Company lists · Data refreshed October 2026

Top 25 Communications platform as a service software companies worldwide

RevenueBase identified 1,827 company matches for communications platform as a service software companies worldwide as of October 2026 and tracks 89,600 professional contacts across them, including 28,136 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for communications platform as a service 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 communications platform as a service 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
1,827Companies
89,600Contacts tracked
28,136Verified emails
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The 25 largest communications platform as a service software companies worldwide

Ranked by team size
Top 25 of 1,827 company matches for communications platform as a service 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 matchMorristown, NJ, United StatesHQ recorded Oct 19, 20265,001-10,00011,012 contacts →

Exact match

“At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchSan Jose, CA, United StatesHQ recorded Oct 19, 20265,001-10,0009,834 contacts →

Exact match

“Bring teams together, reimagine workspaces, engage new audiences, and delight your customers –– all on the Zoom AI-first work platform you know and love.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
3Exact 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
4Exact matchSan Francisco, CA, United StatesHQ recorded Oct 19, 20265,001-10,0006,438 contacts →

Exact match

“Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact 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
6Exact 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
7Exact matchCampbell, CA, United StatesHQ recorded Oct 19, 20261,001-5,0002,493 contacts →

Exact match

“8x8, Inc.(NASDAQ: EGHT) believes that CX limits were meant to be shattered.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact 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
9Exact matchSan Jose, CA, United StatesHQ recorded Oct 19, 20261,001-5,0001,894 contacts →

Exact match

“Plantronics and Polycom are now Poly.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchSunnyvale, CA, United StatesHQ recorded Oct 19, 20261,001-5,0001,369 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 · Oct 19, 2026 · View company records in RevenueBase
11Exact 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
12Exact 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
13Exact 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
14Exact 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
15Exact 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
16Exact matchSanta Clara, CA, United StatesHQ recorded Oct 19, 2026501-1,000542 contacts →

Exact match

“Agora (NASDAQ: API) is the global leader in real-time engagement, providing developers with simple, flexible, and powerful APIs to embed real-time conversational AI, voice, video…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
17Exact matchOslo, NorwayHQ recorded Oct 19, 2026501-1,000512 contacts →

Exact match

“LINK Mobility Group AS is a CPaaS provider headquarted in Oslo, Norway.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact 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
19Exact matchMarkham, ON, CanadaHQ recorded Oct 19, 2026201-500464 contacts →

Exact match

“Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
20Exact matchRedmond, WA, United StatesHQ recorded Oct 19, 202610001+436 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 · Oct 19, 2026 · View company records in RevenueBase
21Exact matchAtlanta, GA, United StatesHQ recorded Oct 19, 2026201-500433 contacts →

Exact match

“Fusion Connect delivers innovative, cloud communications services that transform business infrastructure into a foundation for lasting success.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
22Exact matchSingaporeHQ recorded Oct 19, 2026201-500424 contacts →

Exact match

“Knowlarity is the largest provider of cloud based communications solutions to businesses in Southeast Asia and Middle Eastern markets.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchPlano, TX, United StatesHQ recorded Oct 19, 2026201-500421 contacts →

Exact match

“Family owned and proudly based in Plano, Texas, SpectrumVoIP has kept businesses talking and thriving since 2007.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
24Exact 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
25Exact 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

Showing 25 of 1,827 communications platform as a service software companies worldwide

See the full list, filter by size, metro and specialty, and access 28,136 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Communications platform as a service software companies worldwide at a glance

As of Oct 19, 2026
31.4%Verified-email coverage
49.0Average contacts per company
11-50Median size (employees)
2.8%Largest-city concentration · London
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
596
11-50
760
51-200
287
201-500
96
501-1,000
37
1,001-5,000
27
5,001-10,000
10
10001+
7

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 communications platform as a service software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “communications platform as a service 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 28,136 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.

Communications platform as a service software companies by location

11 lists · largest first

Every Communications platform as a service 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 “communications platform as a service software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many communications platform as a service software companies are there worldwide?

RevenueBase identified 1,827 company matches for communications platform as a service 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?

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

Which country has the most communications platform as a service software companies?

The United States leads with 548 companies, followed by India (168) and the United Kingdom (149). Every communications platform as a service software companies list by country and city is linked on this page.

Which city has the most communications platform as a service software companies?

London leads with 51 company records, followed by Singapore (26) and Bangalore (24).

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 28,136 professional contacts with verified work emails tracked across these 1,827 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.