Company lists · Data refreshed September 2026

Top 25 Defense technology consulting companies based in Herndon, United States

Name: Defense technology consulting companies based in Herndon, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 50 companies tracked

RevenueBase identified 50 defense technology consulting companies headquartered in Herndon, United States as of September 2026 and tracks 12,849 professional contacts across them, including 3,479 with verified work emails. Washington is the largest hub.

This list covers defense technology consulting companies headquartered in Herndon, 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 16, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

50Companies

12,849Contacts tracked

3,479Verified emails

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The 25 largest defense technology consulting companies based in Herndon, United States

Ranked by team size

Top 25 of 50 defense technology consulting companies based in Herndon, United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to defense technology consulting companies: 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	Mantech	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	5,001-10,000	9,697 contacts →
	Partial evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 16, 2026
2	Linquest	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	642 contacts →
	Indirect evidence “LinQuest delivers performance excellence across the Air, Land, Sea, Space, and Cyberspace domains.” Source: RevenueBase Database · checked Sep 16, 2026
3	LTS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	356 contacts →
	Partial evidence “From disaster response and automated healthcare kiosks to occupational health services and federal IT consulting, we operate at the intersection of mission-critical need and…” Source: RevenueBase Database · checked Sep 16, 2026
4	Sotera Defense Solutions, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1,001-5,000	214 contacts →
	Partial evidence “Sotera Defense Solutions (Sotera) has joined KeyW Corporation.” Source: RevenueBase Database · checked Sep 16, 2026
5	ASI Government	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	192 contacts →
	Indirect evidence “For nearly two decades, ASI Government has served as a trusted advisor to government leaders seeking to improve mission performance, enhance organizational effectiveness and drive…” Source: RevenueBase Database · checked Sep 16, 2026
6	Solerity	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	201-500	128 contacts →
	Indirect evidence “Since 1991, Solerity, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
7	Foxhole Technology	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	117 contacts →
	Partial evidence “Foxhole Technology is a thought-leading technology firm offering a robust suite of cybersecurity, software development, systems engineering, and test & evaluation solutions for…” Source: RevenueBase Database · checked Sep 16, 2026
8	Alku Government Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	102 contacts →
	Partial evidence “ALKU Government Solutions is a National Security Defense Contractor serving the defense, energy, homeland security and intelligence communities.” Source: RevenueBase Database · checked Sep 16, 2026
9	Indigo IT LLC	Strong evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	101 contacts →
	Strong evidence “Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Source: RevenueBase Database · checked Sep 16, 2026
10	Blackhorse Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	97 contacts →
	Indirect evidence “BlackHorse Solutions, Inc.” Source: RevenueBase Database · checked Sep 16, 2026
11	Makpar	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	87 contacts →
	Indirect evidence “Makpar is a comprehensive professional and technical solutions provider for the Federal government.” Source: RevenueBase Database · checked Sep 16, 2026
12	Reston Consulting Group, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	65 contacts →
	Indirect evidence “Network Design * Engineering * Integration * Operations * Security RCG has more than 35 years' experience supporting some of the world's largest and most highly visible IT…” Source: RevenueBase Database · checked Sep 16, 2026
13	Qvine Corporation	Strong evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	61 contacts →
	Strong evidence “QVine is a leading provider of Agile software development, cloud computing, big data, and other Information Technology (IT) services in the National Security and Defense sectors.” Source: RevenueBase Database · checked Sep 16, 2026
14	Chameleon Consulting Group LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	59 contacts →
	Partial evidence “Chameleon Consulting Group, LLC was founded by a small group of professionals with extensive experience in cyber operations, software engineering, data analysis, and physical…” Source: RevenueBase Database · checked Sep 16, 2026
15	TPGS	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	27 contacts →
	Indirect evidence “At TPGS, we understand and value the unique needs of our government clients and industry partners as well as the pressing need to complete projects on time.” Source: RevenueBase Database · checked Sep 16, 2026
16	IP Network Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	26 contacts →
	Partial evidence “At IPNS, we work exclusively in the Federal marketplace, providing agencies in the Civilian, Defense and Intelligence communities with advanced IT systems solutions and…” Source: RevenueBase Database · checked Sep 16, 2026
17	Vissat Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	11-50	23 contacts →
	Indirect evidence “Vissat Solutions, Inc is a Virginia-based small business founded in 2005.” Source: RevenueBase Database · checked Sep 16, 2026
18	Delex Systems, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
19	Byte Systems, LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “BYTE Systems is a Government focused Veteran Owned information technology services company.” Source: RevenueBase Database · checked Sep 16, 2026
20	KLC Network Services, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	51-200	16 contacts →
	Indirect evidence “KLC Network Services, Incorporated is an SBA business based in Herndon, Virginia that provides technical solutions to our valued customers.” Source: RevenueBase Database · checked Sep 16, 2026
21	Cortechs, Inc. DBA B12 Government Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	11-50	16 contacts →
	Partial evidence “B12 Government Solutions is a leader in “advancing the art and science of delivering quality software”, and providing Consulting Services for Federal, State and Local Government…” Source: RevenueBase Database · checked Sep 16, 2026
22	The Reckon Crew	Strong evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1-10	9 contacts →
	Strong evidence “At Reckon, we are the vanguard of a new era in government IT consulting, a small but mighty startup driven by a mission to empower government agencies with cutting-edge technology…” Source: RevenueBase Database · checked Sep 16, 2026
23	Modern Government Solutions MGS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	11-50	9 contacts →
	Partial evidence “At Modern Government Solutions (MGS), we deliver mission-critical solutions that empower the Department of Defense, Intelligence Community, and federal agencies to achieve…” Source: RevenueBase Database · checked Sep 16, 2026
24	Integrity Intelligence INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “Integrity Intelligence is an IT Professional Services corporation started by senior technology leaders who left successful careers to return to a small, customer focused company…” Source: RevenueBase Database · checked Sep 16, 2026
25	ARC Space Innovation	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Arc Space Innovation delivers high-impact engineering services, systems integration, and subject matter expertise supporting the Department of War, Intelligence Community, and…” Source: RevenueBase Database · checked Sep 16, 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 consulting companies. 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 consulting companies.
Partial evidence: Its own public description names part of defense technology consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense technology consulting companies. 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 50 defense technology consulting companies based in Herndon, United States

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Defense technology consulting companies based in Herndon, United States at a glance

As of Sep 16, 2026

27.1%Verified-email coverage

257.0Average contacts per company

51-200Median size (employees)

322.0%Largest-city concentration · Washington

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Herndon, so it is reported there. Company counts and contact totals on this page are exact for Herndon, over 50 companies.

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 consulting companies, 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 Herndon, United States whose own description of what they do matches “defense technology consulting companies”. 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 consulting companies), 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 consulting companies, and records with no verified work email. Companies headquartered outside Herndon 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, 3,479 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 16, 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 consulting companies by metro in the United States

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 consulting companies, 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 consulting companies are there based in Herndon, United States?

RevenueBase identified 50 defense technology consulting companies headquartered in Herndon, 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?

Mantech, headquartered in Herndon, tops this list with the largest team on record.

Which city has the most defense technology consulting companies?

Washington leads with 161 headquartered companies, followed by Huntsville (130) and Arlington (122).

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 3,479 verified decision-maker contacts tracked across these 50 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 16, 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.