Company lists · Data verified August 2026

Top 25 Application security testing companies based in the United States

Name: Application security testing 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 950 companies tracked

There are 950 application security testing companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 15,293 professional contacts across them, including 5,924 with verified work emails and 4,655 with mobile numbers. New York is the largest hub.

This list covers application security testing 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.

950Companies

15,293Contacts tracked

5,924Verified emails

4,655Mobile numbers

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The 25 largest application security testing companies based in the United States

Ranked by team size

Top 25 of 950 application security testing 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	Guidepoint Security	Tampa, FL	1,001-5,000	1,234	809
2	Checkmarx	Paramus, NJ	501-1,000	1,033	708
3	Veracode	Burlington, MA	501-1,000	547	399
4	Pentera	Burlington, MA	201-500	484	355
5	Cobalt	San Francisco, CA	201-500	345	122
6	Bishop FOX	Tempe, AZ	201-500	340	194
7	Prescient Security	Nashville, TN	201-500	266	174
8	Securin INC	Albuquerque, NM	201-500	250	89
9	Synack	Redwood City, CA	201-500	246	92
10	Mindpoint Group, A Tyto Athene Company	Reston, VA	1,001-5,000	208	7
11	Guardsquare	Boston, MA	51-200	165	103
12	Aikido Security	Chicago, IL	201-500	149	92
13	Nuharbor Security	Boston, MA	51-200	149	91
14	Praetorian	Austin, TX	51-200	143	64
15	Tracesecurity	Baton Rouge, LA	51-200	114	58
16	Directdefense	Denver, CO	51-200	112	87
17	WATI	Sacramento, CA	201-500	106	13
18	Ioactive, INC	Atlanta, GA	51-200	105	76
19	Trustedsec	Fairlawn, OH	51-200	100	72
20	Ibeta Quality Assurance	Aurora, CO	51-200	89	20
21	Whitehat Dynamic By Synopsys	San Jose, CA	201-500	89	15
22	Bright	San Rafael, CA	51-200	88	32
23	Strike	New York	51-200	84	31
24	Crossbow Cybersecurity	Walnut, CA	51-200	83	3
25	Data Theorem, INC	Boston, MA	201-500	82	31

Showing 25 of 950 application security testing companies based in the United States

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Application security testing companies based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 41 HQs

4,655Contacts with mobile numbers

29Emails re-verified in last 30 days

Companies by employee count

1-10

530

11-50

310

51-200

201-500

501-1,000

1,001-5,000

Application security testing companies by metro

Metro	Companies
Application security testing companies in New York	41
Application security testing companies in San Francisco	34
Application security testing companies in Austin	26
Application security testing companies in Denver	18
Application security testing companies in Dallas	15
Application security testing companies in Chicago	15
Application security testing companies in Los Angeles	14

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 testing 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; 29 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 testing companies are there based in the United States?

There are 950 application security testing companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Guidepoint Security, headquartered in Tampa, tops this list with the largest team on record.

Which city has the most application security testing companies?

New York leads with 41 headquartered companies, followed by San Francisco (34) and Austin (26).

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 5,924 verified decision-maker contacts tracked across these 950 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.