Company lists · Data refreshed September 2026

Top 25 Cloud-based call center software companies based in the United States

RevenueBase identified 330 company matches for cloud-based call center software companies associated with the United States as of September 2026 and tracks 17,464 professional contacts across them, including 6,745 with verified work emails. San Francisco is the largest hub.

This list covers company matches for cloud-based call center software 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 27, 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 27, 2026 How this list was built
330Companies
17,464Contacts tracked
6,745Verified emails
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The 25 largest cloud-based call center software companies based in the United States

Ranked by team size
Top 25 of 330 company matches for cloud-based call center software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBelmont, CA, United StatesHQ recorded Sep 27, 20265,001-10,0006,431 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchNew York, NY, United StatesHQ recorded Sep 27, 2026501-1,000804 contacts →

Exact match

“The collaborative, AI-powered platform for customer conversations.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchChicago, IL, United StatesHQ recorded Sep 27, 202651-200567 contacts →

Exact match

“Call Center Studio is an AI-powered, cloud-based contact center software that redefines how businesses engage with their customers.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 27, 2026501-1,000561 contacts →

Exact match

“We build fully managed call centers: Software build outs Hiring Training Integrations”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
5Exact matchSanta Ana, CA, United StatesHQ recorded Sep 27, 2026501-1,000431 contacts →

Exact match

“About : Ansafone is the leading outsourced contact center solution provider for companies in the US and Canada and maintains international alliances for global reach.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchAustin, TX, United StatesHQ recorded Sep 27, 2026201-500401 contacts →

Exact match

“Lifesize delivers immersive communication experiences for the global enterprise.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchSanta Clara, CA, United StatesHQ recorded Sep 27, 2026501-1,000307 contacts →

Exact match

“KANA understands the value of great Customer Service experiences.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 2026201-500286 contacts →

Exact match

“UJET is the Experience Center: a cloud-native platform that replaces the fragmented contact center stack.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchHerndon, VA, United StatesHQ recorded Sep 27, 202651-200285 contacts →

Exact match

“Ultatel delivers a powerful yet easy-to-use cloud communications suite that scales with your business-combining voice, SMS, chat, video, online fax, and contact center…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchIndianapolis, IN, United StatesHQ recorded Sep 27, 20261,001-5,000275 contacts →

Exact match

“Genesys acquired Interactive Intelligence in December 2016.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 27, 2026201-500259 contacts →

Exact match

“Kustomer is the Intelligent Customer Experience Platform empowering brands to put customers at the center of every interaction.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchSt. George, UT, United StatesHQ recorded Sep 27, 2026201-500246 contacts →

Exact match

“A leader in the hosted contact center technology industry since TCN, Inc.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchSan Mateo, CA, United StatesHQ recorded Sep 27, 2026201-500241 contacts →

Exact match

“Netomi is the enterprise agentic CX platform built for the world's most complex environments.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchLos Angeles, CA, United StatesHQ recorded Sep 27, 2026201-500241 contacts →

Exact match

“Convoso is an AI-powered contact center platform built for revenue teams and customer engagement organizations expanding into outbound growth.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchSan Jose, CA, United StatesHQ recorded Sep 27, 202651-200228 contacts →

Exact match

“Hiver is an AI-native customer service platform built for complex, high-stakes support with cross-team collaboration, automation, and AI that can take on even the hardest requests.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchSouth Jordan, UT, United StatesHQ recorded Sep 27, 2026201-500226 contacts →

Exact match

“Since 2002, CallTower has been at the forefront of transforming global communication, emerging as a leader in enterprise-class cloud communication, collaboration, and CX solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchChicago, IL, United StatesHQ recorded Sep 27, 202651-200214 contacts →

Exact match

“For over thirty years, Fortune 500 companies in financial services, retail and hospitality, software, and wireless communications industries have relied on Vail Systems’…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchRockville, MD, United StatesHQ recorded Sep 27, 202651-200191 contacts →

Exact match

“3CLogic transforms customer and employee experiences with its leading Cloud Contact Center and Voice AI capabilities purpose-built to enhance today's leading CRM and Customer…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, CA, United StatesHQ recorded Sep 27, 2026501-1,000187 contacts →

Exact match

“LiveVox (Nasdaq: LVOX) is a proven cloud CCaaS platform that helps business leaders redefine customer engagement and transform their contact center’s performance.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchRoswell, GA, United StatesHQ recorded Sep 27, 202651-200187 contacts →

Exact match

“NovelVox is the execution layer for regulated CX.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 202651-200166 contacts →

Exact match

“At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchTempe, AZ, United StatesHQ recorded Sep 27, 202651-200143 contacts →

Exact match

“Crexendo®, Inc.(NASDAQ:CXDO) is an award-winning premier provider of Unified Communications as a Service (UCaaS), Call Center as a Service (CCaaS), communication platform software…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchAustin, TX, United StatesHQ recorded Sep 27, 202651-200140 contacts →

Exact match

“Close is the sales CRM built for founders, startups, and small businesses that want to grow faster.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchLas Vegas, United StatesHQ recorded Sep 27, 2026501-1,000136 contacts →

Exact match

“VCloud Interactive: Redefining Contact Center and Communications with AI and Cloud Technology VCloud Interactive, a subsidiary of VoiceCloud LLC, has been at the forefront of…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchLos Angeles, CA, United StatesHQ recorded Sep 27, 202651-200133 contacts →

Exact match

“GoContact is a native Cloud Contact Center Service (CCaaS) solution, with integrated omnichannel and artificial intelligence solutions.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 330 cloud-based call center software companies based in the United States

See the full list, filter by size, metro and specialty, and access 6,745 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cloud-based call center software companies based in the United States at a glance

As of Sep 27, 2026
38.6%Verified-email coverage
52.9Average contacts per company
11-50Median size (employees)
4.5%Largest-city concentration · San Francisco
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
72
11-50
139
51-200
84
201-500
21
501-1,000
9
1,001-5,000
2
5,001-10,000
1
10001+
2

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 330 companies.

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 “cloud-based call center software 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 6,745 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 27, 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.

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 “cloud-based call center software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cloud-based call center software companies are there based in the United States?

RevenueBase identified 330 company matches for cloud-based call center software 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?

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

Which city has the most cloud-based call center software companies?

San Francisco leads with 15 company records, followed by New York (14) and Atlanta (12).

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 6,745 professional contacts with verified work emails tracked across these 330 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 27, 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.