Company lists · Data refreshed September 2026

Top 25 Voice over ip software companies based in the United States

RevenueBase identified 271 company matches for voice over ip software companies associated with the United States as of September 2026 and tracks 7,692 professional contacts across them, including 2,951 with verified work emails. New York is the largest hub.

This list covers company matches for voice over ip 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 29, 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 29, 2026 How this list was built
271Companies
7,692Contacts tracked
2,951Verified emails
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The 25 largest voice over ip software companies based in the United States

Ranked by team size
Top 25 of 271 company matches for voice over ip software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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 matchBoston, MA, United StatesHQ recorded Sep 29, 20261,001-5,0002,320 contacts →

Exact match

“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSunnyvale, CA, United StatesHQ recorded Sep 29, 20261,001-5,0001,254 contacts →

Exact match

“Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSunnyvale, CA, United StatesHQ recorded Sep 29, 2026501-1,000606 contacts →

Exact match

“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchRedmond, WA, United StatesHQ recorded Sep 29, 202610001+423 contacts →

Exact match

“The next generation of Skype from Microsoft gives you better ways to chat, call, and plan fun things to do with the people in your life every day.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Sep 29, 2026201-500398 contacts →

Exact match

“Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchGaithersburg, MD, United StatesHQ recorded Sep 29, 20261,001-5,000252 contacts →

Exact match

“BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSeattle, WA, United StatesHQ recorded Sep 29, 202651-200206 contacts →

Exact match

“At Hiya, we are revolutionizing the voice communication experience, making it more productive and secure.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchWilmington, DE, United StatesHQ recorded Sep 29, 202611-50112 contacts →

Exact match

“KOL Telecom is the leading innovator of small business Voice over IP (VoIP) Phone services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchSarasota, FL, United StatesHQ recorded Sep 29, 2026201-500103 contacts →

Exact match

“Founded in 2006 in Sarasota, Florida, Star2Star Communications delivers the World's Leading Hybrid Cloud Communications Solution.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchDover, DE, United StatesHQ recorded Sep 29, 202651-20085 contacts →

Exact match

“GVenture is a leading VoIP solution development, web application development and mobile application development company over globe and offshore development center at Delhi India.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchCherry Hill, NJ, United StatesHQ recorded Sep 29, 202651-20083 contacts →

Exact match

“Powering Your Companies Voice & More Utilizing the latest technologies in voice such as VoIP (Voice-Over-Internet-Protocol) and other networking technologies, we can provide your…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchHuntsville, AL, United StatesHQ recorded Sep 29, 202651-20058 contacts →

Exact match

“Digium®, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchSunnyvale, CA, United StatesHQ recorded Sep 29, 202611-5057 contacts →

Exact match

“2600Hz modernizes the way businesses communicate with KAZOO-a cloud-based unified communications solution.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchLouisville, KY, United StatesHQ recorded Sep 29, 2026n/a55 contacts →

Exact match

“West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchSanta Clara, CA, United StatesHQ recorded Sep 29, 202651-20037 contacts →

Exact match

“Nevotek provides value-added business communications solutions using the highly programmable, IP-based unified communications platform as a springboard for its innovative product…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchSanta Barbara, CA, United StatesHQ recorded Sep 29, 202651-20034 contacts →

Exact match

“D2 is the market leader in software platforms that power IP communications equipment and mobile phone.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchNashua, NH, United StatesHQ recorded Sep 29, 202611-5032 contacts →

Exact match

“Unified Office is a leading communications technology company, constantly innovating to help its business customers and channel partners stay ahead in a rapidly changing world.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchEncinitas, CA, United StatesHQ recorded Sep 29, 202651-20028 contacts →

Exact match

“For over 15 years, Telcentris Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchSandy, UT, United StatesHQ recorded Sep 29, 202611-5025 contacts →

Exact match

“Their Upgrade is Our Standard At Simplii we believe in giving you more for your money.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchCambridge, MA, United StatesHQ recorded Sep 29, 2026501-1,00024 contacts →

Exact match

“ThinkingPhones is now Fuze.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchWilmington, DE, United StatesHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“VoxSun Telecom, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchKirkland, WA, United StatesHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“G12 Communications is a cloud-based provider of next generation IP communication services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchIrving, TX, United StatesHQ recorded Sep 29, 202611-5022 contacts →

Exact match

“Greenlink is a cloud based business phone service.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchCharlotte, NC, United StatesHQ recorded Sep 29, 202611-5020 contacts →

Exact match

“RingFree equips small and large businesses with customizable Unified Communications with stand-out customer support.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchColumbus, OH, United StatesHQ recorded Sep 29, 202611-5019 contacts →

Exact match

“Accent is an award-winning provider of cloud phone system, team communication & messaging, video meetings, and cloud contact center.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 271 voice over ip software companies based in the United States

See the full list, filter by size, metro and specialty, and access 2,951 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Voice over ip software companies based in the United States at a glance

As of Sep 29, 2026
38.4%Verified-email coverage
28.4Average contacts per company
11-50Median size (employees)
4.1%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
100
11-50
120
51-200
37
201-500
7
501-1,000
2
1,001-5,000
3
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 271 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 “voice over ip 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 2,951 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 29, 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 “voice over ip software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many voice over ip software companies are there based in the United States?

RevenueBase identified 271 company matches for voice over ip 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?

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

Which city has the most voice over ip software companies?

New York leads with 11 company records, followed by Miami (7) and Houston (5).

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 2,951 professional contacts with verified work emails tracked across these 271 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 29, 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.