Company lists · Data refreshed November 2026

Top 25 Internal communication software companies based in the United States

RevenueBase identified 95 company matches for internal communication software companies associated with the United States as of November 2026 and tracks 4,599 professional contacts across them, including 648 with verified work emails. New York is the largest hub.

This list covers company matches for internal 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 November 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 Nov 5, 2026 How this list was built
95Companies
4,599Contacts tracked
648Verified emails
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The 25 largest internal communication software companies based in the United States

Ranked by team size
Top 25 of 95 company matches for internal communication software companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 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 matchSan Francisco, CA, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
2Exact matchOmaha, NE, United StatesHQ recorded Nov 5, 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 5, 2026 · View company records in RevenueBase
3Exact matchAustin, TX, United StatesHQ recorded Nov 5, 2026501-1,000176 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchScotts Valley, CA, United StatesHQ recorded Nov 5, 202651-20084 contacts →

Exact match

“ROI Communication is a 100% employee-owned internal communications company focused on helping the world’s leading businesses achieve their very best through inspired employee…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20084 contacts →

Exact match

“Speakap is an employee experience platform built for the frontline, by the frontline.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20080 contacts →

Exact match

“Amplispot is the mobile-first company communications platform, used by organizations to increase productivity and empower advocacy by informing and engaging employees with timely…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchArlington, VA, United StatesHQ recorded Nov 5, 202651-20070 contacts →

Exact match

“Axios HQ is the first internal communications management platform to equip organizations with the tools, data, and best practices to be world-class communicators.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20056 contacts →

Exact match

“In 2024, LiveTiles joined forces with Omnia, an award-winning intranet solution that significantly improves employee engagement.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202611-5051 contacts →

Exact match

“The INCITE platform is a mobile-first communications, training and task management platform designed for today’s modern workforce.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20048 contacts →

Exact match

“Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchLos Angeles, CA, United StatesHQ recorded Nov 5, 202651-20043 contacts →

Exact match

“Haystack reinvented the intranet for the future of work, with a focus on seamless integrations, powerful search capabilities, and consumer-grade design.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchGreenland, NH, United StatesHQ recorded Nov 5, 202611-5037 contacts →

Exact match

“PoliteMail is an internal communications measurement platform for Microsoft Outlook and Office365.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-20036 contacts →

Exact match

“Agility is the greatest advantage in the modern marketplace.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLehi, UT, United StatesHQ recorded Nov 5, 202611-5030 contacts →

Exact match

“Pronto is a workplace communication app built for teams that aren't sitting at a desk.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchBlue Ash, OH, United StatesHQ recorded Nov 5, 202651-20028 contacts →

Exact match

“Cerkl Broadcast is the premier, forward-thinking employee communications suite.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchPleasanton, CA, United StatesHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“Communicate with your employees in the simplest way possible.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 20261-1016 contacts →

Exact match

“Zelo redefines how companies communicate internally.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchMiami, IL, United StatesHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Konverse is an all-in-one communication platform designed for nondesk workers.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchBellevue, WA, United StatesHQ recorded Nov 5, 202611-508 contacts →

Exact match

“Proze empowers organizations to turn email into a strategic advantage.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchSan Francisco, United StatesHQ recorded Nov 5, 202611-508 contacts →

Exact match

“Hubfly is an IT Product Company which helps employees develop a shared vision by ensuring that they stay engaged to their jobs.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchNew York, United StatesHQ recorded Nov 5, 20261-108 contacts →

Exact match

“BuddiesHR is the #1 suite of Apps for Slack.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBrooklyn, United StatesHQ recorded Nov 5, 202651-2007 contacts →

Exact match

“Repticity is an all-in-one communication and work management platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchWilmington, DE, United StatesHQ recorded Nov 5, 202611-506 contacts →

Exact match

“Offers an easy-to-use, affordable enterprise instant messenger featuring advanced security, privacy, and customization.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchChicago, IL, United StatesHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Udext is transforming the way businesses communicate and engage with their employees.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchRidgefield, WA, United StatesHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Mocaworks is a software company and business incubator located in Ridgefield, WA.”

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

Showing 25 of 95 internal communication software companies based in the United States

See the full list, filter by size, metro and specialty, and access 648 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal communication software companies based in the United States at a glance

As of Nov 5, 2026
14.1%Verified-email coverage
48.4Average contacts per company
11-50Median size (employees)
12.6%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
37
51-200
16
201-500
3
501-1,000
1
1,001-5,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 95 companies.

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 “internal 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 648 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 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 “internal communication software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internal communication software companies are there based in the United States?

RevenueBase identified 95 company matches for internal communication software companies associated with the United States 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?

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

Which city has the most internal communication software companies?

New York leads with 12 company records, followed by San Francisco (12) and Atlanta (3).

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 648 professional contacts with verified work emails tracked across these 95 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 5, 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.