Company lists · Data verified August 2026

Top 25 Application security software companies based in the United States

Name: Application security software 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 214 companies tracked

There are 214 application security software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 7,825 professional contacts across them, including 3,608 with verified work emails and 2,110 with mobile numbers. San Francisco is the largest hub.

This list covers application security software 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.

214Companies

7,825Contacts tracked

3,608Verified emails

2,110Mobile numbers

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

Ranked by team size

Top 25 of 214 application security software 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	Black Duck	Burlington, MA	5,001-10,000	1,168	199
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	Zimperium	Dallas, TX	201-500	246	141
6	TAC Security	San Francisco, CA	51-200	207	46
7	Guardsquare	Boston, MA	51-200	165	103
8	Aikido Security	Chicago, IL	201-500	149	92
9	Nowsecure	Vienna, VA	51-200	101	60
10	Whitehat Dynamic By Synopsys	San Jose, CA	201-500	89	15
11	Bright	San Rafael, CA	51-200	88	32
12	Sitelock	Scottsdale, AZ	201-500	87	8
13	Data Theorem, INC	Boston, MA	201-500	82	31
14	Bana Solutions, LLC	Mclean, VA	11-50	80	10
15	Socket	San Francisco	51-200	79	54
16	Seal Security	New York	11-50	60	2
17	Vulncheck	Lexington, MA	51-200	57	35
18	Cybral	Miami, FL	51-200	48	25
19	Pradeo	San Francisco, CA	51-200	47	33
20	Projectdiscovery	San Francisco, CA	11-50	45	26
21	We45	San Jose, CA	51-200	37	7
22	Stackhawk	Denver, CO	11-50	35	17
23	Arnica	Alpharetta, GA	11-50	33	17
24	HCL Appscan	Sunnyvale, CA	1,001-5,000	31	18
25	raven.io	Palo Alto, CA	11-50	22	15

Showing 25 of 214 application security software companies based in the United States

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

As of Aug 28, 2026

11-50Median size (employees)

San FranciscoLargest hub · 21 HQs

2,110Contacts with mobile numbers

18Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Application security software companies by metro

Metro	Companies
Application security software companies in San Francisco	21
Application security software companies in New York	13
Application security software companies in Boston	7
Application security software companies in Palo Alto	5
Application security software companies in San Jose	4
Application security software companies in Washington	3
Application security software companies in Middletown	3

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 software 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; 18 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 software companies are there based in the United States?

There are 214 application security software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Black Duck, headquartered in Burlington, tops this list with the largest team on record.

Which city has the most application security software companies?

San Francisco leads with 21 headquartered companies, followed by New York (13) and Boston (7).

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 3,608 verified decision-maker contacts tracked across these 214 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.