The Top B2B Lead Generation Companies in 2025

Last updated: April 10, 2025

Our team recently analyzed 80+ B2B lead generation companies, ranking them on 7 weighted factors:

• Notable Clients (25%): A history of successful work performed for high profile clients is a strong indicator of lead generation expertise, and is the highest weighted factor in our algorithm.
• Year Established (15%): Lead generation companies that have weathered one or more economic downturns have demonstrated their ability to procure leads for their clients in less-than-ideal market conditions.
• Leadership Experience & Founder Status (20%): Leadership sets the culture and direction of a company, so we favor companies founded by experienced marketers.
• Median Employee Tenure (10%): Companies with longer employee tenures have more opportunities to develop their personnel’s skillsets
• Average Review Score (15%): A normalized average of the reviews of each company that were left by clients on 3rd party websites such as Clutch and G2.
• Media References (5%): The smallest factor in our ranking, we estimated the number of times each company has been cited by media or other high authority online publications.
• Specialty (10%): Lead generation can take many forms. We favor companies that specialize in reliable lead generation channels that result in high ROI for their clients.

The below table shares the results of our analysis.

The Top B2B Lead Generation Companies in 2025

Rank	Company	Established	Founder Led	Leadership Experience Score	Average Review Score	Median Employee Tenure	Media References	Notable Clients	Specialty
1	First Page Sage	2009	Yes	5.0	4.9	4.3 years	~770	Salesforce, Verisign, Equinix	Long-Term Organic Lead Generation
2	CIENCE	2015	Yes	4.7	4.8	3.6 years	~720	Okta, Shutterstock	Outsourced SDR Teams
3	Belkins	2017	Yes	4.9	4.7	2.2 years	~460	ValueLabs, Shelby Williams	International Lead Generation
4	Uplead	2017	Yes	4.6	4.6	2.3 years	~590	SimScale GmbH, Crealytics	B2B Leads Database & Prospecting Tool
5	Launch Leads	2009	Yes	4.3	4.4	7.3 years	~50	Mercato, Mindshare	Email Lead Generation
6	Callbox	2004	Yes	4.0	4.2	2.4 years	~150	Acer, Toshiba, LexisNexis	Outsourced Call Center
7	Ziff Davis Performance Marketing	2006	No	4.2	4.1	3.3 years	~40	N/A	Tech-Focused ABM
8	The ABM Agency	2007	Yes	4.0	4.5	1.7 years	~20	Baker Hughes, Akeneo, CareMetx	ABM and Demand Generation

First Page Sage – for Organic Lead Generation

Rather than selling unvetted lead lists, First Page Sage builds long-term, organic lead generation systems for their B2B clients using a combination of thought leadership content and SEO strategy. Their campaigns prioritize ROI through investing in low cost per lead channels. First Page Sage has extensive experience in a variety of B2B industries, ranging from Manufacturing to Agtech to Finance.

• Location: San Francisco, CA
• Founded: 2009
• Price Range: $$$
• Services offered: Inbound Lead Generation, Thought Leadership SEO, Web Development, Demand Generation
  

  Summary of Online Reviews

  First Page Sage is “head and shoulders above other SEO firms in delivering low CAC leads,” constantly striving for excellence in its “blend of thought leadership and SEO”; however, clients who want a quick marketing solution “will need some patience” as their strategy focuses on the medium to long term.

CIENCE – for Outsourced SDR Services

CIENCE is a Denver-based lead generation company that specializes in providing SDR teams for their clients. These teams focus their attention on prospect qualification, ensuring that the leads they provide are actually relevant to their clients’ products. Because of this, CIENCE partners well with companies that have limited sales staffing, but can afford the cost of hiring an outside SDR team.

• Location: Denver, CO
• Founded: 2015
• Price Range: $$$
• Services offered: People-as-a-Service, Lead Qualification, Appointment Setting
  

  Summary of Online Reviews

  CIENCE keeps “open lines of communication” and “are highly efficient”, with “consistently impressive cold emailing open rates”. Their “high turnover rate” can lead to “spotty” customer service, however.

Belkins — for International Lead Generation

International lead generation requires intimate knowledge of the business culture of multiple countries. Belkins is an expert in this difficult but valuable field, and has conducted successful lead generation campaigns for global brands across North and South America, Europe, and Australia.

