Company lists · Data refreshed September 2026

Top 25 B2B sales development services worldwide

Name: B2B sales development services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 20,421 companies tracked

RevenueBase identified 20,421 B2B sales development services worldwide as of September 2026 and tracks 144,970 professional contacts across them, including 19,792 with verified work emails. The United States is the largest market and London the largest hub.

This list covers B2B sales development 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 27, 2026. Country and city lists for B2B sales development 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

20,421Companies

144,970Contacts tracked

19,792Verified emails

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The 25 largest B2B sales development services worldwide

Ranked by team size

Top 25 of 20,421 B2B sales development services worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to B2B sales development services: 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	Xdbs Worldwide	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 27, 2026	1,001-5,000	3,498 contacts →
	Indirect evidence “At XDBS, we primarily work with media agencies, publishers and marketing companies looking to leverage marketing automation and digital marketing capacity and capability to…” Source: RevenueBase Database · checked Sep 27, 2026
2	Marketstar	Strong evidence	Ogden, UT, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,446 contacts →
	Strong evidence “MarketStar is a global B2B sales outsourcing leader with 38+ years of experience driving predictable revenue growth.” Source: RevenueBase Database · checked Sep 27, 2026
3	Webhelp Enterprise	Strong evidence	Paris, FranceHQ checked Sep 27, 2026	10001+	1,795 contacts →
	Strong evidence “The Concentrix B2B sales practice is here to design, build and run projects for our clients.” Source: RevenueBase Database · checked Sep 27, 2026
4	Memoryblue	Partial evidence	Tysons, VA, United StatesHQ checked Sep 27, 2026	501-1,000	825 contacts →
	Partial evidence “memoryBlue is the go-to partner for revenue leaders in B2B Tech looking to grow their pipeline engine.” Source: RevenueBase Database · checked Sep 27, 2026
5	ZAZ Vendas	Indirect evidence	Campinas, BrazilHQ checked Sep 27, 2026	501-1,000	796 contacts →
	Indirect evidence “Em um mercado cada vez mais competitivo, onde a eficiência em vendas massificadas e externas é um desafio constante, a ZAZ Vendas surge como a resposta definitiva.” Source: RevenueBase Database · checked Sep 27, 2026
6	Abstrakt Marketing Group	Partial evidence	St Louis, MO, United StatesHQ checked Sep 27, 2026	501-1,000	724 contacts →
	Partial evidence “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Source: RevenueBase Database · checked Sep 27, 2026
7	Salebuild	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 27, 2026	n/a	708 contacts →
	Partial 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 27, 2026
8	Flexisales INC	Partial evidence	Las Vegas, NV, United StatesHQ checked Sep 27, 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 27, 2026
9	Girnar Care	Indirect evidence	Jaipur, IndiaHQ checked Sep 27, 2026	501-1,000	649 contacts →
	Indirect evidence “We at Girnar Care work towards customer satisfaction and it is also a center of customer excellence.” Source: RevenueBase Database · checked Sep 27, 2026
10	Telenet Marketing Solutions	Partial evidence	Athens, GA, IndiaHQ checked Sep 27, 2026	201-500	553 contacts →
	Partial evidence “From initial market awareness to the final stages of a complex B2B buying journey, modern buyers crave authentic interaction.” Source: RevenueBase Database · checked Sep 27, 2026
11	Movingdneedle Pvt. LTD	Partial evidence	Sterling Heights, MI, United StatesHQ checked Sep 27, 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 27, 2026
12	The Pipeline Group	Partial evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	201-500	523 contacts →
	Partial evidence “The Pipeline Group helps B2B tech companies scale pipeline fast through our SDR-as-a-Service model.” Source: RevenueBase Database · checked Sep 27, 2026
13	Callbox INC	Indirect evidence	Encino, CA, United StatesHQ checked Sep 27, 2026	201-500	499 contacts →
	Indirect 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 27, 2026
14	Infoanalytica, INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	201-500	482 contacts →
	Strong evidence “InfoAnalytica is a B2B sales acceleration partner for mid-market and enterprise companies.” Source: RevenueBase Database · checked Sep 27, 2026
15	Demandshore	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	501-1,000	478 contacts →
	Strong evidence “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Source: RevenueBase Database · checked Sep 27, 2026
