B2B data providers play a vital role in helping sales and marketing teams maintain accurate and timely contact data for successful outreach and conversions. Poor data quality costs businesses $25M or more annually (Forrester), with 22.5% of data decaying every year (HubSpot). Accurate data powers personalized campaigns, remarketing, and timely engagement.
In this landscape, the role of B2B data vendors becomes indispensable as they supply verified contact information that can be leveraged into solid leads when managed effectively.
Now, let’s explore the top US B2B data list providers.
CIENCE provides expert sales intelligence services, helping businesses access high-quality data from across all industries to fuel their growth. Our team ensures the quality, freshness, and accuracy of the data we use, allowing us to craft personalized campaigns and strategically target the most valuable prospects on behalf of our clients.
Capterra Rating: ⭐4.6/5 (115 reviews)
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What Clients Say About CIENCE:
- "Building our top of funnel was a nice blend of Art and CIENCE! There is no disconnect between Sales teams and their Growth teams. Sales was articulate in helping prescribe a solution. We sought them out for a different solution that would have cost us more and made them more money. But they understood the problem to solve and prescribed a solution that is meeting the objectives." - Jeff M.
- "Provided the net new start I needed. The hands on approach. They wanted me to be successful so I will continue working with them. They also communicate incredibly well and have been incredibly responsive. - Justin Z.
- "Good communication and delivered what they said. Simple and straightforward onboarding, clear deliverables." - Mark P.
Challenges CIENCE Solves for Businesses:
Apollo.io is a sales intelligence platform that offers over 250 million business contacts, integrating lead generation with sales engagement tools. It includes outreach automation, analytics, and CRM connectivity.
G2 Rating: ⭐4.8/5 (7,508 reviews)
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What Users Love About Apollo:
"I use Apollo to prospect, to hunt the outbound leads, and to communicate with customers that participate from our webinars. It is a tool the helps me a lot to improve my daily business." - Renata Z.
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Challenges Users Face with Apollo:
"Apollo.io's pricing can be expensive for smaller businesses, especially as many advanced features are locked behind higher-tier plans" - Dheeraj S.
UpLead offers more than 85 million B2B contacts with 95% data accuracy. The platform also promotes a technology tracking system, account-based marketing applications, and competitor intelligence insights. Their lead generation and sales intelligence features include intent data triggers, data enrichment, and predictive modeling.
G2 Rating: ⭐4.7/5 (780 reviews)
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What Users Love About UpLead:
"Customer support and training have been fantastic and love having a U.S. based support group. Real time data with customer contact info being constantly updated. " - Christopher B.
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Challenges Users Face with UpLead:
"UpLead's database is not as comprehensive as some other lead generation tools. This means that some potential leads may not be included in their database, limiting your pool of potential prospects." - Mike J.
Adapt covers data of 100 million business contacts from various sectors, such as software and internet, financial services, telecommunications, and transportation and storage. Their information is regularly developed and updated through their community of more than 300,000 users and can be filtered based on industry, department, revenue, employee count, geography, and more.
G2 Rating: ⭐4.6/5 (2,774 reviews)
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"All contacts are well placed and accuracy is too good." - Aashish C.
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Challenges Users Face with Adapt?
"The fact that there are no unlimited accounts you can buy, or at least make it to where we can pick unlimited one industry. I want retail leads only, but 500 or 600 a year isn't going to do me that good." - John S.
Cognism specializes in GDPR-compliant, real-time business contact data enriched with technographic and firmographic insights. The platform helps sales teams optimize outreach through intent data and lead scoring capabilities.
G2 Rating: ⭐4.6/5 (727 reviews)
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What Users Love About Cognism:
"Cognism helps us break into the EMEA market. Other data sources had great US data, but the EMEA data was lacking. " - Shawn H.
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Challenges Users Face with Cognism?
"The data is not perfect and I often run into wrong numbers and out of date email addresses..." - Judith B.
ZoomInfo is a B2B contact database provider that created a separate platform for sales, marketing, talent management, and operations. ZoomInfo’s content profiles include certifications, employment history, online mentions, job duties, and social media profiles.
G2 Rating: ⭐4.4/5 (8,629 reviews)
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What Users Love About Zoominfo:
"What I like best about ZoomInfo sales is that it truly utilizes the best people, processes and technology to help my inpput, validate, optimize and capitalize on my sales pipeline." - Nathan P.
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Challenges Users Face with Zoominfo?
"Onboarding. Onboarding leaves some to be desired. So, if your target audience is under 50+ employees or a small business in-general, then this isn't the platform for you, despite what the sales professional will tell you." - Kurt S.
