Company lists · Data refreshed September 2026

Top 25 Real-time communication software companies based in the United States

RevenueBase identified 198 company matches for real-time communication software companies associated with the United States as of September 2026 and tracks 29,291 professional contacts across them, including 6,863 with verified work emails and 6,457 with mobile numbers. Austin is the largest hub.

This list covers company matches for real-time communication software companies associated with the United States, 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 5, 2026.

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 Sep 5, 2026 How this list was built
198Companies
29,291Contacts tracked
6,863Verified emails
6,457Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest real-time communication software companies based in the United States

Ranked by team size
Top 25 of 198 company matches for real-time communication software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 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 Sep 5, 20265,001-10,00010,510 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 5, 2026 · View company records in RevenueBase
2Exact matchSan Jose, CA, United StatesHQ recorded Sep 5, 20265,001-10,0009,706 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 5, 2026 · View company records in RevenueBase
3Exact matchSan Jose, CA, United StatesHQ recorded Sep 5, 20261,001-5,0001,787 contacts →

Exact match

“Plantronics and Polycom are now Poly.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4Exact matchSunnyvale, CA, United StatesHQ recorded Sep 5, 20261,001-5,0001,254 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 5, 2026 · View company records in RevenueBase
5Exact matchSanta Clara, CA, United StatesHQ recorded Sep 5, 2026501-1,000516 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 · Sep 5, 2026 · View company records in RevenueBase
6Exact matchRedmond, WA, United StatesHQ recorded Sep 5, 202610001+423 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 · Sep 5, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Sep 5, 2026201-500401 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8Exact matchSan Jose, CA, United StatesHQ recorded Sep 5, 2026501-1,000264 contacts →

Exact match

“Please be advised that BlueJeans by Verizon is being sunset, concluding in the first half of 2024.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchGaithersburg, MD, United StatesHQ recorded Sep 5, 20261,001-5,000252 contacts →

Exact match

“BroadSoft, now part of Cisco, is the leading provider of software and services that enable mobile, fixed-line and cable service providers to offer Unified Communications over…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchSouth Plainfield, NJ, United StatesHQ recorded Sep 5, 202651-200212 contacts →

Exact match

“Communication is the backbone of every business.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11Exact matchPalo Alto, CA, United StatesHQ recorded Sep 5, 2026201-500194 contacts →

Exact match

“Voximplant versatile cloud platform enables business to bring interaction to a different level.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12Exact matchTempe, AZ, United StatesHQ recorded Sep 5, 2026201-500175 contacts →

Exact match

“Vertical Communications is a leading provider of communications platforms and applications that enable critical business workflows for enterprises across a variety of industries…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13Exact matchAustin, TX, United StatesHQ recorded Sep 5, 2026501-1,000164 contacts →

Exact match

“Jive is the leading provider of modern communication and collaboration solutions for business.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact matchPalo Alto, CA, United StatesHQ recorded Sep 5, 202651-200152 contacts →

Exact match

“Mattermost is the leading collaboration platform for mission-critical work.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15Exact matchSan Francisco, CA, United StatesHQ recorded Sep 5, 202651-200146 contacts →

Exact match

“We're bringing video messaging to work and empowering everyone to communicate more effectively, wherever they are.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16Exact matchSouth Jordan, UT, United StatesHQ recorded Sep 5, 202651-200141 contacts →

Exact match

“Smash is solution that integrates the latest innovative technological components into accessible, all-inclusive solutions that bridge each aspect of professional and personal…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17Exact matchAustin, TX, United StatesHQ recorded Sep 5, 2026201-500121 contacts →

Exact match

“Lifesize, Inc, recently acquired by Enghouse Systems is now part of the Enghouse Interactive Management Group.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18Exact matchBoston, MA, United StatesHQ recorded Sep 5, 2026501-1,000103 contacts →

Exact match

“Fuze is a global cloud communications and collaboration software platform for the enterprise that was acquired by 8x8.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19Exact matchSarasota, FL, United StatesHQ recorded Sep 5, 2026201-500103 contacts →

Exact match

“Founded in 2006 in Sarasota, Florida, Star2Star Communications delivers the World's Leading Hybrid Cloud Communications Solution.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20Exact matchHackensack, NJ, United StatesHQ recorded Sep 5, 2026201-50087 contacts →

Exact match

“Named a Leader and Visionary by Gartner, Vidyo has been awarded more than 170 video communications technology patents.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21Exact matchAustin, TX, United StatesHQ recorded Sep 5, 202611-5072 contacts →

Exact match

“Mio is a secure middleware that unlocks cross-platform messaging, file sharing, and meeting initiation for enterprise organizations that use Google Workspace and Microsoft 365…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, United StatesHQ recorded Sep 5, 202651-20063 contacts →

Exact match

“VideoSDK is providing end-to-end solutions in real-time communication technology.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23Exact matchUnited StatesHQ recorded Sep 5, 202651-20061 contacts →

Exact match

“Create without limits.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24Exact matchLittleton, CO, United StatesHQ recorded Sep 5, 202651-20056 contacts →

Exact match

“Our Mission: With a strong commitment to security and customer service, our innovative engagement solutions ensure that our customers can communicate with confidence.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25Exact matchLouisville, KY, United StatesHQ recorded Sep 5, 2026n/a55 contacts →

Exact match

“West IP Communications, a wholly owned subsidiary of West Corporation, is a leading provider of cloud-based communications for the enterprise - including MPLS-based application…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

Showing 25 of 198 real-time communication software companies based in the United States

See the full list, filter by size, metro and specialty, and access 6,863 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Real-time communication software companies based in the United States at a glance

As of Sep 5, 2026
23.4%Verified-email coverage
22.0%Mobile-number coverage
147.9Average contacts per company
11-50Median size (employees)
4.5%Largest-city concentration · Austin
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
55
11-50
73
51-200
42
201-500
11
501-1,000
6
1,001-5,000
3
5,001-10,000
4
10001+
3

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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.
What qualifies
Company records associated with the United States whose business descriptions match “real-time communication 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 6,863 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 5, 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.

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 “real-time communication software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many real-time communication software companies are there based in the United States?

RevenueBase identified 198 company matches for real-time communication software companies associated with the United States 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 city has the most real-time communication software companies?

Austin leads with 9 company records, followed by San Francisco (9) and New York (9).

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 6,863 professional contacts with verified work emails tracked across these 198 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 198 real-time communication software companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.