Company lists · Data refreshed September 2026

Top 25 Customer expansion platforms worldwide

Name: Customer expansion platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 4,334 companies tracked

RevenueBase identified 4,334 customer expansion platforms worldwide as of September 2026 and tracks 189,964 professional contacts across them, including 98,767 with verified work emails and 50,792 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers customer expansion platforms 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 3, 2026. Country and city lists for customer expansion platforms 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 RevenueBase Smart Search rating on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

4,334Companies

189,964Contacts tracked

98,767Verified emails

50,792Mobile numbers

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The 25 largest customer expansion platforms worldwide

Ranked by team size

Top 25 of 4,334 customer expansion platforms worldwide, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to customer expansion platforms: 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	Salesforce	Strong evidence	London, GB	10001+	85,557 contacts →
	Strong evidence “We're the #1 AI CRM-where humans with agents drive customer success together with AI, data, and Customer 360 apps on one platform.” Source: RevenueBase Database · checked Sep 3, 2026
2	Hubspot	Strong evidence	Amsterdam, NL	5,001-10,000	10,997 contacts →
	Strong evidence “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Source: RevenueBase Database · checked Sep 3, 2026
3	Klaviyo	Indirect evidence	Boston, MA, US	1,001-5,000	2,859 contacts →
	Indirect evidence “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Source: RevenueBase Database · checked Sep 3, 2026
4	DEXYP	Indirect evidence	Dallas, TX, US	1,001-5,000	2,831 contacts →
	Indirect evidence “2019 Thryv, Inc.” Source: RevenueBase Database · checked Sep 3, 2026
5	Zeta Global	Indirect evidence	Nashville, TN, US	1,001-5,000	2,570 contacts →
	Indirect evidence “At Zeta Global (NYSE: ZETA), we help enterprise brands and agencies Achieve the Impossible™ with superintelligent marketing.” Source: RevenueBase Database · checked Sep 3, 2026
6	BRAZE	Strong evidence	London, GB	1,001-5,000	2,133 contacts →
	Strong evidence “Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging.™ Braze allows any marketer to collect and take action on any amount of data from…” Source: RevenueBase Database · checked Sep 3, 2026
7	Constant Contact	Indirect evidence	Gainesville, FL, US	1,001-5,000	1,636 contacts →
	Indirect evidence “We deliver for small businesses with powerful tools to simplify and amplify digital marketing.” Source: RevenueBase Database · checked Sep 3, 2026
8	Stackadapt	Indirect evidence	Toronto, ON, CA	1,001-5,000	1,617 contacts →
	Indirect evidence “StackAdapt is the leading technology company that empowers marketers to reach, engage, and convert audiences with precision.” Source: RevenueBase Database · checked Sep 3, 2026
9	Optimizely	Partial evidence	Gothenburg, SE	1,001-5,000	1,577 contacts →
	Partial evidence “Optimizely is the AI platform for marketing, built for the experience-makers who shape how brands show up in the world.” Source: RevenueBase Database · checked Sep 3, 2026
10	Intuit Mailchimp	Indirect evidence	Oakland, CA, US	1,001-5,000	1,557 contacts →
	Indirect evidence “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Source: RevenueBase Database · checked Sep 3, 2026
11	6sense	Partial evidence	New York, US	1,001-5,000	1,426 contacts →
	Partial evidence “6sense is on a mission to revolutionize the way B2B organizations create revenue by predicting customers most likely to buy and recommending the best course of action to engage…” Source: RevenueBase Database · checked Sep 3, 2026
12	Centro	Indirect evidence	Toronto, ON, CA	501-1,000	1,174 contacts →
	Indirect evidence “Basis Technologies is a global provider of workflow automation, intelligence and programmatic trading software for the marketing enterprise.” Source: RevenueBase Database · checked Sep 3, 2026
13	Uranet Projetos E Sistemas	Indirect evidence	Sao Paulo, BR	5,001-10,000	1,154 contacts →
	Indirect evidence “A Uranet é uma referência no mercado em soluções de relacionamento com o cliente e em projetos que visam vendas de produtos e/ou serviços.” Source: RevenueBase Database · checked Sep 3, 2026
14	Insider	Strong evidence	Istanbul, TürkiyeHQ checked Sep 3, 2026	1,001-5,000	1,036 contacts →
	Strong evidence “Insider-one platform for individualized, cross-channel experiences-enables enterprise marketers to connect customer data across channels and systems, predict their future behavior…” Source: RevenueBase Database · checked Sep 3, 2026
15	Pipedrive	Indirect evidence	CZ	501-1,000	972 contacts →
	Indirect evidence “Founded in 2010, Pipedrive is an easy and effective sales CRM that drives small business growth.” Source: RevenueBase Database · checked Sep 3, 2026
16	BREVO	Strong evidence	Paris, FR	501-1,000	859 contacts →
	Strong evidence “Brevo offers the most intuitive Customer Platform for the sustainable growth of all businesses and organizations (including nonprofits).” Source: RevenueBase Database · checked Sep 3, 2026
17	Activecampaign	Partial evidence	Chicago, IL, US	1,001-5,000	852 contacts →
	Partial evidence “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Source: RevenueBase Database · checked Sep 3, 2026
18	Marigold	Indirect evidence	Nashville, TN, US	201-500	818 contacts →
	Indirect evidence “Marigold is a global marketing technology company focused on delivering relationship marketing solutions for growing organizations.” Source: RevenueBase Database · checked Sep 3, 2026
19	Vendasta	Partial evidence	Boston, MA, US	501-1,000	768 contacts →
	Partial evidence “Vendasta is the leading AI software company for customer acquisition and engagement, helping businesses get more customers.” Source: RevenueBase Database · checked Sep 3, 2026
20	Khoros	Partial evidence	Sydney, AU	501-1,000	768 contacts →
	Partial evidence “Khoros' award-winning enterprise software makes it easier for complex brands to engage with customers at scale across digital, social, and brand-owned channels.” Source: RevenueBase Database · checked Sep 3, 2026
21	Iterable	Strong evidence	London, GB	501-1,000	766 contacts →
	Strong evidence “Iterable is the AI customer engagement platform built for enterprise scale, loved by teams, and trusted by global brands like Priceline, Fabletics, Blockchain, and Box.” Source: RevenueBase Database · checked Sep 3, 2026
22	Applovin	Indirect evidence	Palo Alto, CA, US	201-500	753 contacts →
	Indirect evidence “AppLovin helps businesses of any size reach over a billion people who play mobile games every day.” Source: RevenueBase Database · checked Sep 3, 2026
23	cm.com	Partial evidence	Kt, NL	1,001-5,000	711 contacts →
	Partial evidence “CM.com (AMS: CMCOM) is a global leader in cloud software for conversational commerce that enables businesses to deliver a superior customer experience.” Source: RevenueBase Database · checked Sep 3, 2026
24	Elad Software Systems	Strong evidence	Tel, IL	501-1,000	697 contacts →
	Strong evidence “Elad is Israel’s Preeminent Software Solutions Provider of Customer Engagement Platforms, Digital Transformation Projects, Tools for Workplace Modernization and Professional…” Source: RevenueBase Database · checked Sep 3, 2026
25	Movable INK	Partial evidence	Chicago, IL, US	501-1,000	667 contacts →
	Partial evidence “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Source: RevenueBase Database · checked Sep 3, 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: customer expansion platforms. 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 customer expansion platforms.
Partial evidence: Its own public description names part of customer expansion platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer expansion platforms. 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 4,334 customer expansion platforms worldwide

