Company lists · Data refreshed September 2026

Top 25 Voip software companies worldwide

Name: Voip software companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 875 companies tracked

RevenueBase identified 875 voip software companies worldwide as of September 2026 and tracks 28,900 professional contacts across them, including 6,978 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers voip software companies worldwide, 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 14, 2026. Country and city lists for voip software companies follow the table.

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 14, 2026 86% judged on-target in blind review

875Companies

28,900Contacts tracked

6,978Verified emails

0Mobile numbers

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The 25 largest voip software companies worldwide

Ranked by team size

Top 25 of 875 voip software companies worldwide, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to voip software companies: 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	AVAYA	Indirect evidence	Morristown, NJ, United StatesHQ checked Sep 14, 2026	5,001-10,000	10,510 contacts →
	Indirect evidence “At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Source: RevenueBase Database · checked Sep 14, 2026
2	GOTO	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,320 contacts →
	Indirect evidence “As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Source: RevenueBase Database · checked Sep 14, 2026
3	Polycom	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,787 contacts →
	Indirect evidence “Plantronics and Polycom are now Poly.” Source: RevenueBase Database · checked Sep 14, 2026
4	Intermedia Intelligent Communications	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	1,254 contacts →
	Indirect evidence “Intermedia is the cloud communications company that helps over businesses connect better, from wherever, through our AI-powered platform that includes voice, video conferencing…” Source: RevenueBase Database · checked Sep 14, 2026
5	Ooma, INC	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 14, 2026	501-1,000	606 contacts →
	Indirect evidence “Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Source: RevenueBase Database · checked Sep 14, 2026
6	Serenova	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	201-500	401 contacts →
	Indirect evidence “Lifesize delivers immersive communication experiences for the global enterprise.” Source: RevenueBase Database · checked Sep 14, 2026
7	phone.com	Indirect evidence	New York, NY, United StatesHQ checked Sep 14, 2026	201-500	398 contacts →
	Indirect evidence “Founded in 2008 by veteran telecommunication entrepreneurs, Phone.com provides over businesses with comprehensive, flexible, and reliable cloud-based communication and…” Source: RevenueBase Database · checked Sep 14, 2026
8	KEYYO	Indirect evidence	Clichy, FranceHQ checked Sep 14, 2026	201-500	319 contacts →
	Indirect evidence “Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.” Source: RevenueBase Database · checked Sep 14, 2026
9	Broadsoft	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 14, 2026	1,001-5,000	252 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 14, 2026
10	Dialogic	Indirect evidence	Parsippany, NJ, United StatesHQ checked Sep 14, 2026	201-500	241 contacts →
	Indirect evidence “A leading cloud-optimized solutions provider for real-time communications media, applications, and infrastructure.” Source: RevenueBase Database · checked Sep 14, 2026
11	Calltower	Indirect evidence	South Jordan, UT, United StatesHQ checked Sep 14, 2026	201-500	226 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 14, 2026
12	Vitel Global	Indirect evidence	South Plainfield, NJ, United StatesHQ checked Sep 14, 2026	51-200	212 contacts →
	Indirect evidence “Communication is the backbone of every business.” Source: RevenueBase Database · checked Sep 14, 2026
13	Hiya INC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	206 contacts →
	Indirect evidence “At Hiya, we are revolutionizing the voice communication experience, making it more productive and secure.” Source: RevenueBase Database · checked Sep 14, 2026
14	Streamwide	Indirect evidence	Paris, FranceHQ checked Sep 14, 2026	51-200	197 contacts →
	Indirect evidence “A major player for 20 years in the critical communications market, STREAMWIDE has successfully developed its Team on mission (mission critical) and Team on the run (business…” Source: RevenueBase Database · checked Sep 14, 2026
15	Vertical Communications	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 14, 2026	201-500	175 contacts →
	Indirect evidence “Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…” Source: RevenueBase Database · checked Sep 14, 2026
16	Bonline	Partial evidence	London, United KingdomHQ checked Sep 14, 2026	51-200	170 contacts →
	Partial evidence “bOnline is UK’s leading provider of VoIP services for micro and small businesses.” Source: RevenueBase Database · checked Sep 14, 2026
17	Voip Office	Partial evidence	Bangalore, United StatesHQ checked Sep 14, 2026	201-500	167 contacts →
