Company lists · Data verified August 2026

Top 25 Application security companies based in the United States

Name: Application security companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 526 companies tracked

There are 526 application security companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 14,644 professional contacts across them, including 6,635 with verified work emails and 4,048 with mobile numbers. San Francisco is the largest hub.

This list covers application security companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

526Companies

14,644Contacts tracked

6,635Verified emails

4,048Mobile numbers

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The 25 largest application security companies based in the United States

Ranked by team size

Top 25 of 526 application security companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Thales Cybersecurity Products	Austin, TX	1,001-5,000	1,252	645
2	Imperva	Austin, TX	10001+	1,211	829
3	Checkmarx	Paramus, NJ	501-1,000	1,033	708
4	Veracode	Burlington, MA	501-1,000	547	399
5	Lookout	Boston, MA	201-500	491	197
6	Pentera	Burlington, MA	201-500	484	355
7	horizon3.ai	Durham, NC	201-500	356	246
8	Bishop FOX	Tempe, AZ	201-500	340	194
9	mend.io	Boston, MA	201-500	258	169
10	Zimperium	Dallas, TX	201-500	246	141
11	Noname Security	San Jose, CA	201-500	230	55
12	TAC Security	San Francisco, CA	51-200	207	46
13	OX Security	New York, NY	51-200	181	104
14	Wallarm	Austin, TX	51-200	171	100
15	Guardsquare	Boston, MA	51-200	165	103
16	Aikido Security	Chicago, IL	201-500	149	92
17	Mobileiron	Mountain View, CA	501-1,000	142	35
18	OPSMX	Sunnyvale, CA	51-200	128	13
19	Apiiro	New York, NY	51-200	121	74
20	Directdefense	Denver, CO	51-200	112	87
21	Ioactive, INC	Atlanta, GA	51-200	105	76
22	Nowsecure	Vienna, VA	51-200	101	60
23	Neovera	Reston, VA	51-200	97	61
24	Whitehat Dynamic By Synopsys	San Jose, CA	201-500	89	15
25	Hackersec	Boston, MA	51-200	89	3

Showing 25 of 526 application security companies based in the United States

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Application security companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

San FranciscoLargest hub · 34 HQs

4,048Contacts with mobile numbers

35Emails re-verified in last 30 days

Companies by employee count

1-10

229

11-50

202

51-200

201-500

501-1,000

1,001-5,000

10001+

Application security companies by metro

Metro	Companies
Application security companies in San Francisco	34
Application security companies in New York	29
Application security companies in Austin	17
Application security companies in Boston	12
Application security companies in Wilmington	9
Application security companies in Denver	9
Application security companies in Chicago	9

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “application security companies”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 35 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many application security companies are there based in the United States?

There are 526 application security companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Thales Cybersecurity Products, headquartered in Austin, tops this list with the largest team on record.

Which city has the most application security companies?

San Francisco leads with 34 headquartered companies, followed by New York (29) and Austin (17).

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 6,635 verified decision-maker contacts tracked across these 526 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.