Company lists · Data refreshed September 2026
Top 25 Unified communications providers worldwide
RevenueBase identified 4,091 company matches for unified communications providers worldwide as of September 2026 and tracks 118,132 professional contacts across them, including 33,913 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for unified communications 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 September 22, 2026. Country and city lists for unified communications 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.
The 25 largest unified communications providers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 10,510 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 2 | 9,706 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 6,431 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 4 | 3,442 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 3,429 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 3,044 contacts → | ||||
Exact match “Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 2,576 contacts → | ||||
Exact match “With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 8 | 2,320 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 9 | 1,787 contacts → | ||||
Exact match “Plantronics and Polycom are now Poly.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 1,568 contacts → | ||||
Exact match “Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 11 | 1,481 contacts → | ||||
Exact match “Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 1,254 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 13 | 1,133 contacts → | ||||
Exact match “Integra is Allstream.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 14 | 1,128 contacts → | ||||
Exact match “Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 15 | 927 contacts → | ||||
Exact match “Since we’ve been helping organisations stay connected, protected and ready for what comes next.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 773 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 655 contacts → | ||||
Exact match “Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 606 contacts → | ||||
Exact match “Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 606 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 · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 580 contacts → | ||||
Exact match “TDC Erhverv tilbyder en bred portefølje af løsninger inden for kommunikationsteknologi, digitalt samarbejde og it-sikkerhed.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 507 contacts → | ||||
Exact match “Somos C3NTRO, una empresa mexicana de clase mundial con 15 años de experiencia en Telecomunicaciones.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 454 contacts → | ||||
Exact match “Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 437 contacts → | ||||
Exact match “We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 435 contacts → | ||||
Exact match “NHC is THE communications STACK provider™.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 425 contacts → | ||||
Exact match “Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “unified communications providers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 4,091 unified communications providers worldwide
See the full list, filter by size, metro and specialty, and access 33,913 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Unified communications providers worldwide at a glance
As of Sep 22, 2026Companies by employee count
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 unified communications providers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “unified communications 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 33,913 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 September 22, 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.
Unified communications providers by location
16 lists · largest firstEvery Unified communications providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Unified communications providers based in the United States1,155
- Unified communications providers based in the United Kingdom432
- Unified communications providers based in Brazil182
- Unified communications providers based in India162
- Unified communications providers based in Canada143
- Unified communications providers based in Australia134
- Unified communications providers based in France114
- Unified communications providers based in Germany103
- Unified communications providers based in the Netherlands93
- Unified communications providers based in Spain78
- Unified communications providers based in Italy77
- Unified communications providers based in Mexico71
- Unified communications providers based in South Africa71
- Unified communications providers based in Türkiye33
- Unified communications providers based in Belgium29
- Unified communications providers based in the United Arab Emirates28
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 “unified communications providers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many unified communications providers are there worldwide?
RevenueBase identified 4,091 company matches for unified communications providers worldwide as of September 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 unified communications providers?
The United States leads with 1,155 companies, followed by the United Kingdom (432) and Brazil (182). Every unified communications providers list by country and city is linked on this page.
Which city has the most unified communications providers?
London leads with 93 company records, followed by Sao Paulo (52) and New York (39).