• Location: Dover, DE
• Founded: 2017
• Price Range: $$$
• Services offered: Appointment Setting, Lead Research, Email Deliverability Optimization, International Lead Generation
  

  Summary of Online Reviews

  Belkin consistently “delivers above expectations” with an approach that leads to their clients being “trusted by highly relevant customers”. They offer a “high level of engagement” but their “pricing is quite expensive.”

Uplead — for a B2B Leads Database & Prospecting Tool

For companies that have strong sales departments, Uplead offers a deep collection of potential leads as well as a SaaS platform to help salespeople narrowly target desired demographics. Their software allows their customers to find leads using a comprehensive array of search criteria, filtering them by industry,  job title, location, company size, and a host of other factors. Uplead’s services are a good fit for companies with sales teams that are comfortable finding their own leads in an extensive database.

• Location: Covina, CA
• Founded: 2017
• Price Range: $$
• Services offered: B2B Prospecting, Email Verification
  

  Summary of Online Reviews

  Uplead provides “very good results” for their clients, with data that is “both accurate and up-to-date.” Their platform is “intuitive”, with “great pricing” that makes their product “very affordable.”

Launch Leads — for Email Lead Generation

Launch Leads specializes in creating segmented contact lists to help their clients’ email marketing efforts. They also offer advertising, cold-calling, and social media services, as well as content generation for overburdened marketing and sales teams. Their clients are most often SaaS businesses, but they have a wide range of industry experience.

• Location: Salt Lake City, UT
• Founded: 2009
• Price Range: $$
• Services offered: Email List Creation, Email Nurturing, Lead Revival
  

  Summary of Online Reviews

  Launch Leads is a “passionate” lead generation partner with “amazing follow through”. They engage deeply with their clients’ products to the point where they could “be considered experts”, but can be “a little slow” to work out scheduling for their clients.

Callbox — Outsourced Call Center

Callbox focuses almost entirely on phone-based lead generation services, making them a good fit for more traditionally-oriented industries. They also offer limited phone-based ABM and  lead nurturing to help convert leads into MQLs and SQLs for your sales team, but these services are often more expensive than a content-based nurturing campaign.

• Location: Los Angeles, CA
• Founded: 2004
• Price Range: $$
• Additional services offered: B2B Lead Generation, ABM, International Lead Generation
  

  Summary of Online Reviews

  Callbox is “an amazing resource” with “top-notch” customer service and “efficient” processes. They offer “plentiful and useful feedback”, acting as “truly an extension of” their clients’ sales teams.

Ziff Davis Performance Marketing — for Tech-Focused ABM

Ziff Davis Performance Marketing focuses entirely on technology companies, leveraging ABM to target high value leads for their clients. They maintain a proprietary database that their teams use to strategically profile potential customers in order to prioritize the highest ROI prospects. Because of their ABM focus and cost, they are best suited for larger businesses that focus on providing services for enterprise clients.

• Location: Austin TX 
• Founded: 2006
• Price Range: $$$$
• Additional services offered: B2B Lead Generation, ABM, International Lead Generation
  
  

  Summary of Online Reviews

  Ziff Davis is “good for prospecting”, and offers SDR teams that “amplify sales efforts” for their clients. Their “extensive onboarding” allows their teams to generate “quality” leads, but this same onboarding process leads to a “long ramp up period”.

The ABM Agency — for ABM and Demand Generation

The ABM Agency takes an ABM-centric approach to lead generation but with a focus on targeting buyers across multiple channels, including email, PPC, social media, and retargeted display ads. As an ABM-focused agency, they are best suited as a partner for companies in industries with a few very high-value clients.

• Location: Atlanta, GA
• Founded: 2007
• Price Range: $$$
• Additional services offered: PPC, Content Marketing
  
  

  Summary of Online Reviews

  The ABM agency has been successful in helping clients “grow and solidify” themselves as “authorities in their industry”. They have demonstrated the ability to not only generate leads, but also “execute campaigns that result in better ROI”.

The Top B2B Lead Generation Companies in the US, by Industry

Our team has researched the top B2B lead generation companies for each of the following industries:

• SaaS
• Manufacturing
• Real Estate
• Fintech & Financial Services

The full reports may be found in the links above, and the top 5 agencies for each industry, as well as their industry reputation score, are listed below: