Company lists · Data refreshed September 2026

Top 25 Defense technology software startups based in the United States

Name: Defense technology software startups based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,375 companies tracked

RevenueBase identified 1,375 defense technology software startups headquartered in the United States as of September 2026 and tracks 333,618 professional contacts across them, including 28,094 with verified work emails and 161,916 with mobile numbers. Huntsville is the largest hub.

This list covers defense technology software startups headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

1,375Companies

333,618Contacts tracked

28,094Verified emails

161,916Mobile numbers

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The 25 largest defense technology software startups based in the United States

Ranked by team size

Top 25 of 1,375 defense technology software startups based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to defense technology software startups: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Northrop Grumman	Indirect evidence	San Diego, CA, United States	10001+	75,000 contacts →
	Indirect evidence “We are a close-knit community of big thinkers collaborating to keep the world safe.” Source: RevenueBase Database · checked Sep 1, 2026
2	Raytheon	Partial evidence	Arlington, VA, United States	10001+	42,746 contacts →
	Partial evidence “Raytheon, an RTX business, creates next-generation defense solutions that are smarter, faster and better than previously thought possible.” Source: RevenueBase Database · checked Sep 1, 2026
3	Booz Allen Hamilton	Partial evidence	Mclean, VA, United States	10001+	34,223 contacts →
	Partial evidence “Whether at the border, up in space, or on the battlefield, we build the advanced technology that makes America stronger, faster, and safer.” Source: RevenueBase Database · checked Sep 1, 2026
4	L3harris Technologies	Strong evidence	Melbourne, FL, United States	10001+	24,757 contacts →
	Strong evidence “L3Harris Technologies is the Trusted Disruptor in the defense industry.” Source: RevenueBase Database · checked Sep 1, 2026
5	General Dynamics Information Technology	Partial evidence	Falls Church, VA, United States	10001+	24,019 contacts →
	Partial evidence “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Source: RevenueBase Database · checked Sep 1, 2026
6	BAE Systems, INC	Indirect evidence	Falls Church, VA, United States	10001+	12,874 contacts →
	Indirect evidence “Improving the future and protecting lives is an ambitious mission, but it’s what we do.” Source: RevenueBase Database · checked Sep 1, 2026
7	Peraton	Indirect evidence	San Diego, CA, United States	10001+	10,741 contacts →
	Indirect evidence “At Peraton, we're at the forefront of delivering the next big thing every day.” Source: RevenueBase Database · checked Sep 1, 2026
8	Mantech	Partial evidence	Herndon, VA, United States	5,001-10,000	9,756 contacts →
	Partial evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 1, 2026
9	Leonardo DRS	Strong evidence	Arlington, VA, United States	5,001-10,000	5,947 contacts →
	Strong evidence “Leonardo DRS Inc.(Nasdaq: DRS) is at the forefront of developing transformative defense technologies using its proven agility and delivering innovative solutions for U.S.” Source: RevenueBase Database · checked Sep 1, 2026
10	Asrc Federal	Indirect evidence	Reston, VA, United States	5,001-10,000	4,524 contacts →
	Indirect evidence “ASRC Federal’s employees provide solutions for more than 30 U.S.” Source: RevenueBase Database · checked Sep 1, 2026
11	Systems Planning & Analysis	Indirect evidence	Alexandria, VA, United States	1,001-5,000	2,082 contacts →
	Indirect evidence “Systems Planning & Analysis (SPA) is a leading global provider of data-driven analytical insights for critical national security programs.” Source: RevenueBase Database · checked Sep 1, 2026
12	Scientific Research Corporation	Indirect evidence	South Atlanta, GA, United States	1,001-5,000	1,914 contacts →
	Indirect evidence “Scientific Research Corporation is an advanced engineering company that was founded in 1988 to provide innovative solutions to the U.S.” Source: RevenueBase Database · checked Sep 1, 2026
13	Modern Technology Solutions, Inc. Mtsi	Partial evidence	Las Vegas, NV, United States	1,001-5,000	1,909 contacts →
	Partial evidence “Modern Technology Solutions, Inc.(MTSI) is a 100% employee-owned engineering services and technology solutions company delivering first-choice capabilities to solve problems of…” Source: RevenueBase Database · checked Sep 1, 2026
14	American Systems	Indirect evidence	Mclean, VA, United States	1,001-5,000	1,899 contacts →
	Indirect evidence “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Source: RevenueBase Database · checked Sep 1, 2026
15	Dynetics, INC	Indirect evidence	Huntsville, AL, United States	10001+	1,533 contacts →
	Indirect evidence “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Source: RevenueBase Database · checked Sep 1, 2026
16	Qinetiq US	Strong evidence	Reston, VA, United States	1,001-5,000	1,388 contacts →
