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Prospecting 29 April 2024

20 B2B Lead Generation Companies & Agencies [High ROI]

Maja Muzhdeka

Our picks for the best B2B lead generation companies and agencies are 👇


  1. Kaspr.
  2. Cognism.
  3. ZoomInfo.
  4. CIENCE.
  5. Salespanel.
  6. LeadGeneration.com.
  7. Apollo.io.
  8. LeadGenius.
  9. Salesloft.
  10. Upcall.
  11. Belkins.
  12. Martial Group.
  13. Callbox.
  14. Snov.io.
  15. Lusha.
  16. Operatix.
  17. Leadium.
  18. Cleverly.
  19. Pearl Lemon Leads.
  20. DiscoverOrg.


High ROI B2B lead generation companies

1. Kaspr

⭐ 4.4/5 on G2


Kaspr is a lead generation company that gives you access to email addresses and phone numbers in just one click.


With the LinkedIn Chrome Extension, you can get the contact details of potential customers as soon as you visit their profile. Kaspr enriches the data from individual LinkedIn profiles and your list of leads, too. The data provided is GDPR and CCPA aligned.


There’s also a dashboard where you can organize your leads. You can create lists, notes and tasks. This is just one feature that makes Kaspr an all-in-one prospecting platform for SDRs and recruiters.


Kaspr’s data coverage includes the following:

  • 500M+ Phone numbers and email addresses.
  • 200M+ Business profiles.


It also works with your favourite CRMs to send your prospective clients straight to your other sales apps.

Generate leads with Kaspr for free

Sign up with your work email here 👇

Get started for free


Graphic of all-in-one prospecting summary for Kaspr



Overall, Kaspr makes it easier to get in contact with hot leads. And one of the best parts? Kaspr comes with access to unlimited B2B email credits on both its paid and free plans.  


💡 Check out the pricing page for more information. 


Main features: 

  • Chrome Extension.
  • Form of API access on all plans.
  • Data enrichment.
  • LinkedIn outreach workflows.
  • Bulk extract from LinkedIn profiles, lists, posts, groups and events.
  • GDPR and CCPA-aligned data.
  • Integrations with HubSpot, Pipedrive, Lemlist, Salesforce, and more.



Starts at $0, try Kaspr for free (with access to unlimited B2B email addresses).



Companies using Kaspr have reported significant improvements in accessing high-quality leads and improving conversion rates.

“An incredible tool
for sales”

“Within the first two weeks [of using Kaspr and changing the strategy], six discovery calls have been booked. You’ve empowered us to keep up with our BDR.” 

Andy Earnshaw
Head of Operations at Visibly HQ

2. Cognism

⭐ 4.6/5 on G2


Cognism is a sales intelligence platform with a GDPR and CCPA compliant B2B database.


It has a web app and browser extension to provide company and contact data, including mobile numbers and emails for decision-makers.


One of the unique features of this lead generation platform is that it’s got Diamond Data®, where mobile numbers are phone verified.


Graphic about Cognism Diamond Data® stats

It works with LinkedIn and Sales Navigator, corporate websites, Outreach, HubSpot and Salesforce.


What also sets Cognism apart from other B2B lead generation companies is their GDPR compliance. 


They scrub their mobile numbers against global Do-Not-Call (DNC) registries.


Main features:

  • Phone-verified Diamond Data®.
  • Bombora’s intent data.
  • Mobile data scrubbed clean against global Do-Not-Call lists.
  • Integrations with popular CRMs and sales tools.
  • EMEA, NAM, and APAC coverage.
  • GDPR and CCPA-compliant data.



Customized packages based on your needs, available on request. Cognism also offers 25 free leads when you sign up. 



Cognism’s clients have reported improvements in their sales pipeline and revenue growth.


“In just three months, we’ve closed two deals worth our two-year contract value. We’ve already made back what we spent and couldn’t be happier.” - Moonhub


And StoreForce saw ROI from Cognism with a 41% positive reply rate. 


“Many vendors promise ROI and don’t deliver. With Cognism, we’ve seen ROI and not everyone can say that. Cognism does what it promises, which is why I’m a huge advocate. It actually works.”

3. ZoomInfo

⭐ 4.4 / 5 on G2


ZoomInfo provides B2B contact and company data for sales, marketing and recruitment teams. 


They offer a large database which allows you to search for qualified leads in specific industries, locations, or job roles. This makes it easier to connect with potential leads, with intent alerts giving you an idea of who’s buying right now.


Screenshot of ZoomInfo website(Source: ZoomInfo)


ZoomInfo comes with a Chrome Extension and a web app. They bundle their features in what they call Operating Systems (OS).


