Company lists · Data refreshed November 2026

Top 25 Secure communication software companies based in the United States

RevenueBase identified 116 company matches for secure communication software companies associated with the United States as of November 2026 and tracks 1,652 professional contacts across them, including 589 with verified work emails. San Francisco is the largest hub.

This list covers company matches for secure 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
116Companies
1,652Contacts tracked
589Verified emails
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The 25 largest secure communication software companies based in the United States

Ranked by team size
Top 25 of 116 company matches for secure 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 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
2Exact 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
3Exact 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
4Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202611-5093 contacts →

Exact match

“Signal is a nonprofit end-to-end encrypted communications app, driven by the mission to protect free expression and enable secure global communication through open source privacy…”

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 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
9Exact 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
10Exact 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
11Exact 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
12Exact 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
13Exact 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
14Exact 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
15Exact matchFramingham, LA, United StatesHQ recorded Nov 5, 202651-20019 contacts →

Exact match

“Process Software is a premier supplier of communications software solutions to mission critical environments in business since 1984.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact 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
17Exact 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
18Exact 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
19Exact matchPoway, CA, United StatesHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“At Identillect Technologies, we create a user-friendly secure email solution to protect critical information, with an emphasis on simplicity.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchColumbia, MD, United StatesHQ recorded Nov 5, 202651-20010 contacts →

Exact match

“Silent Circle is a recognized innovator in enterprise privacy delivered through a revolutionary platform of devices, software and services.”

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

Exact match

“Hilgraeve Inc, a privately held software company based just south of Detroit in Monroe, Michigan, is a long-time leader in meeting the mission-critical communication needs of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-2008 contacts →

Exact match

“StealthMail makes your emails secure and invisible to email relays, hackers, or Public Internet threats - making email relationships with clients a trusted one via StealthMail’s…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchGainesville, FL, United StatesHQ recorded Nov 5, 20261-107 contacts →

Exact match

“Traditional security systems primarily focus on three types of mechanisms: backend network security (VLANs, secure networks, etc.), perimeter defense (intrusion detection…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchNew York, NY, United StatesHQ recorded Nov 5, 20261-107 contacts →

Exact match

“Criptext provides secure email and messaging for governments and large enterprises.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchCampbell, CA, United StatesHQ recorded Nov 5, 202611-506 contacts →

Exact match

“Verifyle is ultra-secure messaging and documents sharing, all from a single screen.”

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

Showing 25 of 116 secure communication software companies based in the United States

See the full list, filter by size, metro and specialty, and access 589 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Nov 5, 2026
35.7%Verified-email coverage
14.2Average contacts per company
11-50Median size (employees)
10.3%Largest-city concentration · San Francisco
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
50
11-50
44
51-200
13
201-500
5
501-1,000
1
1,001-5,000
2
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 116 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 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 589 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 software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 116 company matches for secure 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?

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

Which city has the most secure communication software companies?

San Francisco leads with 12 company records, followed by New York (7) and Dallas (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 589 professional contacts with verified work emails tracked across these 116 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.