16	Saleshive	Indirect evidence	Denver, CO, United StatesHQ checked Sep 27, 2026	51-200	455 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
17	Qualifa	Partial evidence	Brighton, United KingdomHQ checked Sep 27, 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 27, 2026
18	Alliance Pdms	Indirect evidence	Hurst, TX, United StatesHQ checked Sep 27, 2026	51-200	428 contacts →
	Indirect evidence “Alliance is a domestically operated, internationally recognized professional contact center specializing in lead generation and appointment setting.” Source: RevenueBase Database · checked Sep 27, 2026
19	Amarketforce	Partial evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	201-500	391 contacts →
	Partial evidence “aMarketForce is a full-scale B2B Contact Database & Demand Generation services company.” Source: RevenueBase Database · checked Sep 27, 2026
20	The Lead Market	Indirect evidence	Nagpur, IndiaHQ checked Sep 27, 2026	51-200	387 contacts →
	Indirect evidence “TLM empowers businesses to generate revenue through their qualified leads.” Source: RevenueBase Database · checked Sep 27, 2026
21	Beyond Codes INC	Strong evidence	Simi Valley, CA, United StatesHQ checked Sep 27, 2026	201-500	380 contacts →
	Strong 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 27, 2026
22	EBQ	Partial evidence	Austin, TX, United StatesHQ checked Sep 27, 2026	201-500	377 contacts →
	Partial evidence “EBQ is an outsourced sales and marketing organization that provides services to help companies scale.” Source: RevenueBase Database · checked Sep 27, 2026
23	FUNNL	Strong evidence	Philadelphia, United StatesHQ checked Sep 27, 2026	201-500	349 contacts →
	Strong evidence “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Source: RevenueBase Database · checked Sep 27, 2026
24	Freelan	Indirect evidence	Huixquilucan, MexicoHQ checked Sep 27, 2026	n/a	340 contacts →
	Indirect evidence “En Freelan, creemos que el crecimiento sostenible no es fruto del azar, sino de un sistema bien diseñado.” Source: RevenueBase Database · checked Sep 27, 2026
25	Jumpcrew	Partial evidence	Nashville, TN, United StatesHQ checked Sep 27, 2026	201-500	339 contacts →
	Partial evidence “Launch-ready sales teams, experienced leaders, and time-tested processes to help you acquire new customers faster and with less risk than doing it alone.” Source: RevenueBase Database · checked Sep 27, 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: B2B sales development 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 B2B sales development services.
Partial evidence: Its own public description names part of B2B sales development services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B sales development 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 20,421 B2B sales development services worldwide

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B2B sales development services worldwide at a glance

As of Sep 27, 2026

13.7%Verified-email coverage

7.1Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

14,350

11-50

4,653

51-200

1,080

201-500

242

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 B2B sales development 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: Every country. Country and city lists for B2B sales development services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “B2B sales development 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 B2B sales development 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 B2B sales development 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, 19,792 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 27, 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.

B2B sales development services by location

84 lists · largest first

Every B2B sales development services 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 B2B sales development 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 B2B sales development services are there worldwide?

RevenueBase identified 20,421 B2B sales development 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?

Xdbs Worldwide, headquartered in Dubai, tops this list with the largest team on record.

Which country has the most B2B sales development services?

The United States leads with 4,354 companies, followed by the United Kingdom (1,627) and India (1,405). Every B2B sales development services list by country and city is linked on this page.

Which city has the most B2B sales development services?

London leads with 559 headquartered companies, followed by Pune (355) and Paris (235).

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 19,792 verified decision-maker contacts tracked across these 20,421 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 27, 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.