Company lists · Data refreshed September 2026

Top 25 Internal communications platforms worldwide

Name: Internal communications platforms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 429 companies tracked

RevenueBase identified 429 internal communications platforms worldwide as of September 2026 and tracks 9,057 professional contacts across them, including 2,546 with verified work emails and 2,125 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers internal communications platforms worldwide, 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 4, 2026. Country and city lists for internal communications platforms follow the table.

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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

429Companies

9,057Contacts tracked

2,546Verified emails

2,125Mobile numbers

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The 25 largest internal communications platforms worldwide

Ranked by team size

Top 25 of 429 internal communications platforms worldwide, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to internal communications platforms: 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 StatesHQ checked Sep 4, 2026	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 4, 2026
2	Staffbase	Partial evidence	Chemnitz, GermanyHQ checked Sep 4, 2026	501-1,000	839 contacts →
	Partial evidence “Staffbase is the first AI-native Employee Experience Platform, equipping many of the world’s leading companies with solutions to inspire every employee with motivating…” Source: RevenueBase Database · checked Sep 4, 2026
3	Humand	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	501-1,000	487 contacts →
	Strong 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 4, 2026
4	Workshop	Strong evidence	Omaha, NE, United StatesHQ checked Sep 4, 2026	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 4, 2026
5	GPA	Indirect evidence	Breukelen, IL, NetherlandsHQ checked Sep 4, 2026	5,001-10,000	317 contacts →
	Indirect evidence “GPA features the best-of-breed Regional Business Units (RBUs) in 50 countries, with localized delivery capabilities in over 150+ cities globally.” Source: RevenueBase Database · checked Sep 4, 2026
6	Firstup	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 4, 2026	201-500	270 contacts →
	Strong evidence “The Firstup Intelligent Communication Platform equips organizations to improve productivity, retention, labor efficiency, safety compliance, and revenue performance by activating…” Source: RevenueBase Database · checked Sep 4, 2026
7	Interact Software	Indirect evidence	Manchester, OK, United KingdomHQ checked Sep 4, 2026	201-500	246 contacts →
	Indirect evidence “Interact delivers enterprise-grade intranet software to over customers and millions of employees worldwide.” Source: RevenueBase Database · checked Sep 4, 2026
8	Haiilo	Strong evidence	Hamburg, GermanyHQ checked Sep 4, 2026	201-500	233 contacts →
	Strong evidence “Haiilo is a digital home for employees, bringing together social intranet, internal communications, advocacy, and insights in one easy-to-use platform.” Source: RevenueBase Database · checked Sep 4, 2026
9	BLINK	Partial evidence	Boston, MA, United StatesHQ checked Sep 4, 2026	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 4, 2026
10	Steeple	Strong evidence	Rennes, FranceHQ checked Sep 4, 2026	51-200	91 contacts →
	Strong evidence “Steeple est une solution de communication interne phygitale qui permet aux entreprises d'impliquer leurs équipes et de créer du lien entre les collaborateurs.” Source: RevenueBase Database · checked Sep 4, 2026
11	ROI Communication	Strong evidence	Scotts Valley, CA, United StatesHQ checked Sep 4, 2026	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 4, 2026
12	Axios HQ	Strong evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	83 contacts →
	Strong 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 4, 2026
13	Amplispot	Strong evidence	New York City, NY, United StatesHQ checked Sep 4, 2026	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 4, 2026
14	Jostle	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 4, 2026	51-200	69 contacts →
	Indirect evidence “Jostle brings everyone together and helps each person succeed.” Source: RevenueBase Database · checked Sep 4, 2026
15	Igloo Software	Partial evidence	Kitchener, ON, CanadaHQ checked Sep 4, 2026	51-200	68 contacts →
	Partial evidence “Igloo Software is the only digital workplace platform that enables a truly connected, collaborative, and engaged frontline and desked workforce.” Source: RevenueBase Database · checked Sep 4, 2026
16	Livetiles, A Part Of Omnia	Indirect evidence	New York, AB, United StatesHQ checked Sep 4, 2026	51-200	64 contacts →
	Indirect evidence “In 2024, LiveTiles joined forces with Omnia, an award-winning intranet solution that significantly improves employee engagement.” Source: RevenueBase Database · checked Sep 4, 2026
17	Dialog	Partial evidence	Sao Paulo, BrazilHQ checked Sep 4, 2026	51-200	58 contacts →
