Company lists · Data verified August 2026

Top 25 Cloud call center software based in the United States

Name: Cloud call center software based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 585 companies tracked

There are 585 cloud call center software headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 30,716 professional contacts across them, including 9,814 with verified work emails and 9,137 with mobile numbers. San Francisco is the largest hub.

This list covers cloud call center software headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

585Companies

30,716Contacts tracked

9,814Verified emails

9,137Mobile numbers

Unlock all 585 companies Free account · no credit card · 2 minutes

The 25 largest cloud call center software based in the United States

Ranked by team size

Top 25 of 585 cloud call center software based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Vonage	Holmdel, NJ	1,001-5,000	3,512	1,736
2	Five9	San Ramon, CA	1,001-5,000	2,578	1,583
3	GOTO	Boston, MA	1,001-5,000	2,325	1,286
4	Infocision Management Corporation	Akron, OH	1,001-5,000	1,773	146
5	Dialamerica	Mahwah, NJ	1,001-5,000	1,537	50
6	Intermedia Intelligent Communications	Sunnyvale, CA	1,001-5,000	1,251	672
7	Answernet	Horsham, PA	501-1,000	892	148
8	The Call Center Doctors	Houston, TX	501-1,000	557	5
9	Global Response	Margate, FL	1,001-5,000	489	33
10	Activus Connect	Orlando, FL	501-1,000	480	71
11	Ansafone Contact Centers	Ocala, FL	501-1,000	429	70
12	phone.com	Poway, CA	201-500	396	52
13	Five Star Call Centers	Sioux Falls, SD	1,001-5,000	312	61
14	Kana Software	Santa Clara, CA	501-1,000	306	23
15	Genesys Interactive Intelligence	Daly City, CA	1,001-5,000	276	84
16	Kustomer	New York, NY	201-500	263	128
17	Convoso	Los Angeles, CA	201-500	246	120
18	Netomi	San Mateo, CA	201-500	237	124
19	Mass Markets	West Des Moines, IA	501-1,000	235	16
20	Livevox	San Francisco, CA	501-1,000	188	88
21	Voip Office	Troy, MI	201-500	165	39
22	Premiere Response	North Bergen, NJ	1,001-5,000	152	19
23	Vcloud	Las Vegas	501-1,000	137	54
24	Noble Systems	Atlanta, GA	501-1,000	132	20
25	Opsify	Kansas City, MO	501-1,000	118	1

Showing 25 of 585 cloud call center software based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,814 reachable decision-makers.

Free account · no credit card

See all 585 companies

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

As of Aug 28, 2026

11-50Median size (employees)

San FranciscoLargest hub · 16 HQs

9,137Contacts with mobile numbers

36Emails re-verified in last 30 days

Companies by employee count

1-10

137

11-50

239

51-200

128

201-500

501-1,000

1,001-5,000

10001+

Cloud call center software by metro

Metro	Companies
Cloud call center software in San Francisco	16
Cloud call center software in New York	15
Cloud call center software in Atlanta	15
Cloud call center software in Miami	14
Cloud call center software in Houston	11
Cloud call center software in Denver	10
Cloud call center software in Los Angeles	10
Cloud call center software in Austin	10

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cloud call center software”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 36 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

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

There are 585 cloud call center software headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Vonage, headquartered in Holmdel, tops this list with the largest team on record.

Which city has the most cloud call center software?

San Francisco leads with 16 headquartered companies, followed by New York (15) and Atlanta (15).

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 9,814 verified decision-maker contacts tracked across these 585 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 585 cloud call center software based in the United States. Start with a free account, no credit card.

Get the full list

Related lists

Cloud call center software by geography

Browse the directory

Browse: Companies home · All United States lists · All Cloud call center software lists · New lists

About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.