Company lists · Data refreshed September 2026

Top 25 Employee communications software based in the United States

Name: Employee communications software based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 122 companies tracked

RevenueBase identified 122 employee communications software headquartered in the United States as of September 2026 and tracks 5,428 professional contacts across them, including 1,050 with verified work emails and 1,821 with mobile numbers. San Francisco is the largest hub.

This list covers employee communications software headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

122Companies

5,428Contacts tracked

1,050Verified emails

1,821Mobile numbers

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The 25 largest employee communications software based in the United States

Ranked by team size

Top 25 of 122 employee communications software based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to employee communications software: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SLACK	Indirect evidence	San Francisco, CA, United States	1,001-5,000	2,591 contacts →
	Indirect evidence “Slack is on a mission to make people's working lives simpler, more pleasant and more productive.” Source: RevenueBase Database · checked Sep 1, 2026
2	Humand	Partial evidence	San Francisco, CA, United States	501-1,000	487 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
3	Workshop	Strong evidence	Omaha, NE, United States	51-200	426 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
4	Interact Software	Strong evidence	Tulsa, OK, United States	201-500	246 contacts →
	Strong evidence “Interact delivers enterprise-grade intranet software to over customers and millions of employees worldwide.” Source: RevenueBase Database · checked Sep 1, 2026
5	Nectar	Indirect evidence	Lehi, UT, United States	51-200	221 contacts →
	Indirect evidence “Nectar gives organizations the tools to build a culture people won't want to leave.” Source: RevenueBase Database · checked Sep 1, 2026
6	BLINK	Partial evidence	Boston, MA, United States	51-200	152 contacts →
	Partial evidence “Blink is the mobile-first employee experience platform that connects your people, systems, and culture in one super-app.” Source: RevenueBase Database · checked Sep 1, 2026
7	ROI Communication	Strong evidence	Scotts Valley, CA, United States	51-200	89 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
8	Axios HQ	Partial evidence	Arlington, VA, United States	51-200	83 contacts →
	Partial evidence “Axios HQ is the first internal communications management platform to equip organizations with the tools, data, and best practices to be world-class communicators.” Source: RevenueBase Database · checked Sep 1, 2026
9	Amplispot	Strong evidence	New York City, NY, United States	51-200	79 contacts →
	Strong evidence “Amplispot is the mobile-first company communications platform, used by organizations to increase productivity and empower advocacy by informing and engaging employees with timely…” Source: RevenueBase Database · checked Sep 1, 2026
10	Multimedia Plus	Partial evidence	New York, NY, United States	11-50	55 contacts →
	Partial evidence “The INCITE platform is a mobile-first communications, training and task management platform designed for today’s modern workforce.” Source: RevenueBase Database · checked Sep 1, 2026
11	Axero Solutions	Partial evidence	New York, NY, United States	51-200	49 contacts →
	Partial evidence “Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.” Source: RevenueBase Database · checked Sep 1, 2026
12	Politemail Software	Partial evidence	Greenland, NH, United States	11-50	43 contacts →
	Partial evidence “PoliteMail is an internal communications measurement platform for Microsoft Outlook and Office365.” Source: RevenueBase Database · checked Sep 1, 2026
13	Akumina	Partial evidence	Nashua, NH, United States	51-200	38 contacts →
	Partial evidence “The employee experience platform that empowers global enterprises to drive engagement, productivity, and innovation.” Source: RevenueBase Database · checked Sep 1, 2026
14	Haystack	Indirect evidence	Seattle, WA, United States	51-200	38 contacts →
	Indirect evidence “Haystack reinvented the intranet for the future of work, with a focus on seamless integrations, powerful search capabilities, and consumer-grade design.” Source: RevenueBase Database · checked Sep 1, 2026
15	Socialchorus	Indirect evidence	San Francisco, CA, United States	51-200	36 contacts →
	Indirect evidence “Agility is the greatest advantage in the modern marketplace.” Source: RevenueBase Database · checked Sep 1, 2026
16	Hubengage	Strong evidence	Cambridge, MA, United States	11-50	35 contacts →
	Strong evidence “HubEngage™ is a unified employee communications, engagement, recognition and instant messaging platform.” Source: RevenueBase Database · checked Sep 1, 2026
17	Team Engine	Partial evidence	Boulder, CO, United States	11-50	31 contacts →
	Partial evidence “Team Engine is an HR automation suite that helps growing companies outcompete for top talent and implement best practices in employee engagement.” Source: RevenueBase Database · checked Sep 1, 2026
18	CERKL	Strong evidence	Blue Ash, OH, United States	51-200	30 contacts →
	Strong evidence “Cerkl Broadcast is the premier, forward-thinking employee communications suite.” Source: RevenueBase Database · checked Sep 1, 2026
19	Teleskope	Partial evidence	Bethesda, MD, United States	11-50	29 contacts →
	Partial evidence “Teleskope is the unified employee experience platform trusted by Fortune 500 companies and home to Ask Skope, the industry's first agentic AI built specifically for people…” Source: RevenueBase Database · checked Sep 1, 2026
20	Netpresenter	Strong evidence	Princeton, NJ, United States	11-50	28 contacts →
	Strong evidence “Netpresenter has been a pioneer in employee and emergency communications for over 30 years.” Source: RevenueBase Database · checked Sep 1, 2026
21	Pronto	Partial evidence	Lehi, UT, United States	11-50	28 contacts →
	Partial evidence “Pronto is a workplace communication app built for teams that aren't sitting at a desk.” Source: RevenueBase Database · checked Sep 1, 2026
22	Oneteam	Partial evidence	New York, United States	11-50	21 contacts →
	Partial evidence “Oneteam’s user-friendly employee hub makes it easy for everyone to access essential updates and information on the go.” Source: RevenueBase Database · checked Sep 1, 2026
23	AIRBO	Strong evidence	Venice, CA, United States	11-50	19 contacts →
	Strong evidence “Airbo is an interactive benefit communications platform designed to help employees understand and use their benefits in a fun, engaging way.” Source: RevenueBase Database · checked Sep 1, 2026
24	Umanni	Indirect evidence	Fort Lauderdale, FL, United States	11-50	19 contacts →
	Indirect evidence “Umanni provides solutions that help organizations to identify the strategic value of all workers inside the company and maximize the profit upon business results through a…” Source: RevenueBase Database · checked Sep 1, 2026
25	Snapcomms	Strong evidence	San Francisco, CA, United States	51-200	18 contacts →
	Strong evidence “SnapComms is a leading provider of internal communication software.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: employee communications software. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names employee communications software.
Partial evidence: Its own public description names part of employee communications software, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name employee communications software. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 122 employee communications software based in the United States

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Employee communications software based in the United States at a glance

As of Sep 1, 2026

19.3%Verified-email coverage

33.5%Mobile-number coverage

44.5Average contacts per company

11-50Median size (employees)

11.5%Largest-city concentration · San Francisco

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among employee communications software, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “employee communications software”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names employee communications software), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among employee communications software, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,050 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names employee communications software, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many employee communications software are there based in the United States?

RevenueBase identified 122 employee communications software headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SLACK, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most employee communications software?

San Francisco leads with 14 headquartered companies, followed by New York (12) and Chicago (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,050 verified decision-maker contacts tracked across these 122 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

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