Company lists · Data refreshed October 2026

Top 25 International calling software companies worldwide

RevenueBase identified 2,082 company matches for international calling software companies worldwide as of October 2026 and tracks 38,050 professional contacts across them, including 9,459 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for international calling software companies worldwide, 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 October 19, 2026. Country and city lists for international calling software companies follow the table.

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 Oct 19, 2026 How this list was built
2,082Companies
38,050Contacts tracked
9,459Verified emails
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The 25 largest international calling software companies worldwide

Ranked by team size
Top 25 of 2,082 company matches for international calling software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 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 matchKanata, ON, CanadaHQ recorded Oct 19, 20261,001-5,0003,629 contacts →

Exact match

“Powering more than 2 billion connections every day, Mitel helps businesses connect, collaborate and take care of customers.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchHolmdel, NJ, United StatesHQ recorded Oct 19, 20261,001-5,0003,595 contacts →

Exact match

“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact matchOr Yehuda, IsraelHQ recorded Oct 19, 20261,001-5,0001,446 contacts →

Exact match

“AudioCodes Ltd.(NASDAQ, TASE: AUDC) is a global leader in enterprise voice technology and voice AI innovation.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
4Exact matchXiamen, ChinaHQ recorded Oct 19, 20261,001-5,000796 contacts →

Exact match

“Yealink (Stock Code: 300628) is a global brand that specializes in video conferencing, voice communications and collaboration solutions with best-in-class quality, innovative…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchSunnyvale, CA, United StatesHQ recorded Oct 19, 2026501-1,000636 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 · Oct 19, 2026 · View company records in RevenueBase
6Exact matchHyderabad, IndiaHQ recorded Oct 19, 2026201-500532 contacts →

Exact match

“Telecom Applications are one of the fastest-changing technologies of today.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchMiguel Hidalgo, MexicoHQ recorded Oct 19, 2026501-1,000511 contacts →

Exact match

“Somos C3NTRO, una empresa mexicana de clase mundial con 15 años de experiencia en Telecomunicaciones.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Oct 19, 2026201-500415 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 · Oct 19, 2026 · View company records in RevenueBase
9Exact matchSingaporeHQ recorded Oct 19, 2026201-500342 contacts →

Exact match

“Founded in 2003, today REVE Systems is a global software solutions provider leading in Class 4 & Class 5 Softswitch, Voice, Video & Messaging App, SMS Platform, Cloud Contact…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchClichy, FranceHQ recorded Oct 19, 2026201-500321 contacts →

Exact match

“Keyyo développe de nouveaux usages de communication pour les entreprises, notamment avec la voix sur IP.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchParsippany, NJ, United StatesHQ recorded Oct 19, 2026201-500270 contacts →

Exact match

“A leading cloud-optimized solutions provider for real-time communications media, applications, and infrastructure.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchGaithersburg, MD, United StatesHQ recorded Oct 19, 20261,001-5,000246 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 · Oct 19, 2026 · View company records in RevenueBase
13Exact matchSouth Jordan, UT, United StatesHQ recorded Oct 19, 2026201-500241 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 · Oct 19, 2026 · View company records in RevenueBase
14Exact matchLas Vegas, NV, United StatesHQ recorded Oct 19, 2026201-500216 contacts →

Exact match

“NUWAVE Communications is a leading provider of innovative telecommunications solutions.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchParis, FranceHQ recorded Oct 19, 202651-200209 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchSeattle, WA, United StatesHQ recorded Oct 19, 202651-200207 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchMoscow, RussiaHQ recorded Oct 19, 2026201-500186 contacts →

Exact match

“Манго Телеком» – разработчик облачных решений для бизнес-коммуникаций.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchTempe, AZ, United StatesHQ recorded Oct 19, 2026201-500177 contacts →

Exact match

“Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchMarseille, FranceHQ recorded Oct 19, 2026201-500176 contacts →

Exact match

“EVEN MEDIA INTERACTIVE is a computer software company based out of 12 BOULEVARD D ATHENES, MARSEILLE, France.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchNoida, United StatesHQ recorded Oct 19, 2026201-500175 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchAtlanta, GA, United StatesHQ recorded Oct 19, 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 · Oct 19, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Oct 19, 202651-200161 contacts →

Exact match

“bOnline is UK’s leading provider of VoIP services for micro and small businesses.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchNicosia, CyprusHQ recorded Oct 19, 202651-200155 contacts →

Exact match

“3CX is the developer of an open standards communications solution which innovates business connectivity and collaboration, replacing proprietary PBXs.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchPensacola, FL, United StatesHQ recorded Oct 19, 2026n/a155 contacts →

Exact match

“Super Technologies, Inc.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchMiramar, FL, United StatesHQ recorded Oct 19, 202651-200153 contacts →

Exact match

“IPCOM Network provee Servicios Integrados Virtuales de Comunicación VoIP para reducir costos, aumentar la productividad y la inteligencia de negocios unificando soluciones de CRM…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 2,082 international calling software companies worldwide

See the full list, filter by size, metro and specialty, and access 9,459 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International calling software companies worldwide at a glance

As of Oct 19, 2026
24.9%Verified-email coverage
18.3Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
758
11-50
905
51-200
301
201-500
58
501-1,000
21
1,001-5,000
22
5,001-10,000
4
10001+
6

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for international calling software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “international calling 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. 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 9,459 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 October 19, 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.

International calling software companies by location

13 lists · largest first

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

Countries

Cities

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 “international calling software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many international calling software companies are there worldwide?

RevenueBase identified 2,082 company matches for international calling software companies worldwide as of October 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?

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

Which country has the most international calling software companies?

The United States leads with 490 companies, followed by the United Kingdom (142) and India (110). Every international calling software companies list by country and city is linked on this page.

Which city has the most international calling software companies?

London leads with 58 company records, followed by Sao Paulo (35) and Singapore (27).

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 9,459 professional contacts with verified work emails tracked across these 2,082 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 October 19, 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.