Company lists · Data refreshed September 2026

Top 25 Lead qualification companies worldwide

Name: Lead qualification companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 6,968 companies tracked

RevenueBase identified 6,968 lead qualification companies worldwide as of September 2026 and tracks 49,990 professional contacts across them, including 6,430 with verified work emails. The United States is the largest market and London the largest hub.

This list covers lead qualification companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for lead qualification companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

6,968Companies

49,990Contacts tracked

6,430Verified emails

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The 25 largest lead qualification companies worldwide

Ranked by team size

Top 25 of 6,968 lead qualification companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to lead qualification companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Cience	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	201-500	1,068 contacts →
	Partial evidence “CIENCE Technologies, Inc, founded in 2015 and headquartered in Denver, CO, is a pioneering global company in lead generation software and services, committed to transforming the…” Source: RevenueBase Database · checked Sep 21, 2026
2	S2w Media	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	806 contacts →
	Indirect evidence “We are innovators, problem solvers, thought leaders, and above all else, a team.” Source: RevenueBase Database · checked Sep 21, 2026
3	Salebuild	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 21, 2026	n/a	708 contacts →
	Indirect evidence “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Source: RevenueBase Database · checked Sep 21, 2026
4	Flexisales INC	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 21, 2026	201-500	697 contacts →
	Partial evidence “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
5	Cognism	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	201-500	530 contacts →
	Indirect evidence “Cognism provides accurate, compliant-first B2B data and sales intelligence for teams growing across Europe and beyond.” Source: RevenueBase Database · checked Sep 21, 2026
6	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 21, 2026	51-200	528 contacts →
	Partial evidence “movingDneedle is a Business to Business Sales Lead Generation Company that provides fast and scalable, sales qualified leads through its unique Personalized Email Marketing…” Source: RevenueBase Database · checked Sep 21, 2026
7	Callbox INC	Partial evidence	Encino, CA, United StatesHQ checked Sep 21, 2026	201-500	499 contacts →
	Partial evidence “Callbox is the #1 trusted lead generation services and AI-Powered Growth Strategy Partner by enterprise and scaling businesses in the USA, Canada, Asia Pacific, Latin America…” Source: RevenueBase Database · checked Sep 21, 2026
8	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
9	Qualifa	Partial evidence	Brighton, United KingdomHQ checked Sep 21, 2026	51-200	440 contacts →
	Partial evidence “We are an award winning multilingual lead generation and market research service provider for B2B publishing, marketing, events and tech companies.” Source: RevenueBase Database · checked Sep 21, 2026
10	The Lead Market	Partial evidence	Nagpur, IndiaHQ checked Sep 21, 2026	51-200	387 contacts →
	Partial evidence “TLM empowers businesses to generate revenue through their qualified leads.” Source: RevenueBase Database · checked Sep 21, 2026
11	Beyond Codes INC	Partial evidence	Simi Valley, CA, United StatesHQ checked Sep 21, 2026	201-500	380 contacts →
	Partial evidence “Beyond Codes is a global B2B lead generation and appointment-setting agency trusted by some of the world's leading technology companies to build enterprise sales pipeline.” Source: RevenueBase Database · checked Sep 21, 2026
12	Algominds	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	n/a	358 contacts →
	Indirect evidence “At Algominds, we build AI agents that find you customers who already want to buy.” Source: RevenueBase Database · checked Sep 21, 2026
13	Callrail	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	201-500	332 contacts →
	Partial evidence “CallRail is the lead engagement platform that makes it easy for businesses to attract more leads, convert more customers, and optimize their marketing.” Source: RevenueBase Database · checked Sep 21, 2026
14	Lahaus	Partial evidence	Medellín, ColombiaHQ checked Sep 21, 2026	51-200	292 contacts →
	Partial evidence “Un solo sistema corre tus ads, habla con tus leads y te entrega clientes listos para cerrar.” Source: RevenueBase Database · checked Sep 21, 2026
15	Calltend INC	Strong evidence	Los Angeles, TX, United StatesHQ checked Sep 21, 2026	51-200	289 contacts →
	Strong evidence “Current Vertical Focus: Real Estate - Lead Generation, Lead Conversion, Lead Qualification, Agent Recruiting Mortgage - Lead Conversion, Lead Qualification Insurance - Lead…” Source: RevenueBase Database · checked Sep 21, 2026