Main features:

  • Advanced search and filtering options.
  • Contact and company insights.
  • Intent data and real-time alerts.
  • Website visitor tracking.
  • Seamless CRM integration.



The pricing details are available upon request.



Here’s what ZoomInfo’s clients have reported:


“SalesOS has supercharged our growth potential. To date, we are seeing 5 times the ROI, given the number of new accounts it has surfaced for us. The pipeline has grown significantly, and the team has far exceeded revenue targets from the previous year.” - BuildOps


“Nearly all of our business is sourced from ZoomInfo. It’s our go-to tool. All in all, since bringing on ZoomInfo, we’ve seen a 10x ROI.” - Clum Creative


⭐ 3.8/5 on G2


CIENCE is a lead generation agency that uses human research and AI-powered tools to find potential customers for B2B companies.


They provide end-to-end B2B lead generation services, from prospecting to appointment settings, so that businesses can focus on closing deals.


Their team of sales representatives and specialists work closely with clients to understand their target market and deliver high-quality leads.


Main features:

  • Personalized outbound prospecting.
  • Account-based marketing (ABM) strategies.
  • Data-driven lead research and qualification.
  • Multi-channel outreach campaigns.
  • Reporting and analytics that measure performance and ROI.



Custom pricing based on requirements.



CIENCE has a proven track record of achieving impressive results for their clients. 


Blueprint, one of their satisfied customers, said: 


“They helped us gain many new customers within the first 6 months.” 


Another case study from Silicon Valley Insight reported that:


“Since working with CIENCE, we’ve increased our monthly new appointments by over 500%.  In the beginning, the most effective channel was the phone. After that, emails started bringing more appointments with an open rate of 26%.”

5. Salespanel

⭐ 4.5 /5 on G2


Salespanel is a tool that helps capture, track and qualify leads from different marketing channels.


It also tracks the customer journey of every lead on your website and app. And provides sales and marketing teams with behavioral analytics and visitor intelligence.


Screenshot of Salespanel website(Source: Salespanel)


Main features:

  • Real-time notifications and alerts.
  • Visitor journey mapping.
  • Lead scoring and qualification.
  • Website personalization based on visitor behaviour.
  • Integration with popular CRM platforms.



$99 per user per month.



"We are using Salespanel for lead scoring purposes in alignment with Pipedrive. It helps us prioritize, which leads to focus and reach out from our end first.


Salespanel is surely a simple and easy-to-use solution for startups like us." - AB180

6 . LeadGeneration.com

🚫 Not rated on G2 


LeadGeneration (WebiMax) is a specialized B2B lead generation agency. They help their B2B businesses to build custom lead generation campaigns on multiple channels.


Some of their solutions include landing page creation, appointment setting and content marketing.


The platform’s team of experts provides personalized support and guidance throughout the whole lead generation process.


Main features:

  • Customized lead generation strategies.
  • Organic website traffic through SEO optimization.
  • Optimized campaigns across multiple channels.
  • Inbound and outbound lead generation methods.



Free consultation. Request a quote after.



“Two years ago, we set out to find the best possible SEO/PPC consultant possible, and after an extensive search, we chose WebiMax. Since then, our qualified lead traffic exploded while our cost per lead went down significantly.” - Carrier

7. Apollo.io

⭐ 4.8 / 5 on G2


Apollo is an all-in-one sales engagement platform for marketing and sales teams


It provides access to accurate contact information and allows users to create targeted outreach campaigns.


The platform combines contact database management, email automation, and analytics to help generate qualified leads, streamline sales processes, and drive revenue growth.


Screenshot of Apollo.ios website(Source: Apollo.io)


Main features: 

  • Automated workflows.
  • Data enrichment.
  • API access.
  • AI-powered analytics.
  • Sales engagement tools.



$49 per user per month.



Victorious, an SEO agency, saw great results by using Apollo. 


They quickly experienced a positive impact on their business. In just one month, they booked 81 more meetings, which was a huge 188% increase. Apollo unlocked a scalable outreach process helping them drive a 10x lift in outbound messaging activity.

8. LeadGenius

⭐ 4.3 / 5 on G2


LeadGenius combines AI and human researchers to support sales and marketing teams in their outbound sales efforts.


They verify email addresses to ensure deliverability and improve the accuracy of contact information.


LeadGenius integrates with popular CRM systems, enabling easy transfer and management of leads.


Main features:

  • Email campaign creation & management services.
  • Engagement monitoring.
  • Personalized datasets.