	Partial evidence “Somos a Dialog, plataforma líder em comunicação interna no Brasil.> 2º lugar na categoria ScaleUp no ranking de Engajamento, Performance e Cultura do 100 Open Startups 2024, sendo…” Source: RevenueBase Database · checked Sep 4, 2026
18	Multimedia Plus	Strong evidence	New York, NY, United StatesHQ checked Sep 4, 2026	11-50	55 contacts →
	Strong 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 4, 2026
19	PIX Mídia	Partial evidence	Esteio, BrazilHQ checked Sep 4, 2026	11-50	53 contacts →
	Partial evidence “A Pix Midia desenvolve soluções para comunicação interna, para empresas que desejam otimizar a distribuição de informação numa realidade em que o tempo é escasso.” Source: RevenueBase Database · checked Sep 4, 2026
20	Axero Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	49 contacts →
	Indirect evidence “Axero provides easy-to-use intranet software that boosts productivity, unifies your people, and helps your company thrive.” Source: RevenueBase Database · checked Sep 4, 2026
21	Ringover	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	201-500	47 contacts →
	Partial evidence “Ringover provides the communications suite that staffing, recruiting and revenue-driven firms require to drive better client & business development outcomes.” Source: RevenueBase Database · checked Sep 4, 2026
22	Hubley	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 4, 2026	51-200	45 contacts →
	Indirect evidence “Get the Most from Your SharePoint and Microsoft 365 Investment!” Source: RevenueBase Database · checked Sep 4, 2026
23	Bundeling	Partial evidence	Venray, NetherlandsHQ checked Sep 4, 2026	11-50	45 contacts →
	Partial evidence “The Bundeling app brings all communication and information together in one clear and secure environment.” Source: RevenueBase Database · checked Sep 4, 2026
24	Ventla	Strong evidence	Stockholm, IL, SwedenHQ checked Sep 4, 2026	11-50	45 contacts →
	Strong evidence “Ventla is a global communications and event services company which provides a platform focused on simplifying and encouraging interaction and engagement.” Source: RevenueBase Database · checked Sep 4, 2026
25	Politemail Software	Strong evidence	Greenland, NH, United StatesHQ checked Sep 4, 2026	11-50	43 contacts →
	Strong evidence “PoliteMail is an internal communications measurement platform for Microsoft Outlook and Office365.” Source: RevenueBase Database · checked Sep 4, 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: internal communications platforms. 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 internal communications platforms.
Partial evidence: Its own public description names part of internal communications platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name internal communications platforms. 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 429 internal communications platforms worldwide

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Internal communications platforms worldwide at a glance

As of Sep 4, 2026

28.1%Verified-email coverage

23.5%Mobile-number coverage

21.1Average contacts per company

11-50Median size (employees)

6.8%Largest-city concentration · London

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

206

11-50

164

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 internal communications platforms, 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.
Coverage: 7 countries, largest first: the United States, the United Kingdom, Brazil, France, the Netherlands, Germany, Canada. Country and city lists for internal communications platforms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “internal communications platforms”. 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 internal communications platforms), 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 internal communications platforms, and records with no verified work email.
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, 2,546 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 4, 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.

Internal communications platforms by location

8 lists · largest first

Every Internal communications platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Internal communications platforms based in London, United Kingdom26

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 internal communications platforms, 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 internal communications platforms are there worldwide?

RevenueBase identified 429 internal communications platforms worldwide 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 country has the most internal communications platforms?

The United States leads with 184 companies, followed by the United Kingdom (62) and Brazil (52). Every internal communications platforms list by country and city is linked on this page.

Which city has the most internal communications platforms?

London leads with 29 headquartered companies, followed by San Francisco (22) and New York (18).

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 2,546 verified decision-maker contacts tracked across these 429 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 4, 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.