Company lists · Data refreshed September 2026

Top 25 Live chat and engagement software developers based in the United States

Name: Live chat and engagement software developers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 799 companies tracked

RevenueBase identified 799 live chat and engagement software developers headquartered in the United States as of September 2026 and tracks 160,517 professional contacts across them, including 86,589 with verified work emails. San Francisco is the largest hub.

This list covers live chat and engagement software developers headquartered in the United States, 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 28, 2026.

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 28, 2026 86% judged on-target in blind review

799Companies

160,517Contacts tracked

86,589Verified emails

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The 25 largest live chat and engagement software developers based in the United States

Ranked by team size

Top 25 of 799 live chat and engagement software developers based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to live chat and engagement software developers: 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	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	10001+	86,470 contacts →
	Indirect 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 28, 2026
2	Hubspot	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 28, 2026	5,001-10,000	11,077 contacts →
	Partial evidence “HubSpot is a leading agentic customer platform that provides software and support to help businesses grow better.” Source: RevenueBase Database · checked Sep 28, 2026
3	24 7.ai	Partial evidence	Campbell, CA, United StatesHQ checked Sep 28, 2026	10001+	8,461 contacts →
	Partial evidence “24]7.ai™ customer engagement solutions use conversational artificial intelligence to understand customer intent, enabling companies to create personalized, predictive, and…” Source: RevenueBase Database · checked Sep 28, 2026
4	Freshworks	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	7,034 contacts →
	Indirect evidence “Freshworks Inc.(NASDAQ: FRSH) is the AI-powered, unified service operations platform that is fast to deploy, intuitive to use, and enables every employee to be more productive.” Source: RevenueBase Database · checked Sep 28, 2026
5	Ringcentral	Partial evidence	Belmont, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,431 contacts →
	Partial evidence “RingCentral, Inc.(NYSE: RNG) is a global leader in AI–powered customer engagement, delivering an integrated platform for business phone, SMS, contact center, workforce engagement…” Source: RevenueBase Database · checked Sep 28, 2026
6	Twilio	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,047 contacts →
	Partial evidence “Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.” Source: RevenueBase Database · checked Sep 28, 2026
7	Fusion CX	Indirect evidence	Norcross, GA, United StatesHQ checked Sep 28, 2026	10001+	4,785 contacts →
	Indirect evidence “At Fusion CX, we revolutionize customer experience by blending innovative technology and human connection.” Source: RevenueBase Database · checked Sep 28, 2026
8	Five9	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,584 contacts →
	Indirect evidence “Five9 provides a comprehensive suite of CX solutions, powered by Five9 Genius AI, to elevate customer experiences that deliver better business outcomes in the era of The New CX.” Source: RevenueBase Database · checked Sep 28, 2026
9	Nextiva	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,638 contacts →
	Indirect evidence “Build amazing customer experiences with Nextiva’s AI-powered platform.” Source: RevenueBase Database · checked Sep 28, 2026
10	Dialpad	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,473 contacts →
	Indirect evidence “Dialpad is the leading AI-powered communications intelligence platform creating human-first, AI-enhanced solutions that will drive the next wave of how businesses communicate with…” Source: RevenueBase Database · checked Sep 28, 2026
11	Intercom	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,444 contacts →
	Indirect evidence “We’re Intercom, the AI customer service company helping businesses deliver incredible customer experiences at scale.” Source: RevenueBase Database · checked Sep 28, 2026
12	Talkdesk	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,316 contacts →
	Indirect evidence “Talkdesk® is leading a new era in customer experience with Customer Experience Automation (CXA)-a new category and platform designed to automate the full complexity of modern…” Source: RevenueBase Database · checked Sep 28, 2026
13	Unifycx	Indirect evidence	Louisville, KY, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,270 contacts →
	Indirect evidence “UnifyCX is a future-ready, next-generation customer experience platform that fuses the best of human expertise with advanced AI technology.” Source: RevenueBase Database · checked Sep 28, 2026
14	Aircall	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	501-1,000	804 contacts →
	Indirect evidence “The collaborative, AI-powered platform for customer conversations.” Source: RevenueBase Database · checked Sep 28, 2026
15	Khoros	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	501-1,000	763 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 28, 2026
16	Call Center Studio	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	567 contacts →
	Partial evidence “Call Center Studio is an AI-powered, cloud-based contact center software that redefines how businesses engage with their customers.” Source: RevenueBase Database · checked Sep 28, 2026
17	Saas Labs	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 28, 2026	201-500	448 contacts →
	Indirect evidence “SaaS Labs is all about helping sales and support teams reach their full potential.” Source: RevenueBase Database · checked Sep 28, 2026
18	observe.ai	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 28, 2026	201-500	373 contacts →
	Indirect evidence “Observe.AI is the AI Agents platform for customer experience, designed to help organizations deliver faster, smarter, and more efficient customer service at scale.” Source: RevenueBase Database · checked Sep 28, 2026
19	Callminer	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 28, 2026	201-500	320 contacts →
	Indirect evidence “CallMiner is the global leader in AI-powered conversation intelligence and customer experience (CX) automation.” Source: RevenueBase Database · checked Sep 28, 2026
20	Sendbird	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 28, 2026	201-500	297 contacts →
	Indirect evidence “Sendbird is the AI customer experience company.” Source: RevenueBase Database · checked Sep 28, 2026
21	Broadvoice	Indirect evidence	Northridge, CA, United StatesHQ checked Sep 28, 2026	51-200	275 contacts →
	Indirect evidence “Broadvoice makes it easy for companies to connect with their customers.” Source: RevenueBase Database · checked Sep 28, 2026
22	Genesys Interactive Intelligence	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	1,001-5,000	275 contacts →
	Indirect evidence “Genesys acquired Interactive Intelligence in December 2016.” Source: RevenueBase Database · checked Sep 28, 2026
23	Clickatell	Strong evidence	Downtown Redwood City, CA, United StatesHQ checked Sep 28, 2026	201-500	267 contacts →
	Strong evidence “We enable businesses to drive engagement, revenue, and loyalty with AI-powered chat commerce.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kustomer	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	259 contacts →
	Indirect evidence “Kustomer is the Intelligent Customer Experience Platform empowering brands to put customers at the center of every interaction.” Source: RevenueBase Database · checked Sep 28, 2026
25	Paktolus	Indirect evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	201-500	258 contacts →
	Indirect evidence “Paktolus is a transformative technology company that empowers large enterprises and startups to excel in today’s knowledge-based economy.” Source: RevenueBase Database · checked Sep 28, 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: live chat and engagement software developers. 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 live chat and engagement software developers.
Partial evidence: Its own public description names part of live chat and engagement software developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name live chat and engagement software developers. 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 799 live chat and engagement software developers based in the United States

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Live chat and engagement software developers based in the United States at a glance

As of Sep 28, 2026

53.9%Verified-email coverage

200.9Average contacts per company

11-50Median size (employees)

7.0%Largest-city concentration · San Francisco

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

341

11-50

273

51-200

114

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 799 companies.

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 live chat and engagement software developers, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “live chat and engagement software developers”. 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 live chat and engagement software developers), 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 live chat and engagement software developers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 86,589 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 28, 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.

Live chat and engagement software developers by metro

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 live chat and engagement software developers, 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 live chat and engagement software developers are there based in the United States?

RevenueBase identified 799 live chat and engagement software developers headquartered in the United States 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 San Francisco, tops this list with the largest team on record.

Which city has the most live chat and engagement software developers?

San Francisco leads with 56 headquartered companies, followed by New York (53) and Miami (25).

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 86,589 verified decision-maker contacts tracked across these 799 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 28, 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.