	Partial evidence “VoIP Office, founded in 2004, delivers cloud-based communications and hosted PBX solutions for businesses from home offices to enterprises, combining traditional PBX features with…” Source: RevenueBase Database · checked Sep 14, 2026
18	AVOXI	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 14, 2026	51-200	166 contacts →
	Indirect evidence “At AVOXI, we believe that voice conversations are essential for businesses to connect with customers across the globe.” Source: RevenueBase Database · checked Sep 14, 2026
19	Dstny FR	Indirect evidence	Clichy, FranceHQ checked Sep 14, 2026	501-1,000	150 contacts →
	Indirect evidence “Bienvenue dans le monde des communications d’entreprises nouvelles générations : connectées, intelligentes, flexibles et sécurisées.” Source: RevenueBase Database · checked Sep 14, 2026
20	IPCOM	Partial evidence	Miramar, FL, United StatesHQ checked Sep 14, 2026	51-200	142 contacts →
	Partial evidence “IPCOM Network provee Servicios Integrados Virtuales de Comunicación VoIP para reducir costos, aumentar la productividad y la inteligencia de negocios unificando soluciones de CRM…” Source: RevenueBase Database · checked Sep 14, 2026
21	Appitsimple Infotek Pvt. LTD	Indirect evidence	Sarkhej, IndiaHQ checked Sep 14, 2026	51-200	139 contacts →
	Indirect evidence “AppitSimple Infotek Pvt Ltd - A Pioneer product-based IT company that has been revolutionizing & simplifying the way organizations do business since the last many years.” Source: RevenueBase Database · checked Sep 14, 2026
22	Gurusons Communications PVT LTD	Indirect evidence	New Delhi, IndiaHQ checked Sep 14, 2026	51-200	135 contacts →
	Indirect evidence “Gurusons Communications Private Limitedis the most trusted Resource for Voice, Chat, Video and Data communication management solutions in the country.” Source: RevenueBase Database · checked Sep 14, 2026
23	Unified Voice Communication PVT LTD	Partial evidence	Chennai, IndiaHQ checked Sep 14, 2026	51-200	131 contacts →
	Partial evidence “Unifiedvoice is a globally recognized VoIP service and solutions provider.” Source: RevenueBase Database · checked Sep 14, 2026
24	3c Plus	Indirect evidence	Guarapuava, BrazilHQ checked Sep 14, 2026	51-200	124 contacts →
	Indirect evidence “We believe that technology and intelligence, combined, have the power to transform the world.” Source: RevenueBase Database · checked Sep 14, 2026
25	HIHI	Indirect evidence	Christchurch, United KingdomHQ checked Sep 14, 2026	11-50	112 contacts →
	Indirect evidence “HiHi is a leading video-enabled business phone.” Source: RevenueBase Database · checked Sep 14, 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: voip software companies. 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 voip software companies.
Partial evidence: Its own public description names part of voip software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name voip software companies. 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 875 voip software companies worldwide

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Voip software companies worldwide at a glance

As of Sep 14, 2026

24.1%Verified-email coverage

33.0Average contacts per company

11-50Median size (employees)

4.1%Largest-city concentration · London

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

329

11-50

390

51-200

107

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 voip software companies, 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.
Coverage: 10 countries, largest first: the United States, the United Kingdom, India, Brazil, Canada, Germany, the Netherlands, France, Australia, Spain. Country and city lists for voip software companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “voip software companies”. 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 voip software companies), 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 voip software companies, and records with no verified work email.
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, 6,978 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 14, 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.

Voip software companies by location

10 lists · largest first

Every Voip software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 voip software companies, 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 voip software companies are there worldwide?

RevenueBase identified 875 voip software companies worldwide 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?

AVAYA, headquartered in Morristown, tops this list with the largest team on record.

Which country has the most voip software companies?

The United States leads with 430 companies, followed by the United Kingdom (96) and India (76). Every voip software companies list by country and city is linked on this page.

Which city has the most voip software companies?

London leads with 36 headquartered companies, followed by Sao Paulo (20) and New York (18).

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 6,978 verified decision-maker contacts tracked across these 875 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 14, 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.