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Company lists · Data verified August 2026

Top 25 Defense software development companies based in the United States

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,102 companies tracked

There are 1,102 defense software development companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 323,780 professional contacts across them, including 25,694 with verified work emails and 155,840 with mobile numbers. Huntsville is the largest hub.

This list covers defense software development 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.

1,102Companies
323,780Contacts tracked
25,694Verified emails
155,840Mobile numbers
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The 25 largest defense software development companies based in the United States

Ranked by team size
Top 25 of 1,102 defense software development 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.
#CompanyHQEmployeesContactsVerified emails
1Northrop GrummanSan Diego, CA10001+75,0001,247
2RaytheonArlington, VA10001+42,7461,421
3Booz Allen HamiltonMclean, VA10001+34,2231
4L3harris TechnologiesMelbourne, FL10001+24,757932
5General Dynamics Information TechnologyFalls Church, VA10001+24,019675
6BAE Systems, INCFalls Church, VA10001+12,874494
7PeratonSan Diego, CA10001+10,741197
8MantechHerndon, VA5,001-10,0009,7563,116
9Leonardo DRSArlington, VA5,001-10,0005,94738
10Asrc FederalReston, VA5,001-10,0004,5242,934
11Anduril IndustriesCA1,001-5,0002,6861,957
12Textron SystemsSterling, VA1,001-5,0002,02366
13Scientific Research CorporationSouth Atlanta, GA1,001-5,0001,9142
14Modern Technology Solutions, Inc. MtsiLas Vegas, NV1,001-5,0001,90950
15Dynetics, INCHuntsville, AL10001+1,53341
16Thales Defense & Security, INCClarksburg, MD1,001-5,0001,5201
17Qinetiq USReston, VA1,001-5,0001,38817
18CAE USATampa, FL1,001-5,0001,288473
19VT Group VTGCalifornia, MD1,001-5,0001,180481
20Agile DefenseHuntsville, AL1,001-5,0001,080402
21Radiance TechnologiesBaton Rouge, LA1,001-5,0001,03719
22Tyto Athene, LLCAmherst, VA1,001-5,00085816
23Precise Systems, INCOxnard, CA1,001-5,00073516
24Bluehalo, An AV CompanyChantilly, VA1,001-5,00065816
25Planned Systems InternationalValparaiso, FL1,001-5,000608316

Showing 25 of 1,102 defense software development companies based in the United States

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Defense software development companies based in the United States at a glance

As of Aug 28, 2026
11-50Median size (employees)
HuntsvilleLargest hub · 62 HQs
155,840Contacts with mobile numbers
69Emails re-verified in last 30 days

Companies by employee count

1-10
359
11-50
309
51-200
263
201-500
88
501-1,000
33
1,001-5,000
32
5,001-10,000
4
10001+
12

Defense software development companies by metro

MetroCompanies
Defense software development companies in Huntsville62
Defense software development companies in Herndon34
Defense software development companies in Reston32
Defense software development companies in Columbia29
Defense software development companies in Arlington28
Defense software development companies in Washington25
Defense software development companies in San Diego24
Defense software development companies in Chantilly24

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 “defense software development 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; 69 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 defense software development companies are there based in the United States?

There are 1,102 defense software development companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Northrop Grumman, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most defense software development companies?

Huntsville leads with 62 headquartered companies, followed by Herndon (34) and Reston (32).

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 25,694 verified decision-maker contacts tracked across these 1,102 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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Related lists

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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.

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