Company lists · Data refreshed September 2026

Top 25 Customer engagement platform companies based in the United States

Name: Customer engagement platform companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,738 companies tracked

RevenueBase identified 1,738 company matches for customer engagement platform companies associated with the United States as of September 2026 and tracks 60,811 professional contacts across them, including 23,649 with verified work emails and 17,885 with mobile numbers. New York is the largest hub.

This list covers company matches for customer engagement platform companies associated with the United States, 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 September 1, 2026.

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 Sep 1, 2026 How this list was built

1,738Companies

60,811Contacts tracked

23,649Verified emails

17,885Mobile numbers

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The 25 largest customer engagement platform companies based in the United States

Ranked by team size

Top 25 of 1,738 company matches for customer engagement platform companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 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	CSG	Exact match	Fort Worth, TX, United States	5,001-10,000	5,915 contacts →
	Exact match “CSG is a leader in innovative customer engagement, revenue management and payments solutions that make ordinary customer experiences extraordinary.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2	Klaviyo	Exact match	Boston, MA, United States	1,001-5,000	2,859 contacts →
	Exact match “Klaviyo (NYSE: KVYO) is the autonomous B2C CRM.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3	THRYV	Exact match	Dallas, TX, United States	1,001-5,000	2,430 contacts →
	Exact match “Thryv is an AI-powered platform built to help small businesses get found, win customers, and drive repeat sales.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4	Sitecore	Exact match	Manchester, NH, United States	1,001-5,000	1,765 contacts →
	Exact match “Sitecore creates digital experiences so powerful they connect the world.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5	Intuit Mailchimp	Exact match	Oakland, CA, United States	1,001-5,000	1,557 contacts →
	Exact match “The Mailchimpossibilities are endless when you create, automate, and optimize your marketing with Mailchimp.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6	Podium	Exact match	Lehi, UT, United States	1,001-5,000	1,453 contacts →
	Exact match “A few years back, Eric (Co-Founder and CEO) got a frustrated call from his dad.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7	6sense	Exact match	New York, United States	1,001-5,000	1,426 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8	Demandscience	Exact match	Boston, United States	1,001-5,000	1,080 contacts →
	Exact match “With proprietary data and omni-channel activation like events, content, programmatic and chat, we cut through the noise to reach entire buyer groups, driving engagement and impact…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9	Activecampaign	Exact match	Chicago, IL, United States	1,001-5,000	852 contacts →
	Exact match “ActiveCampaign is the AI-first autonomous marketing platform built to transform how marketers, agencies, and entrepreneurs work.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10	Vendasta	Exact match	Boston, MA, United States	501-1,000	768 contacts →
	Exact match “Vendasta is the leading AI software company for customer acquisition and engagement, helping businesses get more customers.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11	Movable INK	Exact match	Chicago, IL, United States	501-1,000	667 contacts →
	Exact match “Movable Ink helps marketers create more relevant customer experiences across email, mobile, and web through data activation, AI-powered decisioning, and personalization at scale.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12	Bond Brand Loyalty	Exact match	Denver, CO, United States	501-1,000	610 contacts →
	Exact match “Bond is the customer-intelligence driven engagement company.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13	PIANO	Exact match	Philadelphia, PA, United States	501-1,000	603 contacts →
	Exact match “Piano is the digital analytics and subscription management platform that empowers businesses to understand their audience, orchestrate journeys, and grow revenue.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14	Adobe Marketo	Exact match	Atlanta, GA, United States	1,001-5,000	570 contacts →
	Exact match “Adobe Marketo Engage offers the leading Engagement Platform that empowers marketers to build brand value, grow revenue, and prove impact.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15	Analytic Partners	Exact match	Miami, FL, United States	501-1,000	561 contacts →
	Exact match “Analytic Partners is the leader in Commercial Analytics.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16	Moneypenny	Exact match	Charleston, SC, United States	1,001-5,000	538 contacts →
	Exact match “Moneypenny is the leading customer conversations partner to businesses across the UK and US, blending exceptional people with proprietary AI technology to deliver trusted caller…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17	Acoustic	Exact match	Waltham, MA, United States	501-1,000	532 contacts →
	Exact match “Acoustic, L.P.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18	Treasure AI	Exact match	New York, NY, United States	501-1,000	503 contacts →
	Exact match “Treasure AI is the Agentic Experience Platform built for modern marketing teams.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19	Team Velocity	Exact match	Herndon, VA, United States	501-1,000	459 contacts →
	Exact match “Team Velocity is revolutionizing the automotive industry with technology that digitizes the car buying and vehicle ownership processes.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20	DOXIM	Exact match	New York, United States	501-1,000	433 contacts →
	Exact match “Doxim is the customer communications management and engagement technology leader serving highly regulated markets, including financial services, utilities and healthcare.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21	Liquidhub	Exact match	Wayne, PA, United States	1,001-5,000	429 contacts →
	Exact match “LiquidHub is a Capgemini company.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22	HCL Unica	Exact match	Sunnyvale, CA, United States	10001+	380 contacts →
	Exact match “Collaborate, innovate and drive the business forward with HCLSoftware's Digital Transformation marketing software solution.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23	CSLLC	Exact match	Springfield, MO, United States	1,001-5,000	326 contacts →
	Exact match “Communication Solutions, LLC (CSLLC) is a premier provider of Business to Business and Business to Consumer customer engagement services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24	Aspen Marketing	Exact match	Irving, TX, United States	5,001-10,000	281 contacts →
	Exact match “Aspen Marketing Services was acquired by Epsilon, an all-encompassing global marketing innovator, in 2011.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25	Genesys Interactive Intelligence	Exact match	Daly City, CA, United States	1,001-5,000	276 contacts →
	Exact match “Genesys acquired Interactive Intelligence in December 2016.” Recorded in the RevenueBase company graph · Sep 1, 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 “customer engagement platform companies”. 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 1,738 customer engagement platform companies based in the United States

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Customer engagement platform companies based in the United States at a glance

As of Sep 1, 2026

38.9%Verified-email coverage

29.4%Mobile-number coverage

35.0Average contacts per company

11-50Median size (employees)

9.0%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

746

11-50

631

51-200

251

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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.
What qualifies: Company records associated with the United States whose business descriptions match “customer engagement platform companies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 23,649 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 September 1, 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.

Customer engagement platform companies by metro

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 “customer engagement platform companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many customer engagement platform companies are there based in the United States?

RevenueBase identified 1,738 company matches for customer engagement platform companies associated with the United States as of September 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?

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

Which city has the most customer engagement platform companies?

New York leads with 157 company records, followed by San Francisco (98) and Boston (42).

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 23,649 professional contacts with verified work emails tracked across these 1,738 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 September 1, 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.