Company lists · Data refreshed October 2026

Top 22 Defense technology software startups based in Mclean, United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 40 companies tracked

RevenueBase identified 40 company matches for defense technology software startups associated with Mclean, United States as of October 2026 and tracks 44,081 professional contacts across them, including 2,511 with verified work emails. Across the United States, Huntsville is the largest hub for this category (65 companies); Mclean has 40.

This list covers company matches for defense technology software startups associated with Mclean, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

40Companies

44,081Contacts tracked

2,511Verified emails

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The 22 largest defense technology software startups based in Mclean, United States

Ranked by team size

Top 22 of 40 company matches for defense technology software startups based in Mclean, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	American Systems	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,899 contacts →
	Exact match “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Qinetiq US	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,383 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Agile Defense	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,086 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	By Light Professional IT Services	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	559 contacts →
	Exact match “By Light Professional IT Services LLC, headquartered in McLean, VA, is a leading provider of advanced technology solutions delivering cyber and warfighter training platforms for…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	bigbear.ai	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	501-1,000	432 contacts →
	Exact match “BigBear.ai fuses artificial intelligence with deep mission expertise, empowering decision-makers and operators to act with speed, precision, and confidence.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Altamira Technologies Corporation	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	501-1,000	352 contacts →
	Exact match “Altamira Technologies, a Parsons Company, is a top open source technology company in the national security space.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Obxtek	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	201-500	349 contacts →
	Exact match “OBXtek is a relationship-driven information technology and diversified professional services company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	VMD Corp	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	501-1,000	254 contacts →
	Exact match “About VMD VMD, now a part of Xcelerate Solutions, is a leading defense and national security company, delivering integrated solutions in enterprise security, strategic consulting…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Cybermedia Technologies, LLC Ctec	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	223 contacts →
	Exact match “We modernize legacy infrastructure, secure mission-critical systems and design digital experiences that impact millions of federal workers & American citizens every day.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Be, INC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	201-500	176 contacts →
	Exact match “BE is a trusted partner on missions of vital importance to our customers, the nation and the world.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Valiant Solutions	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	201-500	152 contacts →
	Exact match “Valiant Solutions, LLC stands out as a premier provider of Cybersecurity and IT services aiding the Federal Government in staying ahead of complex information security challenges.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Network Designs, INC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	152 contacts →
	Exact match “NDi is a Verified Service-Disabled Veteran Owned Small Business [SDVOSB] professional services firm, supporting Federal and Commercial customers since 1995.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	CRI	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	103 contacts →
	Exact match “Communications Resource, Inc.(CRI) is a minority and Woman-Owned Small Business with over 30 years of focused security performance supporting over 40 government and commercial…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	West 4th Strategy, LLC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	58 contacts →
	Exact match “West 4th, now strengthened by the acquisition of Integrated Systems (ISI), delivers rapid response technology services and mission-focused solutions to civilian, defense, and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Omnisystems, INC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	53 contacts →
	Exact match “OmniSystems delivers state-of-the-art solutions, specializing in the development and integration of web-enabled systems.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Research And Development Solutions, INC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	50 contacts →
	Exact match “RDSI is a professional services company performing a wide range of engineering, technical, training, monitoring and program and fiscal management services, solving problems for…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	22nd Century Software Solutions	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	48 contacts →
	Exact match “22nd Century Software Solutions is Software product subsidy of 22nd Century Technologies Inc,(22nd), developing innovative IT solutions and futuristic products for US Government.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Infinity Technology, LLC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	51-200	42 contacts →
	Exact match “Infinity Technology, LLC, is a certified 8(a), Service-Disabled Veteran-Owned, Small Disadvantaged Business.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Virtus Technology Solutions, Inc. A Service Disabled Veteran Owned Small Business	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	11-50	14 contacts →
	Exact match “Virtus TS is a privately owned, technology-based company that provides systems engineering and integration, program management, subject matter expertise (SME), information…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Cacg, LLC	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	11-50	13 contacts →
	Exact match “CACG, LLC is a mission-focused technology partner delivering secure IT solutions for the U.S.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Polysentry	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	11-50	5 contacts →
	Exact match “Polysentry, based in McLean, Virginia, is a technology company that creates AI-enabled software platforms for both government and commercial sectors.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Clear Entropy	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	11-50	2 contacts →
	Exact match “We're an innovative technology firm in the cybersecurity and digital transformation space, with disciplines in IT Solutions, Mission Support and Consulting for both federal…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “defense technology software startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 22 of 40 defense technology software startups based in Mclean, United States

See the full list, filter by size, metro and specialty, and access 2,511 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Defense technology software startups based in Mclean, United States at a glance

As of Oct 1, 2026

5.7%Verified-email coverage

1102.0Average contacts per company

51-200Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 40 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Mclean, United States whose business descriptions match “defense technology software startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,511 professional contacts with verified work emails across the full matched dataset. 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 October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Defense technology software startups by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “defense technology software startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 40 company matches for defense technology software startups associated with Mclean, United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

American Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most defense technology software startups?

Huntsville leads the United States with 65 company records, followed by Reston (47) and Washington (46). Mclean has 40.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,511 professional contacts with verified work emails tracked across these 40 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 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 SmartSearch, 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.