Company lists · Data refreshed October 2026

Top 25 Cloud telephony software companies worldwide

RevenueBase identified 2,694 company matches for cloud telephony software companies worldwide as of October 2026 and tracks 61,900 professional contacts across them, including 20,215 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for cloud telephony 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 cloud telephony 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
2,694Companies
61,900Contacts tracked
20,215Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cloud telephony software companies worldwide

Ranked by team size
Top 25 of 2,694 company matches for cloud telephony 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 matchBelmont, CA, United StatesHQ recorded Oct 19, 20265,001-10,0006,655 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 · 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 matchBoston, MA, United StatesHQ recorded Oct 19, 20261,001-5,0002,365 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 · Oct 19, 2026 · View company records in RevenueBase
4Exact 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
5Exact matchBellevue, WA, United StatesHQ recorded Oct 19, 2026501-1,000855 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
6Exact matchBreda, NetherlandsHQ recorded Oct 19, 20261,001-5,000691 contacts →

Exact match

“CM.com (AMS: CMCOM) is a leading European technology company that helps organizations worldwide improve customer interactions through integrated solutions for communications…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchHyderabad, IndiaHQ recorded Oct 19, 20261,001-5,000673 contacts →

Exact match

“Through Tanla Platforms Limited's cloud communications technology, over global enterprises deliver billions of critical customer interactions daily – from vital banking alerts to…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchMumbai, IndiaHQ recorded Oct 19, 2026501-1,000616 contacts →

Exact match

“Route Mobile began as an idea in 2004, founded by our Managing Director, Mr Rajdip Gupta – to bring about digital disruption in communication with simplified solutions that…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchChicago, IL, United StatesHQ recorded Oct 19, 2026n/a615 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 · Oct 19, 2026 · View company records in RevenueBase
10Exact 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
11Exact 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
12Exact matchPalo Alto, CA, United StatesHQ recorded Oct 19, 2026201-500444 contacts →

Exact match

“SaaS Labs is all about helping sales and support teams reach their full potential.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchBracknell, United KingdomHQ recorded Oct 19, 2026501-1,000439 contacts →

Exact match

“Content Guru is a leading global cloud Customer Experience (CX) technology provider and the only ‘challenger’ named in the 2025 Gartner® CCaaS Magic Quadrant™’.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchGurgaon, IndiaHQ recorded Oct 19, 2026501-1,000431 contacts →

Exact match

“Founded in 2010, Real Time Data Services (RTDS) is a group of companies excelling in global information technology, specializing in Cloud Computing and Cloud Telephony.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchLondon, United KingdomHQ recorded Oct 19, 20261,001-5,000417 contacts →

Exact match

“We've moved!”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact 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
17Exact matchAustin, TX, United StatesHQ recorded Oct 19, 2026201-500412 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact 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
19Exact matchNoida, IndiaHQ recorded Oct 19, 2026201-500327 contacts →

Exact match

“MyOperator is a Business AI Operator, a category-defining platform that unifies WhatsApp, calls, and AI-powered chat & voice bots to deliver end-to-end customer communication…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchRio De Janeiro, BrazilHQ recorded Oct 19, 2026201-500323 contacts →

Exact match

“Call / Contact Center Comunicações Unificadas & Colaboração Infraestrutura em TIC Painel Indicador de Performance - informações em tempo real 24x7 para sua gestão Call /Call /…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact 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
22Exact matchКиїв, UkraineHQ recorded Oct 19, 2026501-1,000301 contacts →

Exact match

“Вже 14 років компанія обслуговує широкий спектр клієнтів, включно з малими та середніми бізнесами, а також великими компаніями, забезпечуючи їх усіма необхідними інструментами для…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchSão Paulo, BrazilHQ recorded Oct 19, 2026201-500288 contacts →

Exact match

“Fundada em 2010 por Paulo Godoy, a Olos surgiu como uma startup e carrega o espírito de inovação e superação constantes, sempre focada em oferecer soluções de relacionamento entre…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact matchSan Mateo, CA, United StatesHQ recorded Oct 19, 2026201-500281 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchIndianapolis, IN, United StatesHQ recorded Oct 19, 20261,001-5,000279 contacts →

Exact match

“Genesys acquired Interactive Intelligence in December 2016.”

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

Showing 25 of 2,694 cloud telephony software companies worldwide

See the full list, filter by size, metro and specialty, and access 20,215 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Cloud telephony software companies worldwide at a glance

As of Oct 19, 2026
32.7%Verified-email coverage
23.0Average contacts per company
11-50Median size (employees)
2.6%Largest-city concentration · Sao Paulo
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
977
11-50
1,127
51-200
412
201-500
112
501-1,000
28
1,001-5,000
25
5,001-10,000
2
10001+
4

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 cloud telephony software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “cloud telephony 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 20,215 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.

Cloud telephony software companies by location

16 lists · largest first

Every Cloud telephony 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 “cloud telephony software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cloud telephony software companies are there worldwide?

RevenueBase identified 2,694 company matches for cloud telephony 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?

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

Which country has the most cloud telephony software companies?

The United States leads with 570 companies, followed by India (245) and Brazil (215). Every cloud telephony software companies list by country and city is linked on this page.

Which city has the most cloud telephony software companies?

Sao Paulo leads with 69 company records, followed by London (53) and Singapore (35).

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 20,215 professional contacts with verified work emails tracked across these 2,694 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.

Ready to reach these companies? Verified emails and direct dials for all 2,694 cloud telephony software companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.