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 33,913 professional contacts with verified work emails tracked across these 4,091 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 September 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 4,091 unified communications providers worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 unified communications providers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 4,091 matching company records for unified communications providers worldwide, with 118,132 tracked contacts and 33,913 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 unified communications providers worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  AVAYAtinyurl.comHQ: Morristown, NJ, United StatesReported employees: 5,001-10,000 | Morristown, NJ, United States | 5,001-10,000 | Exact match | 10,510 contacts → |
“At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ZOOMzoom.comHQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 9,706 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ringcentralringcentral.comHQ: Belmont, CA, United StatesReported employees: 5,001-10,000 | Belmont, CA, United States | 5,001-10,000 | Exact match | 6,431 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  MITELmitel.comHQ: Kanata, ON, CanadaReported employees: 1,001-5,000 | Kanata, ON, Canada | 1,001-5,000 | Exact match | 3,442 contacts → |
“Powering more than 2 billion connections every day, Mitel helps businesses connect, collaborate and take care of customers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Vonagevonage.comHQ: Holmdel, NJ, United StatesReported employees: 1,001-5,000 | Holmdel, NJ, United States | 1,001-5,000 | Exact match | 3,429 contacts → |
“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Spectrum Businessspectrum.comHQ: Stamford, CT, United StatesReported employees: 10001+ | Stamford, CT, United States | 10001+ | Exact match | 3,044 contacts → |
“Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TCScalltcs.com HQ: Jefferson City, MO, United StatesReported employees: Not recorded | Jefferson City, MO, United States | Not recorded | Exact match | 2,576 contacts → |
“With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  GOTOgoto.comHQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,320 contacts → |
“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Polycompolycom.comHQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,787 contacts → |
“Plantronics and Polycom are now Poly.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  GAMMAgammagroup.coHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,568 contacts → |
“Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Tulip Telecomtulip.netHQ: New Delhi, IndiaReported employees: 1,001-5,000 | New Delhi, India | 1,001-5,000 | Exact match | 1,481 contacts → |
“Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Intermedia Intelligent Communicationsintermedia.comHQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Integraallstream.comHQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,133 contacts → |
“Integra is Allstream.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Bandwidth INCbandwidth.comHQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,128 contacts → |
“Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Wavenetwavenet.co.ukHQ: Solihull, United KingdomReported employees: 1,001-5,000 | Solihull, United Kingdom | 1,001-5,000 | Exact match | 927 contacts → |
“Since we’ve been helping organisations stay connected, protected and ready for what comes next.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Yealinkyealink.com HQ: Xiamen, ChinaReported employees: 1,001-5,000 | Xiamen, China | 1,001-5,000 | Exact match | 773 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Onecomonecom.co.ukHQ: Fareham, United KingdomReported employees: 501-1,000 | Fareham, United Kingdom | 501-1,000 | Exact match | 655 contacts → |
“Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Alianzaalianza.comHQ: Pleasant Grove, UT, United StatesReported employees: 501-1,000 | Pleasant Grove, UT, United States | 501-1,000 | Exact match | 606 contacts → |
“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ooma, INCooma.comHQ: Sunnyvale, CA, United StatesReported employees: 501-1,000 | Sunnyvale, CA, United States | 501-1,000 | Exact match | 606 contacts → |
“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  TDC Erhvervtdc.dkHQ: København C, DenmarkReported employees: 1,001-5,000 | København C, Denmark | 1,001-5,000 | Exact match | 580 contacts → |
“TDC Erhverv tilbyder en bred portefølje af løsninger inden for kommunikationsteknologi, digitalt samarbejde og it-sikkerhed.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  C3ntro Telecomc3ntro.comHQ: Miguel Hidalgo, MexicoReported employees: 501-1,000 | Miguel Hidalgo, Mexico | 501-1,000 | Exact match | 507 contacts → |
“Somos C3NTRO, una empresa mexicana de clase mundial con 15 años de experiencia en Telecomunicaciones.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sangomasangoma.comHQ: Markham, ON, CanadaReported employees: 201-500 | Markham, ON, Canada | 201-500 | Exact match | 454 contacts → |
“Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Momentumgomomentum.comHQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 437 contacts → |
“We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | NEW Horizon Communicationsnhcgrp.com HQ: Concord, MA, United StatesReported employees: 51-200 | Concord, MA, United States | 51-200 | Exact match | 435 contacts → |
“NHC is THE communications STACK provider™.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Fusion Connectfusionconnect.comHQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 425 contacts → |
“Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,091 company matches
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Unified communications providers: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,082 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,091 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Unified communications providers by location
16 lists · largest firstEvery Unified communications providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Unified communications providers based in the United States1,155
- Unified communications providers based in the United Kingdom432
- Unified communications providers based in Brazil182
- Unified communications providers based in India162
- Unified communications providers based in Canada143
- Unified communications providers based in Australia134
- Unified communications providers based in France114
- Unified communications providers based in Germany103
- Unified communications providers based in the Netherlands93
- Unified communications providers based in Spain78
- Unified communications providers based in Italy77
- Unified communications providers based in Mexico71
- Unified communications providers based in South Africa71
- Unified communications providers based in Türkiye33
- Unified communications providers based in Belgium29
- Unified communications providers based in the United Arab Emirates28
Questions about this company list
What does Exact match mean for unified communications providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many unified communications providers did RevenueBase find worldwide?
