Company lists · Data refreshed September 2026

Top 25 Cloud communication platforms worldwide

Name: Cloud communication platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 2,214 companies tracked

RevenueBase identified 2,214 cloud communication platforms worldwide as of September 2026 and tracks 88,341 professional contacts across them, including 25,677 with verified work emails. The United States is the largest market and London the largest hub.

This list covers cloud communication platforms 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 27, 2026. Country and city lists for cloud communication platforms 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 27, 2026 86% judged on-target in blind review

2,214Companies

88,341Contacts tracked

25,677Verified emails

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The 25 largest cloud communication platforms worldwide

Ranked by team size

Top 25 of 2,214 cloud communication platforms worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to cloud communication platforms: 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 27, 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 27, 2026
2	ZOOM	Partial evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	5,001-10,000	9,706 contacts →
	Partial evidence “Bring teams together, reimagine workspaces, engage new audiences, and delight your customers –– all on the Zoom AI-first work platform you know and love.” Source: RevenueBase Database · checked Sep 27, 2026
3	Ringcentral	Partial evidence	Belmont, CA, United StatesHQ checked Sep 27, 2026	5,001-10,000	6,431 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
4	MITEL	Indirect evidence	Kanata, ON, CanadaHQ checked Sep 27, 2026	1,001-5,000	3,442 contacts →
	Indirect evidence “Powering more than 2 billion connections every day, Mitel helps businesses connect, collaborate and take care of customers.” Source: RevenueBase Database · checked Sep 27, 2026
5	Vonage	Partial evidence	Holmdel, NJ, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,429 contacts →
	Partial evidence “We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Source: RevenueBase Database · checked Sep 27, 2026
6	GOTO	Strong evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,320 contacts →
	Strong 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 27, 2026
7	Polycom	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,787 contacts →
	Indirect evidence “Plantronics and Polycom are now Poly.” Source: RevenueBase Database · checked Sep 27, 2026
8	Intermedia Intelligent Communications	Strong evidence	Sunnyvale, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,254 contacts →
	Strong 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 27, 2026
9	Integra	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 27, 2026	501-1,000	1,133 contacts →
	Indirect evidence “Integra is Allstream.” Source: RevenueBase Database · checked Sep 27, 2026
10	Yealink	Partial evidence	Xiamen, ChinaHQ checked Sep 27, 2026	1,001-5,000	773 contacts →
	Partial evidence “Yealink (Stock Code: 300628) is a global brand that specializes in video conferencing, voice communications and collaboration solutions with best-in-class quality, innovative…” Source: RevenueBase Database · checked Sep 27, 2026
11	Tanla Platforms Limited	Strong evidence	Hyderabad, IndiaHQ checked Sep 27, 2026	1,001-5,000	700 contacts →
	Strong evidence “Through Tanla Platforms Limited's cloud communications technology, over global enterprises deliver billions of critical customer interactions daily – from vital banking alerts to…” Source: RevenueBase Database · checked Sep 27, 2026
12	Onecom	Strong evidence	Fareham, United KingdomHQ checked Sep 27, 2026	501-1,000	655 contacts →
	Strong evidence “Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…” Source: RevenueBase Database · checked Sep 27, 2026
13	Route Mobile Limited	Partial evidence	Mumbai, IndiaHQ checked Sep 27, 2026	501-1,000	611 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 27, 2026
14	Alianza	Partial evidence	Pleasant Grove, UT, United StatesHQ checked Sep 27, 2026	501-1,000	606 contacts →
	Partial evidence “Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Source: RevenueBase Database · checked Sep 27, 2026
15	Ooma, INC	Partial evidence	Sunnyvale, CA, United StatesHQ checked Sep 27, 2026	501-1,000	606 contacts →
	Partial evidence “Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Source: RevenueBase Database · checked Sep 27, 2026
16	Amazon WEB Services	Partial evidence	Beijing, ChinaHQ checked Sep 27, 2026	1,001-5,000	597 contacts →
	Partial evidence “For almost 15 years, Amazon Web Services has been the world’s most comprehensive and broadly adopted cloud offering.” Source: RevenueBase Database · checked Sep 27, 2026
17	Deepija Telecom PVT LTD	Indirect evidence	Hyderabad, IndiaHQ checked Sep 27, 2026	201-500	527 contacts →
	Indirect evidence “Telecom Applications are one of the fastest-changing technologies of today.” Source: RevenueBase Database · checked Sep 27, 2026
18	C3ntro Telecom	Indirect evidence	Miguel Hidalgo, MexicoHQ checked Sep 27, 2026	501-1,000	507 contacts →
	Indirect evidence “Somos C3NTRO, una empresa mexicana de clase mundial con 15 años de experiencia en Telecomunicaciones.” Source: RevenueBase Database · checked Sep 27, 2026
19	Sangoma	Partial evidence	Markham, ON, CanadaHQ checked Sep 27, 2026	201-500	454 contacts →
	Partial evidence “Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.” Source: RevenueBase Database · checked Sep 27, 2026
20	Momentum	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	501-1,000	437 contacts →
	Partial evidence “We unleash human momentum with collaboration, connectivity, and communications technology.” Source: RevenueBase Database · checked Sep 27, 2026
21	Spectrumvoip	Indirect evidence	Plano, TX, United StatesHQ checked Sep 27, 2026	201-500	435 contacts →
	Indirect evidence “Family owned and proudly based in Plano, Texas, SpectrumVoIP has kept businesses talking and thriving since 2007.” Source: RevenueBase Database · checked Sep 27, 2026
22	Imimobile Part Of Webex	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	433 contacts →
	Indirect evidence “We've moved!” Source: RevenueBase Database · checked Sep 27, 2026
23	Knowlarity	Strong evidence	SingaporeHQ checked Sep 27, 2026	201-500	429 contacts →
	Strong evidence “Knowlarity is the largest provider of cloud based communications solutions to businesses in Southeast Asia and Middle Eastern markets.” Source: RevenueBase Database · checked Sep 27, 2026
24	Fusion Connect	Strong evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	201-500	425 contacts →
	Strong evidence “Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Source: RevenueBase Database · checked Sep 27, 2026
25	SKYPE	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 27, 2026	10001+	423 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 27, 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: cloud communication platforms. 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 cloud communication platforms.
Partial evidence: Its own public description names part of cloud communication platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud communication platforms. 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 2,214 cloud communication platforms worldwide

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Cloud communication platforms worldwide at a glance

As of Sep 27, 2026

29.1%Verified-email coverage

39.9Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

754

11-50

916

51-200

326

201-500

119

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 cloud communication platforms, 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: Every country. Country and city lists for cloud communication platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cloud communication platforms”. 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 cloud communication platforms), 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 cloud communication platforms, 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, 25,677 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 27, 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.

Cloud communication platforms by location

12 lists · largest first

Every Cloud communication platforms 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 cloud communication platforms, 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 cloud communication platforms are there worldwide?

RevenueBase identified 2,214 cloud communication platforms 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 cloud communication platforms?

The United States leads with 702 companies, followed by the United Kingdom (201) and India (142). Every cloud communication platforms list by country and city is linked on this page.

Which city has the most cloud communication platforms?

London leads with 59 headquartered companies, followed by Singapore (28) and Sao Paulo (24).

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 25,677 verified decision-maker contacts tracked across these 2,214 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 27, 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.