Company lists · Data refreshed November 2026

Top 25 Open source marketing agencies worldwide

Name: Open source marketing agencies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 91,017 companies tracked

RevenueBase identified 91,017 company matches for open source marketing agencies worldwide as of November 2026 and tracks 462,806 professional contacts across them, including 67,183 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for open source marketing 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 open source marketing 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

91,017Companies

462,806Contacts tracked

67,183Verified emails

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The 25 largest open source marketing agencies worldwide

Ranked by team size

Top 25 of 91,017 company matches for open source marketing 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	Bank Of The West	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	n/a	5,345 contacts →
	Exact match “We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Marketizon	Exact match	London, United KingdomHQ recorded Nov 6, 2026	n/a	1,989 contacts →
	Exact match “Marketizon is the leader in developing innovative, multi-channel marketing technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Constant Contact	Exact match	Waltham, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,716 contacts →
	Exact match “We deliver for small businesses with powerful tools to simplify and amplify digital marketing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Power Digital Marketing	Exact match	San Diego, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,635 contacts →
	Exact match “Power Digital is a growth marketing firm fueled by technology and driven by a talented team of consultative marketers, creatives, analysts and technologists.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Scorpion	Exact match	Draper, UT, United StatesHQ recorded Nov 6, 2026	501-1,000	1,186 contacts →
	Exact match “Scorpion is the leader in helping local businesses succeed by focusing on what truly matters-driving revenue.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Verticurl A WPP Company	Exact match	SingaporeHQ recorded Nov 6, 2026	1,001-5,000	932 contacts →
	Exact match “Verticurl, a division of Ogilvy, was established in 2006 with the mission to be the world’s leading marketing technology services agency for multinational organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	NP Digital	Exact match	San Diego, United StatesHQ recorded Nov 6, 2026	1,001-5,000	897 contacts →
	Exact match “Neil Patel has been recognized by the Wall Street Journal, Forbes, and the United Nations, to name a few, as one of the most influential and successful marketers and entrepreneurs…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Lucas Group	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 6, 2026	10001+	831 contacts →
	Exact match “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	SEO Discovery Private Limited	Exact match	Mohali, IndiaHQ recorded Nov 6, 2026	201-500	802 contacts →
	Exact match “SEO Discovery is a global leader in next-generation digital marketing services, solutions, and consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Cadastra	Exact match	São Paulo, BrazilHQ recorded Nov 6, 2026	501-1,000	744 contacts →
	Exact match “We are a global company that blends digital marketing services, consulting and technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Abstrakt Marketing Group	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	732 contacts →
	Exact match “We book the qualified meetings that fill your pipeline for any B2B company ready to grow.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Vertis Communications	Exact match	Sussex, WI, United StatesHQ recorded Nov 6, 2026	10001+	710 contacts →
	Exact match “Vertis Communications was acquired by Quad/Graphics in January 2013.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Optimove	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	501-1,000	582 contacts →
	Exact match “Optimove, the creator of Positionless Marketing, frees marketing teams from the limitations of fixed roles, giving every marketer the power to execute any marketing task instantly…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Smart Solutions	Exact match	United StatesHQ recorded Nov 6, 2026	n/a	564 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Mavlers	Exact match	San Jose, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	467 contacts →
	Exact match “At Mavlers, we’re more than just a digital marketing and technology partner-we’re your behind-the-scenes powerhouse.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	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
17	Proweaver	Exact match	PhilippinesHQ recorded Nov 6, 2026	201-500	365 contacts →
	Exact match “Proweaver, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Regicom	Exact match	Paris, FranceHQ recorded Nov 6, 2026	201-500	363 contacts →
	Exact match “REGICOM : 50 ans d’audace et d’innovation au service de la communication digitale locale!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Cognus Technology	Exact match	Udaipur, IndiaHQ recorded Nov 6, 2026	201-500	359 contacts →
	Exact match “Cognus Technology is an innovative digital marketing agency which has expertise and experience based throughout the whole marketing spectrum.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	IT Support	Exact match	Eindhoven, NetherlandsHQ recorded Nov 6, 2026	n/a	352 contacts →
	Exact match “Are you looking for a marketing technology expert- Do you need an independent consultant helping you selecting the right solution in the marketing technology field- Do you need…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	First Page	Exact match	Melbourne, AustraliaHQ recorded Nov 6, 2026	201-500	348 contacts →
	Exact match “When it comes to Digital Marketing, it’s the First Page, or it’s nothing.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Ethinos	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	347 contacts →
	Exact match “As a leading digital marketing agency headquartered in Mumbai, with a strong presence across multiple locations in India and even in Australia, Ethinos brings together creative…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	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
24	Insnap Technologies PVT LTD	Exact match	Bangalore, CA, IndiaHQ recorded Nov 6, 2026	201-500	343 contacts →
	Exact match “With a mission to upgrade the digital marketing industry with profound practical expertise and innovation, InSnap Technologies started its operations in 2018.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Beedigital	Exact match	San Sebastián De Los Reyes, SpainHQ recorded Nov 6, 2026	201-500	336 contacts →
	Exact match “En Beedigital ayudamos a autónomos, microempresas y pymes a crecer y competir de verdad en el mundo digital.” 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 “open source marketing 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 91,017 open source marketing agencies worldwide

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Open source marketing agencies worldwide at a glance

As of Nov 6, 2026

14.5%Verified-email coverage

5.1Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

66,560

11-50

20,738

51-200

2,672

201-500

551

501-1,000

121

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 open source marketing agencies are linked below.
What qualifies: Company records worldwide whose business descriptions match “open source marketing 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 67,183 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.

Open source marketing agencies by location

335 lists · largest first

Every Open source marketing 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 “open source marketing agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many open source marketing agencies are there worldwide?

RevenueBase identified 91,017 company matches for open source marketing 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?

Bank Of The West tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most open source marketing agencies?

The United States leads with 19,284 companies, followed by India (13,624) and the United Kingdom (4,694). Every open source marketing agencies list by country and city is linked on this page.

Which city has the most open source marketing agencies?

London leads with 1283 company records, followed by New Delhi (929) and Dubai (878).

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 67,183 professional contacts with verified work emails tracked across these 91,017 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.

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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.