16	leads.io	Partial evidence	Hoorn, NetherlandsHQ checked Sep 21, 2026	201-500	253 contacts →
	Partial evidence “Leads.io is the World’s Leading AI-Powered Lead Generation Agency, founded on a performance-based pay-per-lead model.” Source: RevenueBase Database · checked Sep 21, 2026
17	Rocket Connections	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	247 contacts →
	Indirect evidence “Rocket Connections is a sales and support platform specializing in contact center services.” Source: RevenueBase Database · checked Sep 21, 2026
18	Only B2B Lead Generation & Marketing	Indirect evidence	Pune, IndiaHQ checked Sep 21, 2026	201-500	208 contacts →
	Indirect evidence “We are Only B2B – Your reliable growth partner!” Source: RevenueBase Database · checked Sep 21, 2026
19	Leadguru	Partial evidence	Bucharest, RomaniaHQ checked Sep 21, 2026	n/a	208 contacts →
	Partial evidence “LEADGURU is a Digital Agency that focuses on Done-For-You Lead Generation services.” Source: RevenueBase Database · checked Sep 21, 2026
20	SM Services	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 21, 2026	n/a	187 contacts →
	Indirect evidence “Fundada em 2005, a SM Services é especializada em prospecção de mercado para vendas consultivas, oferecendo ao mercado diversos tipos de serviços geração de oportunidades de…” Source: RevenueBase Database · checked Sep 21, 2026
21	Concept Services	Partial evidence	Copley, OH, United StatesHQ checked Sep 21, 2026	51-200	185 contacts →
	Partial evidence “Concept develops and implements comprehensive B2B lead generation and sales development solutions for companies.” Source: RevenueBase Database · checked Sep 21, 2026
22	Interlink	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	51-200	185 contacts →
	Indirect evidence “We help our clients supercharge their sales.” Source: RevenueBase Database · checked Sep 21, 2026
23	Dealfront	Partial evidence	Karlsruhe, GermanyHQ checked Sep 21, 2026	51-200	172 contacts →
	Partial evidence “Dealfront announced it will unify under the Leadfeeder brand, repositioning the company as a lead generation platform built around the B2B marketer’s most strategic asset: the…” Source: RevenueBase Database · checked Sep 21, 2026
24	Lead Capital Group	Partial evidence	Cape Town, South AfricaHQ checked Sep 21, 2026	201-500	161 contacts →
	Partial evidence “Lead Capital Group is a forward-thinking international sales and marketing company based in Cape Town.” Source: RevenueBase Database · checked Sep 21, 2026
25	Dealforce	Indirect evidence	United StatesHQ checked Sep 21, 2026	n/a	155 contacts →
	Indirect evidence “At DealForce, we drive sales calls on a pay for performance model with interested, target market prospects.$0 upfront.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: lead qualification companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names lead qualification companies.
Partial evidence: Its own public description names part of lead qualification companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name lead qualification companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 6,968 lead qualification companies worldwide

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Lead qualification companies worldwide at a glance

As of Sep 21, 2026

12.9%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

2.3%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

4,296

11-50

2,006

51-200

514

201-500

109

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among lead qualification companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for lead qualification companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “lead qualification companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names lead qualification companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among lead qualification companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 6,430 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Lead qualification companies by location

27 lists · largest first

Every Lead qualification companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names lead qualification companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many lead qualification companies are there worldwide?

RevenueBase identified 6,968 lead qualification companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Cience, headquartered in Miami, tops this list with the largest team on record.

Which country has the most lead qualification companies?

The United States leads with 1,832 companies, followed by India (631) and the United Kingdom (474). Every lead qualification companies list by country and city is linked on this page.

Which city has the most lead qualification companies?

London leads with 162 headquartered companies, followed by Pune (154) and New York (96).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 6,430 verified decision-maker contacts tracked across these 6,968 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.