Not available on their website.



“Within the first 90 days, 3 opportunities were created representing over $3M in processing volume to PayPal” - PayPal


Blog banner CTA - Use Kaspr's 500M+ database of verified contact data

9. Salesloft

⭐ 4.5 / 5 on G2


Salesloft is a sales engagement platform that helps revenue teams close more deals faster. 


Screenshot of Salesloft website(Source: Salesloft)


They offer lead generation solutions like email tracking, cadence management, and analytics to streamline workflows and enhance customer interactions. 


With Salesloft, businesses can optimize sales strategies, improve customer engagement, and track performance metrics to push leads down their sales funnel. 


Main features:

  • Sales cadence and workflow automation.
  • Personalized email templates and tracking.
  • Call and meeting scheduling.
  • Analytics and reporting tools.



Available on request.



Salesloft has helped thousands of customers, such as Uberflip.


The time to execute email campaigns was cut down in half.


“Uberflip generated 60 meetings and 40 net new opportunities. This translated to more than 3000% ROI on pipeline value and a 450% return on closed revenue to date.”



And 6sense saw a huge improvement in their sales cadence optimization using Salesloft.


“Since optimizing their process to focus on a multi-channel cadence strategy, 6sense BDRs now average $700K+ in new pipeline each month, a 2x increase over the team’s baseline.”

10. Upcall

⭐ 4.5 / 5 on G2


Upcall is an outbound calling service that helps sales teams generate B2B leads.


Their team of experts handle the initial outreach and follow-up calls to get qualified appointments booked.


Screenshot of Upcall website(Source: Upcall)


You can integrate Upcall’s own platform with any lead source and monitor your results in real-time. 


Here’s how it works:

  • You forward or upload your leads to Upcall.
  • Upcall engages your leads at the right time with proven scripts.
  • You get the results and the insights to close more deals.


Main features:

  • Outbound call campaign management.
  • Call scripting and recording.
  • Appointment scheduling.
  • Lead qualification and scoring.
  • Analytics and call performance tracking.



Customized packages are available on request.



“Upcall has been a fantastic solution for our needs as a super fast-growing company.” - Airbnb

11. Belkins

4.9/5 on G2


Belkins is a lead generation agency that specializes in providing high-quality leads for businesses across many industries. 


This includes healthcare, consulting, construction and e-learning. 


They offer a wide range of services such as appointment setting, lead research, personalized outreach and email deliverability optimization. 


Main features:

  • Appointment setting.
  • Cold email outreach.
  • CRM consulting.
  • LinkedIn marketing.
  • Sales enablement.


Pricing: Request a quote based on your needs.



Belkins helped many SaaS companies book appointments and achieve quota.


Pairaphrase have seen the following results:


“203 highly qualified appointments were booked in under 17 months. We outperformed the initial KPIs, achieving 150% of the monthly quota. The average open rate reached as high as 84%, while the reply rate was around 16%.”

12. Martal Group

4.6/5 on G2


Martal Group is a Sales-as-a-Service company that helps connect businesses with qualified prospects.


Their team of 200+ sales executives helps clients develop custom lead generation campaigns based on their challenges, goals and preferences. 


Plus, they monitors real-time data to identify leads who are actively searching for your products or services.


Screenshot of Martal Group website(Source: Martial Group)


Main features:

  • Intent data.
  • B2B appointment setting.
  • Lead lists.
  • Email campaigns.
  • Lead nurturing.

Pricing: Book a meeting for a custom price.



Martial Group helped Spin increase the outreach to prospective enterprise companies. They were able to generate 5500 prospect/month. Here’s how:


“Spin were introduced to companies that matched their ideal profile; Martal’s sales team took care of the lead prescreening and qualification, shortlisting selected prospects to schedule a demo call.”

13. Callbox

4.4/5 on G2


Callbox is a global B2B lead generation company.


They bring together different outreach channels to craft a powerful lead generation plan. These include telemarketing, email marketing and social media.


Their extensive in-house B2B database, along with tools for lead nurturing and pipeline management contribute to the success of each campaign. 


Main features:

  • Account-based marketing approach.
  • Database management.
  • Appointment setting.
  • Lead nurturing tools.
  • Email marketing.


Pricing: Available upon request. 



Here’s what a Callbox client reported:


“The company’s ROI increased, thanks to Callbox’s involvement. They achieved more sales and increased the size of their client base. The team worked with the firm in a smooth and seamless manner, providing accurate and detailed reports on leads.” - KOR Creative

14. Snov.io

4.5/5 on G2


Snov.io is an all-in-one email outreach platform.