Breeze (formerly Clearbit) provides data intelligence for over 200 million contacts across 20 million companies. It empowers businesses to identify website visitors, personalize engagement, and integrate seamlessly with HubSpot’s CRM, sales, and marketing tools for real-time data updates and enrichment.
G2 Rating: ⭐4.4/5 (625 reviews)
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What Users Love About Breeze (formerly Clearbit):
"It is very easy to use. We have to find many company owner's details for the sales and this tool help us to find those details. Accuracy rate is very high and we can easily find unlimited details from this tool. Not only the company owner, we can find all senior level executive's email ids with the help of this tool." - Jinat S.
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Challenges Users Face with Breeze (formerly Clearbit):
"From my perspective, I found Clearbit's platform to have a bit of a learning curve. It took me some time to navigate and fully utilize its features effectively. Additionally, I encountered occasional discrepancies in the data provided, which required me to verify information from other sources. Simplifying the user experience and ensuring more consistent data quality would greatly improve my overall experience with Clearbit." - G2
Demandbase gives access to worldwide corporate data so its partners may expand their business with reliable international leads. A major feature of this data provider is that it can also be used to clean and enrich the contacts you already possess. Customers utilize InsideView to locate additional prospects who fit their ICP, uncover new markets, and receive reliable data and business insights.
G2 Rating: ⭐4.3/5 (1,621 reviews)
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What Users Love About Demandbase:
"Demandbase offers a sophisticated suite of tools for marketing & sales teams. The Demandbase team is an absolute pleasure to work with and feels more like an extension of our own team rather than an external partner. " - Mick B.
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Challenges Users Face with Demandbase:
"I don't really like that the service doesn't include complex reporting or personalized customer support. And I find that it can take time and effort to fully understand how to use all of its features and get the most out of the platform." - Mekaele W.
Directly connected to the most popular B2B data social network in the world, LinkedIn Sales Navigator allows sales teams to manage their LI target account lists and integrate them into their CRM while also getting notified of new, relevant matches and actions taken by those accounts.
G2 Rating: ⭐4.3/5 (1,938 reviews)
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What Users Love About LinkedIn Sales Navigator:
"It's a sales person's delight. The tool is a core/ must-have for all in a sales team - SDR, AE, AM, Team elads. The ability to map accounts, see buyer's intel for your focus accoutns, intelligent account maps, and so much more makes a sales person's job easy and reduces manual work. Inmails is an added benefit. I use it everyday and it's my go to tool for account reach out." - Nalini K.
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Challenges Users Face with LinkedIn Sales Navigator:
"It is incredibly expensive, not really worth the price just to be able to message people. Furthermore, it has been proven by personal experience and a lot of other users confirmed that when contacting someone via Sales Navigator, it immediately is perceived as spam, and therefore the messagges are ignored." - Monica C.
Datanyze provides information on 120 million people, 84 million email addresses, and 48 million direct call numbers. Customers can utilize a Google Chrome extension to instantly obtain contact and company data from the websites and LinkedIn groups where they most frequently prospect.
G2 Rating: ⭐4.2/5 (444 reviews)
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What Users Love About Datanyze:
"1. User Interface is very good.
2. Data accuracy for me has be consistently 90% +
3. Chrom extension works very well." - Gautam S.
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Challenges Users Face with Datanyze:
"Customer support. The options for changing plans in the personal account do not work correctly. Be prepared that you will not be able to renew your plan after the pause, to level up only. Be prepared that you will not get any help from customer support." - Oleksandra R.
Lusha offers high-quality direct contact data, focusing on B2B emails and phone numbers. It integrates with LinkedIn and CRMs to simplify lead management.
G2 Rating: ⭐4.3/5 (1,476 reviews)
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What Users Love About Lusha:
"Precise and reliable b2b contacts database, easy to use both from their Saas platform and through the LinkedIn add-on. The amount of contacts with details is satisfying with my needs. Customer support it's also very good." - Stefano T.
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Challenges Users Face with Lusha:
"It’s a horrible experience that your product can’t be used on a phone. How are reps on the go supposed to successfully prospect? Also, they claim their data is accurate yet we are finding 40% inaccuracy abd that's being modest." - Trisha G.
Lead411’s contact data covers verified direct dial phone numbers, emails, trigger notifications (such as job changes, compliance requirements, and changes in products or prices), and lead intelligence insights. It also offers Bombora Intent Data within its platform so the sales teams can pinpoint companies and contacts that are actively searching for their products.
