Company lists · Data refreshed September 2026
Top 25 Lead qualification services worldwide
RevenueBase identified 4,522 lead qualification services worldwide as of September 2026 and tracks 36,961 professional contacts across them, including 5,331 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers lead qualification services 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 14, 2026. Country and city lists for lead qualification services 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.
The 25 largest lead qualification services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 806 contacts → | ||||
Indirect evidence “We are innovators, problem solvers, thought leaders, and above all else, a team.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 455 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 387 contacts → | ||||
Partial evidence “TLM empowers businesses to generate revenue through their qualified leads.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 230 contacts → | ||||
Indirect evidence “GROW is a full-service marketing agency passionate about helping B2B companies achieve their goals.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 223 contacts → | ||||
Partial evidence “Founded in 2016 and headquartered in Pensacola, Florida, MarketJoy is a B2B lead generation, appointment generation and sales development partner built to deliver predictable…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 190 contacts → | ||||
Partial evidence “Dynamic Marketing Services was created to cost effectively address the needs of Dealers who want to professionally handle their internet leads as well as their outbound sales and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 185 contacts → | ||||
Partial evidence “Concept develops and implements comprehensive B2B lead generation and sales development solutions for companies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 185 contacts → | ||||
Indirect evidence “We help our clients supercharge their sales.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 148 contacts → | ||||
Indirect evidence “For 15 years, we steadily are providing face to face appointments to keep your sales people busy.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 145 contacts → | ||||
Indirect evidence “Valasys Media, a globally acclaimed company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 137 contacts → | ||||
Partial evidence “It's not about flooding your sales team with leads.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 124 contacts → | ||||
Partial evidence “Boom Demand is an Lead Generation & Customer Acquisition powerhouse that will help you increase revenue and grow your customer base.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 123 contacts → | ||||
Indirect evidence “First Connect Digital (FCD) is a collective of seasoned marketing and business professionals with decades of leadership experience with leading global media companies and brands.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 122 contacts → | ||||
Indirect evidence “B2B Media Group helps B2B marketing and sales teams turn demand into action.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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 services. 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 services.
- Partial evidence
- Its own public description names part of lead qualification services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name lead qualification services. 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 4,522 lead qualification services worldwide
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Lead qualification services worldwide at a glance
As of Sep 14, 2026Companies by employee count
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 services, 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
- 17 countries, largest first: the United States, India, the United Kingdom, Canada, France, Australia, the Netherlands, Brazil, Germany, Spain and 7 more. Country and city lists for lead qualification services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “lead qualification services”. 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 services), 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 services, 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, 5,331 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 14, 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 services by location
35 lists · largest firstEvery Lead qualification services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Lead qualification services based in the United States1,942
- Lead qualification services based in India658
- Lead qualification services based in the United Kingdom542
- Lead qualification services based in Canada210
- Lead qualification services based in France187
- Lead qualification services based in Australia178
- Lead qualification services based in the Netherlands140
- Lead qualification services based in Brazil125
- Lead qualification services based in Germany102
- Lead qualification services based in Spain79
- Lead qualification services based in the Philippines76
- Lead qualification services based in the United Arab Emirates72
- Lead qualification services based in South Africa53
- Lead qualification services based in Italy46
- Lead qualification services based in Israel44
- Lead qualification services based in Poland40
- Lead qualification services based in Belgium28
Cities
- Lead qualification services based in London, United Kingdom193
- Lead qualification services based in Pune, India164
- Lead qualification services based in New York, United States90
- Lead qualification services based in Paris, France73
- Lead qualification services based in Miami, United States58
- Lead qualification services based in Sheridan, United States57
- Lead qualification services based in Los Angeles, United States54
- Lead qualification services based in San Francisco, United States53
- Lead qualification services based in Toronto, Canada49
- Lead qualification services based in Sao Paulo, Brazil47
- Lead qualification services based in Austin, United States42
- Lead qualification services based in Sydney, Australia40
- Lead qualification services based in Las Vegas, United States38
- Lead qualification services based in Manchester, United Kingdom36
- Lead qualification services based in San Diego, United States31
- Lead qualification services based in Dallas, United States30
- Lead qualification services based in Chicago, United States28
- Lead qualification services based in Montreal, Canada28
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 services, 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 services are there worldwide?
RevenueBase identified 4,522 lead qualification services 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 services?
The United States leads with 1,942 companies, followed by India (658) and the United Kingdom (542). Every lead qualification services list by country and city is linked on this page.
Which city has the most lead qualification services?
London leads with 194 headquartered companies, followed by Pune (164) and New York (91).
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 5,331 verified decision-maker contacts tracked across these 4,522 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 14, 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.