It includes email list building capabilities, lead generation, email address verification, and warm up for a seamless sales process.


Snov.io also offers a Chrome extension that helps you find email addresses of decision-makers on company websites, LinkedIn profiles, and other online sources.

Graphic showing how to find data on LinkedIn with Snov.io(Source: Snov.io on G2)

Main features:

  • Email finder and verifier.
  • Email warm-up
  • Automated email outreach campaigns.
  • Technology checker.
  • Integrations with HubSpot, Salesforce and more.



Starting price is $30 per user per month. Free trial available.



Snov.Io helped Neadoo find valid email addresses and reach website owners:


“With properly prepared campaigns, the response rate is incredible, usually at 75-80%. Add to this countless hours saved that we usually wasted searching for correct emails.”

15. Lusha

4.3/5 on G2


Lusha is a company that provides B2B data solutions.


It has a Chrome Extension, allowing you to quickly access your prospect’s contact details.


Lusha helps you search for prospects based on criteria like firmographic data, intent signals, and seniority level.


Graphic of Lusha's Extension(Source: Lusha)


Main features:

  • Chrome Extension.
  • Intent data.
  • Data enrichment.
  • List building capabilities.
  • Usage analytics to track performance.



Starting price is $29 per user per month. Free trial available.



“Agent4sales reduces prospecting time from two hours to one minute. Hit and connect rates are now up to 80%. Agent4sales uses Lusha’s accurate B2B data to direct-dial C-suite management and get more buying power from the top chain of command. They now generate 38X more ROI, and the money saved on prospecting is tremendous.” - Agent4sales


16. Operatix


4.5/5 on G2


Operatix is an outsourced SDR agency that serves B2B SaaS vendors across the globe.


They provide a mix of marketing solutions and selling strategies focused on specific accounts. 


When you work with Operatix, you benefit from their experienced sales team who are experts in creating sales opportunities and speeding up revenue growth.


Plus, Operatix has a team that can speak 17 languages. This means they can run campaigns in many regions, including North America, Europe, Latin America, and Asia-Pacific.


Main features:

  • Account-based, multi-touch approach.
  • Account identification.
  • Focus on C-Level outbound activities with tailored messaging for each client.
  • Lead qualification.


Pricing: Contact their team to get the pricing information.




Trend Micro, one of Operatix’s clients gained 9 deals in the forecast in less than 3 months when the project started. They also report a $2.25M generated pipeline.


“Results in the first three months have been impressive and the Operatix agents have developed close working relationships with our enterprise sales team, opening up some sizeable opportunities.”

17. Leadium

4.8/5 on G2


Leadium is another B2B lead generation agency.


The company applies strategies like channel-optimized lead search, omnichannel sales strategy, and top-of-the-funnel consultation to reach your business goals.


With Leadium, B2B marketers and sales teams have a versatile toolkit to connect with their target audience. They can reach out via email, phone, LinkedIn, SMS, and gifts.


Screenshot of Leadium website

(Source: Leadium)


Main features:

  • Outbound appointment setting.
  • Inbound lead management.
  • Channel-optimized lead research.
  • Top-of-funnel consultation.
  • Deliverability and technology implementation.


Pricing: Book a consultation to get the pricing information.



“Our monthly leads have gone up by 3x with Leadium. This allows us to focus on production efficiencies.” - Energy Assurance

18. Cleverly

4.8/5 on G2


Cleverly is a platform that offers AI-driven LinkedIn lead generation services.


It automates the process of connecting with potential clients on LinkedIn, nurturing relationships, and generating leads. 


Additionally, Cleverly uses LinkedIn’s industry feature to pinpoint and connect with the most relevant decision-makers. 


Main features:

  • LinkedIn contact lists and cold outreach sequences.
  • Recruitment services, e.g. candidate list building
  • A/B tested copywriting
  • Zapier integration 




The pricing for their lead generation plan starts at $397 per month. Other services are priced separately.




LeaseLock generated $1 Million in new revenue from Cleverly’s LinkedIn prospecting campaigns.


“By growing our brand recognition on LinkedIn and then executing multi-touch direct outreach campaigns, Cleverly helped us book meetings with hundreds of prospects, resulting in millions in new revenue.” 

19. Pearl Lemon Leads

4.5/5 on G2


Pearl Lemon Leads is a lead generation and marketing agency.


They specialize in generating leads for businesses through various digital marketing strategies. 



Screenshot of Pearl Lemon Leads website

(Source: Pearl Lemon Leads)


These include search engine optimization (SEO), pay-per-click (PPC) advertising, social media marketing, email marketing, and more. 