The saved snapshot records 4,091 matching company records, 118,132 tracked contacts and 33,913 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 unified communications providers worldwide. Snapshot: September 22, 2026. https://revenuebase.ai/companies/browse/unified-communications-providers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 unified communications providers worldwide
RevenueBase records 4,091 matching company records for unified communications providers worldwide, with 118,132 tracked contacts and 33,913 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 22, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 unified communications providers worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | AVAYAtinyurl.com HQ: Morristown, NJ, United StatesReported employees: 5,001-10,000 | Morristown, NJ, United States | 5,001-10,000 | Exact match | 10,510 contacts → |
“At Avaya, we give our customers the freedom to take their business in the directions that benefit them most.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ZOOMzoom.com HQ: San Jose, CA, United StatesReported employees: 5,001-10,000 | San Jose, CA, United States | 5,001-10,000 | Exact match | 9,706 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ringcentralringcentral.com HQ: Belmont, CA, United StatesReported employees: 5,001-10,000 | Belmont, CA, United States | 5,001-10,000 | Exact match | 6,431 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | MITELmitel.com HQ: Kanata, ON, CanadaReported employees: 1,001-5,000 | Kanata, ON, Canada | 1,001-5,000 | Exact match | 3,442 contacts → |
“Powering more than 2 billion connections every day, Mitel helps businesses connect, collaborate and take care of customers.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Vonagevonage.com HQ: Holmdel, NJ, United StatesReported employees: 1,001-5,000 | Holmdel, NJ, United States | 1,001-5,000 | Exact match | 3,429 contacts → |
“We’re making communications more flexible, intelligent, and personal, to help enterprises the world over stay ahead.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Spectrum Businessspectrum.com HQ: Stamford, CT, United StatesReported employees: 10001+ | Stamford, CT, United States | 10001+ | Exact match | 3,044 contacts → |
“Our story starts with understanding that connectivity powers everything you do, and we make it stronger.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | TCScalltcs.com HQ: Jefferson City, MO, United StatesReported employees: Not recorded | Jefferson City, MO, United States | Not recorded | Exact match | 2,576 contacts → |
“With In-store media solutions to help you connect with your customers and grow your business, TCS delivers communication solutions that will take your business to the next level.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | GOTOgoto.com HQ: Boston, MA, United StatesReported employees: 1,001-5,000 | Boston, MA, United States | 1,001-5,000 | Exact match | 2,320 contacts → |
“As the leader in cloud communications and IT, GoTo addresses real-world challenges with practical innovations and a customer-first mindset.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Polycompolycom.com HQ: San Jose, CA, United StatesReported employees: 1,001-5,000 | San Jose, CA, United States | 1,001-5,000 | Exact match | 1,787 contacts → |
“Plantronics and Polycom are now Poly.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GAMMAgammagroup.co HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 1,568 contacts → |
“Gamma Communications is a leading provider of technology-based communication solutions across Europe.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Tulip Telecomtulip.net HQ: New Delhi, IndiaReported employees: 1,001-5,000 | New Delhi, India | 1,001-5,000 | Exact match | 1,481 contacts → |
“Tulip Telecom Ltd.(BSE: 532691/NSE: TULIP) is India’s leading Enterprise Communications Service provider.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Intermedia Intelligent Communicationsintermedia.com HQ: Sunnyvale, CA, United StatesReported employees: 1,001-5,000 | Sunnyvale, CA, United States | 1,001-5,000 | Exact match | 1,254 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Integraallstream.com HQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,133 contacts → |
“Integra is Allstream.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Bandwidth INCbandwidth.com HQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 1,128 contacts → |
“Bandwidth is the universal communications platform that simplifies how businesses deliver integrated global experiences.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Wavenetwavenet.co.uk HQ: Solihull, United KingdomReported employees: 1,001-5,000 | Solihull, United Kingdom | 1,001-5,000 | Exact match | 927 contacts → |
“Since we’ve been helping organisations stay connected, protected and ready for what comes next.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Yealinkyealink.com HQ: Xiamen, ChinaReported employees: 1,001-5,000 | Xiamen, China | 1,001-5,000 | Exact match | 773 contacts → |