G2 Rating: ⭐4.5/5 (461 reviews)
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What Users Love About Lead411:
"Lead411 is incredibly intuitive to use. It allows me to identify and connect with prospects efficiently, which is essential for my introductory email campaigns. The user-friendly interface makes navigating the platform straightforward, and I can quickly find the information I need. Customer support has been great." - John L.
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Challenges Users Face with Lead411:
"There is a bit of clunkiness to the platform. It was difficult to see the regions for sorting contacts. The instruction videos were a bit choppy...though completed in another video selection, the video didn't say so, giving the impression that there was nothing left. Customer service is professional and good, just quite slow." - David L.
DemandScience is a data-driven marketing tool that employs an expanding B2B client database to provide companies with segmented leads. They monitor millions of online interactions and account-based content engagements by tracking campaigns and behavioral patterns.
G2 Rating: ⭐4.4/5 (210 reviews)
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What Users Love About DemandScience:
"The ease of use - it is readaliy available in our campaign platformss We utalize puechased data of all sorts, we've found DemandScience to be reliable and effective." - G2
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Challenges Users Face with DemandScience:
"We've used DemandScience a few times and while the leads are really high quality, the response rates in follow up and nurturing were below expectations. "- Cody L.
RocketReach provides access to over 700 million professionals across 35 million companies, offering direct contact data and social media insights.
G2 Rating: ⭐4.5/5 (760 reviews)
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What Users Love About RocketReach:
"Our team has used a number of data providers to assist in our cold outreach efforts, and may of them fell short before we found RocketReach. I would say that the thing I like most about RocketReach is the accuracy of the data. It's definitely above other tools I've used." - Thomas C.
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Challenges User face with RocketReach:
"This company is out of touch with small business owners based on their pricing. Startups cannot afford the minimum $576 with only annual billing and they expect you to take that leap with a far too abbreviated trial. Maybe that's what the company wants: to only deal with enterprise customers." - Don H.
Owler's business information is powered by its network of more than 3.5 million business people. The platform polls its members each month for statistics about their businesses, including private firm income projections, employee counts, and CEO approval ratings. Sales teams can prospect new sales leads and check for trigger notifications with the assistance of specialized insights.
G2 Rating: ⭐4.3/5 (479 reviews)
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What Users Love About Owler:
"Data rich and content that helps me in doing preliminary research before speaking with prospective customers" - Raj S.
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Challenges Users Face with Owler:
"The data seems to be spotty and not all that accurate." - Dave H.
SalesIntel offers 95% human-verified account data to build sales pipelines, nurture leads, and close deals faster. The platform includes firmographic and technographic organizational charts, and buying signals of over 7,000 internet topics that are actively being researched by specific organizations.
G2 Rating: ⭐4.3/5 (388 reviews)
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What Users Love About SalesIntel:
"The detailed contact and company information that SalesIntel offers have been crucial in identifying our Ideal Customer Profile (ICP). " - Lauren P.
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Challenges Users face with SalesIntel:
"Occassional inaccuracies or outdated information is what I've experienced." - Nick S.
The database of LeadIQ is composed of open data (found on company and social media websites), partnerships with more than a dozen data providers, and a community of users who have connected their inboxes to the platform. Prospects can be pushed directly to a CRM and compared with other contacts.
G2 Rating: ⭐4.2/5 (934 reviews)
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What Users Love About LeadIQ:
"The tool is incredibly user-friendly, thanks to its Chrome extension and pop-out window that make it easy to find contact information from LinkedIn and sync it directly into HubSpot. The email quality is decent, and the phone number data is improving, with the premium search being a valuable addition." - Onkar P.
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Challenges Users Face with LeadIQ:
"One drawback of LeadIQ is that occasionally the data accuracy from imported leads may vary. While it generally provides reliable information, there are times when contact details or other information might be outdated or incorrect." - Ashutosh V.
A real-time search engine for B2B contact information, Seamless.ai features direct dial phone numbers and email addresses for over 157 million businesses that have been authenticated by a 10-step AI engine. The platform allows the most relevant filters, including industry, staff numbers, technographics, revenue, and more.
G2 Rating: ⭐4.3/5 (4,741 reviews)
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What Users Love About Seamless.AI:
"The ease of use in entering and uploading CSV lists of contacts is truly similar to alot out there - but then again how can one differentiate themselves in a document upload process. " - Rob S.
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Challenges Users face with Seamless.AI:
"Forget about the data quality and poor UI, this company has very questionable business practices. " - Adam S.
GetProspect is an email finder and B2B lead generation tool that helps businesses extract contact information from LinkedIn. With its browser extension, users can quickly build prospect lists and export data to CRMs, enabling effective lead generation and outreach.