Plus, Pearl Lemon Leads’ team of experts create cold calling lead generation campaigns from scratch, aligned with your business goals.


Main features:

  • Customized lead generation strategy.
  • Appointment setting services.
  • Outsourcing cold calling activity.
  • Lead tracking and reporting.


Pricing: Contact the sales team to get the pricing information.




One of their satisfied customers says:


“I’m so thankful for the results I got from Pearl Lemon. We hired Deepak Shukla and its team for B2B lead generation services and SEO services for our websites, and within 6-7 months we doubled our growth. If you are looking for an SEO company in London or UK, this is the agency for you.” - Review on Pearl Lemon Leads

20. DiscoverOrg

No rating on G2


DiscoverOrg is a sales intelligence platform and a ZoomInfo company.


This tool offers accurate and actionable data on companies, decision-makers, and industry insights to support B2B sales efforts.


You can manage and enrich lead data, find prospects, define your ICP, and set alerts for trigger events like a lead getting a promotion or changing companies.


Main features:

  • Enrich lead data automatically, syncing with your CRM.
  • Get insights on your Ideal Customer Profile.
  • Trigger alerts for opportunity events. 


Pricing: You can request pricing through their website. 


ROI: No available case studies on their website.


FAQ about B2B lead generation companies

What are B2B lead generation companies?

B2B lead generation companies specialize in helping businesses find potential customers or clients. 


They use various lead generation strategies and tools to identify and qualify leads.


Such as:

  • Cold calling.
  • Email marketing and outreach.
  • Social media marketing.
  • Content marketing.


These companies work closely with their clients to understand their target audience and create effective strategies.


By outsourcing lead generation, businesses can save time and focus on other important tasks.


It’s a cost-effective way to get high-quality leads into your sales funnel.

What is the average cost of a B2B lead?

The cost of a B2B lead can vary based on different factors. These include the industry, target market, lead quality, and if using an agency, the lead generation method used. 


Generally, B2B leads cost more than B2C leads because of the complexity and longer sales cycles involved. 


Depending on these factors, the average cost can range from a few dollars to several hundred dollars or more. 


Considering the potential return on investment (ROI) is crucial when evaluating the cost of B2B leads. Agencies tend to be more expensive as they’re providing a tailored service. But they can be useful if you don’t have a big internal sales team.


B2B data providers are a good and cost-effective way to buy leads. These tools are for sales reps, recruiters and founders to use themselves to find contact data. All-in-one prospecting tools like Kaspr also provide a free version, and the credits used don’t vary based on which leads you’re trying to target.

How to choose a lead generation company?

Choosing a lead generation company requires careful consideration.


Here are a few steps to help you make the right decision:


  1. Experience and expertise. Look for a company that has a proven track record in generating high-quality B2B leads. Check case studies, look on G2 and other review sites to see what their customers are saying.
  2. Compliance. Make sure that the B2B lead generation company follows legal and ethical guidelines, such as data protection regulations. This protects both your business and the privacy of the leads.
  3. Target audience. The company should understand your ideal customer profiles and know how to reach them effectively. They should be able to tailor their strategies to generate leads who want to buy.
  4. Lead quality. Ask about the criteria they use to determine the quality of leads and how they ensure they are relevant to your business.
  5. Transparency and reporting. Choose a company that provides regular and transparent reporting on the progress and results of their lead generation campaigns.
  6. Cost and ROI. Consider the cost of their services in relation to the potential return on investment. While finding a company within your budget is important, focus on the value and quality of leads rather than just the price.
  7. Flexibility and scalability. Assess whether the lead generation company can adapt to your changing needs and scale their efforts with them. A flexible lead generation agency can adjust strategies as your business evolves.

Try Kaspr for free

Deciding between all the B2B lead generation companies out there can be tough. 😓


Still unsure who to go with? 


You can try Kaspr for free today. What’ve you got to lose?! Sign up for free.


Join Kaspr’s community with 100K+ active users getting these benefits:


✅ Unlimited B2B email addresses.
✅ All-in-one prospecting tool.
✅ 500M+ Phone numbers and email addresses.
✅ 200M+ Business profiles.
✅ Free plan with LinkedIn Chrome Extension available.
✅ GDPR and CCPA aligned.
✅ Fully self-service.
✅ Automate outreach.
✅ Credit card free sign-up.


An incredible tool
for sales

It allowed me to find phone numbers and emails of my identified prospects in a few seconds.

Nathaniel Trojman

Blog banner CTA - Kaspr is a lead generation company with a 500M+ database


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