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Customer expansion platforms worldwide at a glance

As of Sep 3, 2026

52.0%Verified-email coverage

26.7%Mobile-number coverage

43.8Average contacts per company

1-10Median size (employees)

3.7%Largest-city concentration · London

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

2,200

11-50

1,471

51-200

453

201-500

115

501-1,000

1,001-5,000

5,001-10,000

10001+

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 customer expansion platforms, 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: 24 countries, largest first: the United States, India, the United Kingdom, Brazil, Canada, Australia, France, Germany, the Netherlands, Spain and 14 more. Country and city lists for customer expansion platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customer expansion platforms”. 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 customer expansion platforms), 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 customer expansion platforms, 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, 98,767 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 between September 3, 2026 and 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.

Customer expansion platforms by location

36 lists · largest first

Every Customer expansion platforms 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 customer expansion platforms, 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 customer expansion platforms are there worldwide?

RevenueBase identified 4,334 customer expansion platforms 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?

Salesforce, headquartered in London, tops this list with the largest team on record.

Which country has the most customer expansion platforms?

The United States leads with 1,724 companies, followed by India (485) and the United Kingdom (364). Every customer expansion platforms list by country and city is linked on this page.

Which city has the most customer expansion platforms?

London leads with 162 headquartered companies, followed by New York (105) and Sao Paulo (88).

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 98,767 verified decision-maker contacts tracked across these 4,334 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 3, 2026 and 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.