Company lists · Data refreshed September 2026

Top 25 Appsec companies worldwide

Name: Appsec companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 14,712 companies tracked

RevenueBase identified 14,712 company matches for appsec companies worldwide as of September 2026 and tracks 216,508 professional contacts across them, including 70,256 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for appsec companies worldwide, 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 September 21, 2026. Country and city lists for appsec companies follow the table.

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 Sep 21, 2026 How this list was built

14,712Companies

216,508Contacts tracked

70,256Verified emails

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The 25 largest appsec companies worldwide

Ranked by team size

Top 25 of 14,712 company matches for appsec companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Sep 21, 2026	10001+	14,289 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Private Sector	Exact match	United StatesHQ recorded Sep 21, 2026	n/a	12,771 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Hackerone	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	n/a	6,058 contacts →
	Exact match “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Sep 21, 2026	n/a	3,649 contacts →
	Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Cyberark	Exact match	Newton, MA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,302 contacts →
	Exact match “CyberArk is the global leader in Identity Security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Qualys	Exact match	Foster City, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,058 contacts →
	Exact match “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Beyondtrust	Exact match	Johns Creek, GA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,669 contacts →
	Exact match “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Radware	Exact match	Tel Aviv, IsraelHQ recorded Sep 21, 2026	1,001-5,000	1,456 contacts →
	Exact match “Radware® is a global leader in application security and delivery solutions for multi-cloud environments.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,252 contacts →
	Exact match “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,232 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Imperva	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	10001+	1,217 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	SNYK	Exact match	Boston, MA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,188 contacts →
	Exact match “Snyk, the leader in secure AI software development, empowers organizations to build fast and stay secure by unleashing developer productivity and reducing business risk.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Black Duck	Exact match	Burlington, MA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	1,187 contacts →
	Exact match “Black Duck® meets the board-level risks of modern software with True Scale Application Security, ensuring uncompromised trust in software for the regulated, AI-powered world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	ARMIS	Exact match	Tel Aviv, United StatesHQ recorded Sep 21, 2026	501-1,000	1,112 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Watchguard Technologies	Exact match	Seattle, WA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,059 contacts →
	Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Checkmarx	Exact match	Paramus, NJ, United StatesHQ recorded Sep 21, 2026	501-1,000	1,042 contacts →
	Exact match “Checkmarx helps the world’s largest enterprises get ahead of application risk without slowing down development.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Irdeto	Exact match	Hoofddorp, NetherlandsHQ recorded Sep 21, 2026	1,001-5,000	1,026 contacts →
	Exact match “Irdeto, a CANAL+ company, is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Zerofox	Exact match	Baltimore, MD, United StatesHQ recorded Sep 21, 2026	501-1,000	904 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Sep 21, 2026	1,001-5,000	844 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Synack RED Team	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	n/a	813 contacts →
	Exact match “The Synack Red Team is a private freelance security research team that spans 6 continents and over 80 countries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	SISA	Exact match	Bengaluru, IndiaHQ recorded Sep 21, 2026	201-500	743 contacts →
	Exact match “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	ME	Exact match	United StatesHQ recorded Sep 21, 2026	1,001-5,000	707 contacts →
	Exact match “We are now officially Skyhigh Security!” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	COBRA	Exact match	London, United KingdomHQ recorded Sep 21, 2026	n/a	705 contacts →
	Exact match “Get a free, powerful security assessment with personalised recommendations, the same analysis that costs from IT Consultancies.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Intigriti	Exact match	Antwerpen, BelgiumHQ recorded Sep 21, 2026	n/a	683 contacts →
	Exact match “Intigriti is the trusted leader in crowdsourced security, empowering the world’s largest organizations to find and fix vulnerabilities before cybercriminals can exploit them.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “appsec companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 14,712 appsec companies worldwide

See the full list, filter by size, metro and specialty, and access 70,256 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Appsec companies worldwide at a glance

As of Sep 21, 2026

32.4%Verified-email coverage

14.7Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

8,542

11-50

4,673

51-200

1,104

201-500

234

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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.
Coverage: Every country. Country and city lists for appsec companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “appsec 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. 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 70,256 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 September 21, 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.

Appsec companies by location

102 lists · largest first

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

Countries

Cities

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

How many appsec companies are there worldwide?

RevenueBase identified 14,712 company matches for appsec companies worldwide as of September 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?

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

Which country has the most appsec companies?

The United States leads with 3,230 companies, followed by India (1,356) and the United Kingdom (900). Every appsec companies list by country and city is linked on this page.

Which city has the most appsec companies?

London leads with 388 company records, followed by Sao Paulo (175) and Paris (147).

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 70,256 professional contacts with verified work emails tracked across these 14,712 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 September 21, 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.