Company lists · Data refreshed November 2026

Top 25 B2B sem agencies worldwide

Name: B2B sem agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 29,531 companies tracked

RevenueBase identified 29,531 company matches for B2B sem agencies worldwide as of November 2026 and tracks 218,451 professional contacts across them, including 38,111 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for B2B sem agencies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for B2B sem agencies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

29,531Companies

218,451Contacts tracked

38,111Verified emails

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The 25 largest B2B sem agencies worldwide

Ranked by team size

Top 25 of 29,531 company matches for B2B sem agencies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Xdbs Worldwide	Exact match	Dubai, United Arab EmiratesHQ recorded Nov 6, 2026	1,001-5,000	3,609 contacts →
	Exact match “At XDBS, we primarily work with media agencies, publishers and marketing companies looking to leverage marketing automation and digital marketing capacity and capability to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Webhelp Enterprise	Exact match	Paris, FranceHQ recorded Nov 6, 2026	10001+	1,824 contacts →
	Exact match “The Concentrix B2B sales practice is here to design, build and run projects for our clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	2x	Exact match	Malvern, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,103 contacts →
	Exact match “2X is the global leader in B2B marketing-as-a-service (MaaS), a subscription-based alternative to traditional B2B marketing delivery models.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Quadcubes	Exact match	Kozhikode, IndiaHQ recorded Nov 6, 2026	n/a	1,056 contacts →
	Exact match “We're not that yet another, ordinary marketing agency!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Machbizz Marketers PVT LTD	Exact match	Pune, DE, IndiaHQ recorded Nov 6, 2026	501-1,000	1,009 contacts →
	Exact match “MachBizz is a mission itself with a strong urge to accomplish its vision of B2B Digital Marketing and lead generation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Logical Position	Exact match	Lake Oswego, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	907 contacts →
	Exact match “Logical Position (LP) is an Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Ziff Davis Performance Marketing	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	884 contacts →
	Exact match “ZDPM is the coming together of Salesify and DemandShore.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	SEO INC	Exact match	Carlsbad, CA, United StatesHQ recorded Nov 6, 2026	n/a	838 contacts →
	Exact match “Since its inception in 1997, SEO Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Anteriad	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	757 contacts →
	Exact match “Data Driven.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Flexisales INC	Exact match	Las Vegas, NV, United StatesHQ recorded Nov 6, 2026	201-500	736 contacts →
	Exact match “Flexisales, is a global frontrunner in B2B Lead & Demand Generation and Data Services, serving technology companies & agencies worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Salebuild	Exact match	Redwood City, CA, United StatesHQ recorded Nov 6, 2026	n/a	725 contacts →
	Exact match “Salesify, a leading provider of B2B demand generation services, helps our clients create pipeline and accelerate revenue by identifying, profiling, nurturing and connecting with…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Imark Infotech Pvt. LTD	Exact match	Chandigarh, IndiaHQ recorded Nov 6, 2026	201-500	720 contacts →
	Exact match “With a vision of delivering innovative solutions through cutting-edge technology, Mr.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Kestone	Exact match	Mohan Cooperative Industrial, United Arab EmiratesHQ recorded Nov 6, 2026	201-500	666 contacts →
	Exact match “We’re a 28 years old B2B marketing agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Multiview	Exact match	Irving, ON, United StatesHQ recorded Nov 6, 2026	501-1,000	665 contacts →
	Exact match “Multiview is a digital media and marketing company helping three types of organizations grow: associations building non-dues revenue, B2B advertisers reaching a verified…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Techmagnate	Exact match	New Delhi, IndiaHQ recorded Nov 6, 2026	201-500	577 contacts →
	Exact match “Techmagnate is a leading, award-winning digital marketing agency.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Iresearch Services	Exact match	New York, United StatesHQ recorded Nov 6, 2026	201-500	511 contacts →
	Exact match “We get it.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Demandshore	Exact match	San Francisco, United StatesHQ recorded Nov 6, 2026	501-1,000	490 contacts →
	Exact match “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Ebrandz LLP	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	434 contacts →
	Exact match “Within a short span, eBrandz has seen enormous growth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Localedge	Exact match	Buffalo, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	401 contacts →
	Exact match “LocalEdge, a Hearst Media Services Company, offers a full suite of online advertising products and services for any size business and budget across the country.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Online Marketing Gurus	Exact match	Crows Nest, TX, United StatesHQ recorded Nov 6, 2026	51-200	376 contacts →
	Exact match “Online Marketing Gurus (OMG) is an award-winning Leading Digital Marketing Agency, with locations in Australia, USA, UAE & Singapore.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	KPL Tech Solution Pvt. LTD	Exact match	Middletown, DE, United StatesHQ recorded Nov 6, 2026	201-500	368 contacts →
	Exact match “Do you want to see your business on heights?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Acceligize	Exact match	Houston, United StatesHQ recorded Nov 6, 2026	201-500	361 contacts →
	Exact match “Acceligize is a global B2B marketing company, providing full funnel lead generation and content marketing solutions to some of the world’s finest technology companies, media…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Marketbridge	Exact match	Bethesda, MD, United StatesHQ recorded Nov 6, 2026	201-500	360 contacts →
	Exact match “Marketbridge partners with B2B leaders to create unified Go-to-Market® systems by connecting strategy, AI, creativity, activation and measurement.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Outerbox	Exact match	Akron, OH, United StatesHQ recorded Nov 6, 2026	201-500	346 contacts →
	Exact match “At OuterBox, we believe growth is oxygen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	FUNNL	Exact match	Philadelphia, United StatesHQ recorded Nov 6, 2026	201-500	344 contacts →
	Exact match “FunnL was built on a revolutionary idea: B2B companies don’t need more leads-they need more qualified sales meetings with decision-makers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “B2B sem agencies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 29,531 B2B sem agencies worldwide

See the full list, filter by size, metro and specialty, and access 38,111 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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B2B sem agencies worldwide at a glance

As of Nov 6, 2026

17.4%Verified-email coverage

7.4Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

19,515

11-50

8,120

51-200

1,393

201-500

299

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for B2B sem agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “B2B sem agencies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 38,111 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

B2B sem agencies by location

147 lists · largest first

Every B2B sem agencies 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “B2B sem agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many B2B sem agencies are there worldwide?

RevenueBase identified 29,531 company matches for B2B sem agencies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Xdbs Worldwide tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most B2B sem agencies?

The United States leads with 6,248 companies, followed by India (5,087) and the United Kingdom (1,921). Every B2B sem agencies list by country and city is linked on this page.

Which city has the most B2B sem agencies?

London leads with 598 company records, followed by Pune (483) and New Delhi (411).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 38,111 professional contacts with verified work emails tracked across these 29,531 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 29,531 B2B sem agencies worldwide. Start with a free account, no credit card.

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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 SmartSearch, 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.