G2 Rating: ⭐4.0/5 (38 reviews)
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What Users Love About GetProspect:
"The ease of use and customer support of tool is great!" - G2
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Challenges Users Face with GetProspect:
"A ton of problems. Loads slow, blank screens, you have to reload multiple times, export fails many times. Keep clearing site data, logging out and logging in. Search UI sucks, if you add filters search won't get updated. Instead you need to remove all filters and select them again with that one additional filter you were trying to add in the previous run." - Arif K.
Leadspace supports the creation of demand-generating systems and procedures. Their platform offers data management, inbound and outbound lead creation, and ABM intelligence solutions. The software uses a precise and customized engagement strategy to help attract ideal customers.
G2 Rating: ⭐4.3/5 (109 reviews)
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What Users Love About Leadspace:
"I appreciate that we've been able to score and enrich leads efficiently, match accounts and expanding its use to find new contacts within our target companies." - Hichem G.
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Challenges Users Face with Leadspace:
"The lead-to-account matching isn’t perfect. I’ve noticed delays - sometimes up to a week - when changes need to be made offline, particularly when updating lead evaluations. We’ve learned to work around this by scheduling monthly submissions for offline mapping, but a more unified system would save us considerable time." - Hichem G.
💡 Worth reading: Top 20 Email List Providers for 2025
CIENCE stands apart from other B2B data providers with a range of strategic advantages that ensure high-quality lead generation.
AI-Driven Lead Precision with MemoryAI
Massive Database Coverage
Comprehensive Intent Data Solutions
Real-Time Data Verification
Human Expertise + AI Power
Unlike other platforms such as ZoomInfo or Apollo.io, CIENCE offers direct expert support combined with flexible pricing—without locking you into a pay-per-contact model. This ensures businesses of all sizes can access tailored, high-quality lead generation services with a focus on ROI.
Ready to elevate your lead generation? Experience the CIENCE advantage with personalized data solutions, expert support, and flexible pricing.
B2B data providers collect extensive contact databases, helping sales and marketing professionals segment real-world contacts for crafting buyer personas and executing ABM strategies through cold calls and personalized emails.
As happens with every other environment, the data vendors market also presents a number of unpleasant factors that can harm the investment made by uninformed organizations.
Here are some common perils of working with unprofessional B2B data suppliers:
Where B2B database providers get their data and what makes it the best among other vendors are great questions every company should consider before signing any contract. Examine the following factors to determine which data provider is right for you:
It is always wise to talk to a sales representative with questions ready. Your company will save precious time by properly researching potential data providers and eliminating those that don't meet your requirements. Here are a few things to consider when vetting potential B2B data providers:
The right B2B data provider will be the one that gives you exactly what you need. For that reason, it is imperative that you determine what data-based goals have top priority and share that information with the data vendor.
Standard B2B data-focused objectives include:
You can also ask for real examples of how other clients have managed to fulfill similar objectives. Many data providers are used to this kind of request and will already have case studies and other step-by-step guides ready to go.
The best way to have an authentic look at any digital platform is to access it in real-time. It would not be easy to evaluate the quality and quantity of a dataset without real-world experience.
Most B2B database providers will be more than willing to offer a free sample or demo. So, schedule a meeting with the data vendors you found more suitable and let them help you navigate through their platform.
Imagine that you already went through a list of B2B data provider companies and handpicked five options that match your data goals. All the demos were terrific, and even the costs were similar. How do you make the final call?
Among the B2B data companies available, some possess unique traits that could translate into a game-changer situation for companies that are looking to take data-based decision-making to the next level.
Here are some outstanding characteristics to consider while choosing a B2B database provider:
A B2B data provider supplies businesses with essential data for sales, marketing, and customer outreach. These providers aggregate and maintain vast databases, including firmographics, technographics, contact details of key decision-makers, and other business insights. Their offerings help companies identify target accounts, develop personalized campaigns, and streamline lead generation processes.
B2B data aids in identifying and segmenting potential customers, allowing businesses to craft targeted marketing campaigns and personalized outreach efforts. Leverage AI SDR tools to automate data analysis, personalize outreach, engage prospects via chatbots, and apply predictive analytics to identify and prioritize high-potential leads.
Reliable providers offer regularly updated, comprehensive data sets with high accuracy rates, robust security measures, and positive reviews from current and past users.
Data vendors often provide firmographics, technographics, contact details of key decision-makers, industry classification, and more.
The frequency of data updates can vary by provider, but top providers often refresh their data daily to ensure accuracy and relevance.