	Strong evidence “For over 60 years, QinetiQ US has been providing world-class technology development, engineering research and development and revolutionary products to the defense, security, and…” Source: RevenueBase Database · checked Sep 1, 2026
17	CAE USA	Strong evidence	Tampa, FL, United States	1,001-5,000	1,288 contacts →
	Strong evidence “CAE USA, located in Tampa Florida, provides modeling and simulation technologies, integrated training solutions and training system support services for various defense and…” Source: RevenueBase Database · checked Sep 1, 2026
18	VT Group VTG	Indirect evidence	California, MD, United States	1,001-5,000	1,180 contacts →
	Indirect evidence “VTG delivers force modernization and digital transformation solutions that expand America’s competitive advantage in the modern battlespace.” Source: RevenueBase Database · checked Sep 1, 2026
19	Agile Defense	Partial evidence	Huntsville, AL, United States	1,001-5,000	1,080 contacts →
	Partial evidence “Agile Defense: Always Evolving Agile Defense stands at the forefront of innovation, driving advanced capabilities and solutions tailored to the most critical national security and…” Source: RevenueBase Database · checked Sep 1, 2026
20	Radiance Technologies	Partial evidence	Baton Rouge, LA, United States	1,001-5,000	1,037 contacts →
	Partial evidence “Radiance Technologies, Inc.” Source: RevenueBase Database · checked Sep 1, 2026
21	Tyto Athene, LLC	Indirect evidence	Amherst, VA, United States	1,001-5,000	858 contacts →
	Indirect evidence “At Tyto Athene, we help turn Data to Dominance.” Source: RevenueBase Database · checked Sep 1, 2026
22	Arcfield	Indirect evidence	Chantilly, VA, United States	1,001-5,000	791 contacts →
	Indirect evidence “Arcfield was purpose-built to protect the nation and its allies through innovations in systems engineering and integration, space and mission launch assurance, cybersecurity and…” Source: RevenueBase Database · checked Sep 1, 2026
23	Camber Corporation	Indirect evidence	Warren, MI, United States	1,001-5,000	763 contacts →
	Indirect evidence “Camber is now part of the Integrated Mission Solutions Group of HII's Technical Solutions Division.” Source: RevenueBase Database · checked Sep 1, 2026
24	Precise Systems, INC	Partial evidence	Oxnard, CA, United States	1,001-5,000	735 contacts →
	Partial evidence “Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation’s most critical defense programs.” Source: RevenueBase Database · checked Sep 1, 2026
25	Bluehalo, An AV Company	Strong evidence	Chantilly, VA, United States	1,001-5,000	658 contacts →
	Strong evidence “BlueHalo is now part of AV, a global defense technology leader built for scale, driven by innovation, and delivering #AllDomainDominance across every domain of modern…” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: defense technology software startups. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names defense technology software startups.
Partial evidence: Its own public description names part of defense technology software startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense technology software startups. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,375 defense technology software startups based in the United States

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Defense technology software startups based in the United States at a glance

As of Sep 1, 2026

8.4%Verified-email coverage

48.5%Mobile-number coverage

242.6Average contacts per company

11-50Median size (employees)

4.9%Largest-city concentration · Huntsville

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

438

11-50

397

51-200

335

201-500

109

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among defense technology software startups, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “defense technology software startups”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names defense technology software startups), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among defense technology software startups, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 28,094 across the full list. 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 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Defense technology software startups by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names defense technology software startups, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many defense technology software startups are there based in the United States?

RevenueBase identified 1,375 defense technology software startups headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

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 technology software startups?

Huntsville leads with 68 headquartered companies, followed by Reston (47) and Washington (46).

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 28,094 verified decision-maker contacts tracked across these 1,375 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 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 Smart Search, 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.