Human research adds delays |
SalesIntel rating and reviews
G2: 4.4 out of 5 stars (see reviews)
Capterra: 4.3 out of 5 stars
How do data vendors collect and compile data?
B2B data providers collect and compile data from multiple sources:

Public records: Company registrations, trade registers, filings
Web scraping: Publicly available information from websites and social profiles
Data partnerships: Agreements with other data companies
Contributory networks: Users share contact information in exchange for access
Publisher cooperatives: Intent data from content consumption (like Bombora's 5,000+ B2B publishers)
Human verification: Research teams manually validating contact data
When they have raw data, vendors process, clean, and verify it to ensure data accuracy. Some b2b data suppliers also enrich data with additional context to create more comprehensive datasets.
Important: Ensure your data vendor uses compliant data collection methods. Using personal data that violates data protection regulations like GDPR or CCPA will result in hefty fines.
Why use a B2B data vendor?
Using a b2b data provider offers several benefits:
Better leads: B2B data vendors give you access to up-to-date company and contact information. This helps identify and target potential leads more effectively instead of wasting time on bad-fit prospects.
Improved campaigns: With accurate data, you can develop targeted marketing campaigns that connect with your audience and drive higher conversion rates.
Cost savings: Data collection, cleaning, and verification are labor-intensive. Outsourcing to b2b data vendors saves money because you won't need internal resources for these tasks.
Market intelligence: B2B data providers help you understand market trends, competitor activity, and customer behavior for better business decisions.
More sales opportunities: Access to high-quality b2b data helps identify new opportunities and expand your customer base.
In short, the right b2b data vendor helps streamline operations, improve decision-making, increase sales, and grow your business with accurate and reliable data.
Risks to avoid when choosing a B2B data provider
When selecting a b2b data vendor, watch out for these common risks:

Lack of transparency: Red flag if a vendor won't disclose data sources or collection methods. You need to know they're adhering to ethical practices.
Poor reputation: Research the b2b data provider online. No reviews or bad reviews mean skip to the next option, even if pricing is cheap.
Inaccurate data: Verify that data provided is accurate and up-to-date. Inaccurate data wastes resources and damages your sender reputation.
Non-compliance with data privacy regulations: Your data vendor must supply compliant data. GDPR fines reach €20M or 4% of global revenue. CCPA fines hit $7,500 per violation.
Lack of data security: Ensure solid security measures are in place. Data breaches expose you and your customers to risk.
How to choose a B2B data vendor
When picking a b2b data provider, look for:
Data quality: The data should be accurate, complete, and relevant to your business needs. Ask about verification processes and data freshness.
Data sources: The vendor should be transparent about where data comes from and how it's collected. This ensures compliance with data protection regulations.
Data coverage: Evaluate geographic and industry coverage. Many US-focused providers have weak European or APAC data.
Data security: Look for ISO 27001, SOC 2, or similar certifications. The vendor should have solid security measures protecting your data.
Customization: Choose data vendors who offer options specific to your needs rather than generic one-size-fits-all packages.
Scalability: If you want long-term collaboration, ensure the vendor can scale services as your business grows.
Pricing: Review packages and pricing to find options that fit your budget. Watch for hidden costs and restrictive contracts.
Customer support: Pick a vendor who answers questions promptly and fixes issues quickly.
Choose FullEnrich for maximum data coverage
If you want a b2b data provider that queries 15+ premium sources to achieve 85%+ match rates — significantly higher than any single-source vendor — try FullEnrich.
Our waterfall enrichment approach means you get verified contact data from the best source for each specific contact, with triple email verification keeping bounce rates under 2%.
Get 50 free credits → No credit card required.
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