Company lists · Data refreshed November 2026

Top 25 Workplace communication service providers worldwide

RevenueBase identified 2,478 company matches for workplace communication service providers worldwide as of November 2026 and tracks 91,939 professional contacts across them, including 27,101 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for workplace communication service providers 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 November 6, 2026. Country and city lists for workplace communication service providers 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 Nov 6, 2026 How this list was built
2,478Companies
91,939Contacts tracked
27,101Verified emails
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The 25 largest workplace communication service providers worldwide

Ranked by team size
Top 25 of 2,478 company matches for workplace communication service providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSydney, CA, TürkiyeHQ recorded Nov 6, 202610001+19,288 contacts →

Exact match

“Atlassian powers the collaboration that helps teams accomplish what would otherwise be impossible alone.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMorristown, United StatesHQ recorded Nov 6, 20265,001-10,00011,344 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 · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSan Jose, United StatesHQ recorded Nov 6, 20265,001-10,00010,391 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSao Paulo, BrazilHQ recorded Nov 6, 20261,001-5,0002,714 contacts →

Exact match

“With over 30 years of experience in Information and Communication Technology market, the Spread has extensive experience and expertise in the field and has the challenge of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 20261,001-5,0002,639 contacts →

Exact match

“Slack is on a mission to make people's working lives simpler, more pleasant and more productive.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMunich, VA, GermanyHQ recorded Nov 6, 20265,001-10,0001,980 contacts →

Exact match

“Unify is now part of Mitel!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew Delhi, IndiaHQ recorded Nov 6, 20261,001-5,0001,601 contacts →

Exact match

“Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSunnyvale, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,411 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 · Nov 6, 2026 · View company records in RevenueBase
9Exact matchVancouver, WA, United StatesHQ recorded Nov 6, 2026501-1,0001,123 contacts →

Exact match

“Integra is Allstream.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchNY, United StatesHQ recorded Nov 6, 2026n/a919 contacts →

Exact match

“Café helps enterprises drive collaboration, engagement, and cohesion through real-world interactions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchChemnitz, GermanyHQ recorded Nov 6, 2026501-1,000877 contacts →

Exact match

“Staffbase is the first AI-native Employee Experience Platform, equipping many of the world’s leading companies with solutions to inspire every employee with motivating…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchChennai, IndiaHQ recorded Nov 6, 2026501-1,000801 contacts →

Exact match

“FULL Creative is a Portland-based product company with offices in India (Chennai), Canada (Toronto) and the United Kingdom (Edinburgh).”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchWoodmead, South AfricaHQ recorded Nov 6, 2026201-500782 contacts →

Exact match

“Welcome to the future of working.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Francisco, United StatesHQ recorded Nov 6, 2026501-1,000675 contacts →

Exact match

“At Humand, we empower companies to digitize their internal communication, culture, and HR processes in one unified platform, recognizing that the future of mid market and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBangalore, IndiaHQ recorded Nov 6, 2026201-500535 contacts →

Exact match

“At Wepsol, we empower organizations to build modern, fluidic workplaces that elevate work and drive meaningful outcomes.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchOmaha, NE, United StatesHQ recorded Nov 6, 202651-200509 contacts →

Exact match

“Workshop is a modern, purpose-built internal communications platform that helps teams create, send, manage, and measure employee communications in one place, starting with email…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchTampa, FL, United StatesHQ recorded Nov 6, 2026201-500484 contacts →

Exact match

“Connect your people, places, and spaces.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchRedmond, WA, United StatesHQ recorded Nov 6, 202610001+468 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 · Nov 6, 2026 · View company records in RevenueBase
19Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026501-1,000447 contacts →

Exact match

“We unleash human momentum with collaboration, connectivity, and communications technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCork, IrelandHQ recorded Nov 6, 2026201-500403 contacts →

Exact match

“Workvivo is an employee experience platform (EXP) that simplifies communication and increases engagement by empowering employees to be heard and helping everyone to feel included…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact match東京都中央区, JapanHQ recorded Nov 6, 2026501-1,000401 contacts →

Exact match

“At Cybozu, our mission is to build a society brimming with teamwork.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchAlkmaar, NetherlandsHQ recorded Nov 6, 2026201-500354 contacts →

Exact match

“Hallo is het begin van elk goed gesprek Bij Hallo beseffen we als geen ander dat goed contact met je klanten, partners, leveranciers en medewerkers het allerbelangrijkste is dat…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHoofddorp, NetherlandsHQ recorded Nov 6, 2026501-1,000340 contacts →

Exact match

“Jouw gids in de complexe wereld van IT & Communication.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchMoscow, RussiaHQ recorded Nov 6, 2026501-1,000311 contacts →

Exact match

“MyOffice offers secure office solutions for communications and teamwork.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBreukelen, MN, United StatesHQ recorded Nov 6, 20265,001-10,000284 contacts →

Exact match

“GPA features the best-of-breed Regional Business Units (RBUs) in 50 countries, with localized delivery capabilities in over 150+ cities globally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,478 workplace communication service providers worldwide

See the full list, filter by size, metro and specialty, and access 27,101 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Workplace communication service providers worldwide at a glance

As of Nov 6, 2026
29.5%Verified-email coverage
37.1Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,145
11-50
932
51-200
236
201-500
77
501-1,000
28
1,001-5,000
21
5,001-10,000
10
10001+
11

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 workplace communication service providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “workplace communication service providers” 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 27,101 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 November 6, 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.

Workplace communication service providers by location

20 lists · largest first

Every Workplace communication service providers 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 “workplace communication service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many workplace communication service providers are there worldwide?

RevenueBase identified 2,478 company matches for workplace communication service providers worldwide as of November 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?

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

Which country has the most workplace communication service providers?

The United States leads with 586 companies, followed by the United Kingdom (255) and India (109). Every workplace communication service providers list by country and city is linked on this page.

Which city has the most workplace communication service providers?

London leads with 53 company records, followed by San Francisco (42) and New York (33).

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 27,101 professional contacts with verified work emails tracked across these 2,478 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 November 6, 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.