Company lists · Data refreshed November 2026

Top 25 Secure communication platform companies based in the United States

RevenueBase identified 176 company matches for secure communication platform companies associated with the United States as of November 2026 and tracks 2,522 professional contacts across them, including 1,002 with verified work emails. San Francisco is the largest hub.

This list covers company matches for secure communication platform 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
176Companies
2,522Contacts tracked
1,002Verified emails
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The 25 largest secure communication platform companies based in the United States

Ranked by team size
Top 25 of 176 company matches for secure communication platform 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 matchNew York, NY, United StatesHQ recorded Nov 5, 2026201-500518 contacts →

Exact match

“Symphony is an AI-powered communication and technology company fueled by interconnected platforms: Messaging, Voice, Directory and Analytics.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchWashington, DC, United StatesHQ recorded Nov 5, 2026201-500244 contacts →

Exact match

“Virtru is a global leader in data privacy and protection.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchWilmington, DE, United StatesHQ recorded Nov 5, 202651-200181 contacts →

Exact match

“Rocket.Chat Secure CommsOS® is a communication platform that unifies messaging, voice, video, AI, and mission-critical applications-ensuring uncompromising security, compliance…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchPalo Alto, CA, United StatesHQ recorded Nov 5, 202651-200151 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchPlano, TX, United StatesHQ recorded Nov 5, 2026201-50082 contacts →

Exact match

“Established more than 20 years ago, NetFortris has grown to become the leading provider of secure cloud communication solutions to forward-thinking, mid-sized and enterprise…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchBothell, WA, United StatesHQ recorded Nov 5, 202651-20070 contacts →

Exact match

“XMedius is a global leader in the field of enterprise communications solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchLittleton, CO, United StatesHQ recorded Nov 5, 202651-20061 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 · Nov 5, 2026 · View company records in RevenueBase
8Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-20055 contacts →

Exact match

“Zenzap gives you AI agents that automate work across your tools and teams, all in one intuitive chat interface.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchSan Mateo, CA, United StatesHQ recorded Nov 5, 202651-20048 contacts →

Exact match

“Applications are moving beyond the cloud, to devices, to the edge, and across geographies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchNewark, DE, United StatesHQ recorded Nov 5, 202611-5043 contacts →

Exact match

“SendSafely operates a zero knowledge, end-to-end encrypted file exchange platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 20261-1026 contacts →

Exact match

“Liscio is a secure cloud-based web and mobile software solution that simplifies client communication and collaboration.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLenexa, KS, United StatesHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“Software for Mission Critical Collaboration SpiderOak enables teams to complete their mission without having to make compromises.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchRoswell, GA, United StatesHQ recorded Nov 5, 202611-5023 contacts →

Exact match

“Dispersive Stealth Networking delivers military-grade secure communications through a patented multipath approach that splits, encrypts, and disperses traffic across randomized…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchHerndon, VA, United StatesHQ recorded Nov 5, 202651-20023 contacts →

Exact match

“Fognigma's patented software enables organizations to operate online without exposing their people, infrastructure, or mission.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchCharlottesville, VA, United StatesHQ recorded Nov 5, 202651-20023 contacts →

Exact match

“SafeGuard Cyber provides security and compliance for email and multi-channel communications.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchZephyr Cove, NV, United StatesHQ recorded Nov 5, 202611-5022 contacts →

Exact match

“VirnetX is a global leader in communication security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSanta Clara, CA, United StatesHQ recorded Nov 5, 202611-5021 contacts →

Exact match

“Zangi creates a Private Space of communication.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSan Ramon, CA, United StatesHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“SnippetSentry™ is dedicated to delivering comprehensive, secure mobile messaging app communications solutions that are regulatory compliant.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchScottsdale, AZ, United StatesHQ recorded Nov 5, 202651-20019 contacts →

Exact match

“CellTrust Corporation, founded in 2006 and headquartered in Scottsdale, Arizona, USA, is a global leader in secure, compliant unified mobile communications (UMC), providing…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchMonument, CO, United StatesHQ recorded Nov 5, 202611-5019 contacts →

Exact match

“Botdoc helps thousands of organizations worldwide give their customers a better experience with a simple, fast and secure way to exchange confidential information.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchGermantown, MD, United StatesHQ recorded Nov 5, 202611-5019 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchArlington Heights, MD, United StatesHQ recorded Nov 5, 2026201-50018 contacts →

Exact match

“NetSfere is a next-generation secure enterprise communication platform, delivering AI-powered, quantum-resilient messaging to safeguard mission-critical communications in an era…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchSeattle, WA, United StatesHQ recorded Nov 5, 202611-5016 contacts →

Exact match

“Celo is a HIPAA-compliant messaging tool designed to boost collaboration in healthcare teams.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchSunrise, FL, United StatesHQ recorded Nov 5, 202611-5014 contacts →

Exact match

“At Sotera, we offer unparalleled end-to-end protection for your critical information.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchNashville, TN, United StatesHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“Trusted Solutions, LLC Trusted Solutions specializes in enterprise-level secure chat technology designed to meet the demands of mission-critical operations.”

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

Showing 25 of 176 secure communication platform companies based in the United States

See the full list, filter by size, metro and specialty, and access 1,002 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Secure communication platform companies based in the United States at a glance

As of Nov 5, 2026
39.7%Verified-email coverage
14.3Average contacts per company
11-50Median size (employees)
6.2%Largest-city concentration · San Francisco
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
73
11-50
73
51-200
20
201-500
6
501-1,000
2
1,001-5,000
1
10001+
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 176 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 “secure communication platform 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 1,002 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 “secure communication platform companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many secure communication platform companies are there based in the United States?

RevenueBase identified 176 company matches for secure communication platform 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?

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

Which city has the most secure communication platform companies?

San Francisco leads with 11 company records, followed by New York (10) and Wilmington (7).

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 1,002 professional contacts with verified work emails tracked across these 176 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.