“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 description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Onecomonecom.co.uk HQ: Fareham, United KingdomReported employees: 501-1,000 | Fareham, United Kingdom | 501-1,000 | Exact match | 655 contacts → |
“Onecom is the UK’s leading business telecoms and cloud communications provider managing over a million services for business customers - delivering communication services and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Alianzaalianza.com HQ: Pleasant Grove, UT, United StatesReported employees: 501-1,000 | Pleasant Grove, UT, United States | 501-1,000 | Exact match | 606 contacts → |
“Empowering service provider growth with the world’s most trusted Intelligent Communications Fabric.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ooma, INCooma.com HQ: Sunnyvale, CA, United StatesReported employees: 501-1,000 | Sunnyvale, CA, United States | 501-1,000 | Exact match | 606 contacts → |
“Ooma delivers phone, messaging, video and advanced communications services that are easy to implement and provide great value.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | TDC Erhvervtdc.dk HQ: København C, DenmarkReported employees: 1,001-5,000 | København C, Denmark | 1,001-5,000 | Exact match | 580 contacts → |
“TDC Erhverv tilbyder en bred portefølje af løsninger inden for kommunikationsteknologi, digitalt samarbejde og it-sikkerhed.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | C3ntro Telecomc3ntro.com HQ: Miguel Hidalgo, MexicoReported employees: 501-1,000 | Miguel Hidalgo, Mexico | 501-1,000 | Exact match | 507 contacts → |
“Somos C3NTRO, una empresa mexicana de clase mundial con 15 años de experiencia en Telecomunicaciones.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sangomasangoma.com HQ: Markham, ON, CanadaReported employees: 201-500 | Markham, ON, Canada | 201-500 | Exact match | 454 contacts → |
“Sangoma Technologies Corporation (TSX: STC; Nasdaq: SANG) is a global leader in essential business communications.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Momentumgomomentum.com HQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 437 contacts → |
“We unleash human momentum with collaboration, connectivity, and communications technology.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | NEW Horizon Communicationsnhcgrp.com HQ: Concord, MA, United StatesReported employees: 51-200 | Concord, MA, United States | 51-200 | Exact match | 435 contacts → |
“NHC is THE communications STACK provider™.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Fusion Connectfusionconnect.com HQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 425 contacts → |
“Fusion Connect, an industry leading cloud communications provider, removes complexity so customers can focus on running their business.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 4,091 company matches
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Unified communications providers: dataset insights
September 22, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
4,082 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 4,091 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 22, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Unified communications providers by location
16 lists · largest firstEvery Unified communications providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Unified communications providers based in the United States1,155
- Unified communications providers based in the United Kingdom432
- Unified communications providers based in Brazil182
- Unified communications providers based in India162
- Unified communications providers based in Canada143
- Unified communications providers based in Australia134
- Unified communications providers based in France114
- Unified communications providers based in Germany103
- Unified communications providers based in the Netherlands93
- Unified communications providers based in Spain78
- Unified communications providers based in Italy77
- Unified communications providers based in Mexico71
- Unified communications providers based in South Africa71
- Unified communications providers based in Türkiye33
- Unified communications providers based in Belgium29
- Unified communications providers based in the United Arab Emirates28
Questions about this company list
What does Exact match mean for unified communications providers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many unified communications providers did RevenueBase find worldwide?
The saved snapshot records 4,091 matching company records, 118,132 tracked contacts and 33,913 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 22, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
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Cite this list
RevenueBase Data Team. Top 25 unified communications providers worldwide. Snapshot: September 22, 2026. https://revenuebase.ai/companies/browse/unified-communications-providers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