Company lists · Data refreshed September 2026

Top 25 Defense technology software startups based in Herndon, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 38 companies tracked

RevenueBase identified 38 defense technology software startups headquartered in Herndon, United States as of September 2026 and tracks 12,160 professional contacts across them, including 3,754 with verified work emails and 5,712 with mobile numbers. Huntsville is the largest hub.

This list covers defense technology software startups 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 10, 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 10, 2026 86% judged on-target in blind review

38Companies

12,160Contacts tracked

3,754Verified emails

5,712Mobile numbers

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The 25 largest defense technology software startups based in Herndon, United States

Ranked by team size

Top 25 of 38 defense technology software startups based in Herndon, United States, ranked by team size, largest first. Data refreshed Sep 10, 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	Mantech	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	5,001-10,000	9,697 contacts →
	Partial evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 10, 2026
2	LTS	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	356 contacts →
	Indirect 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 10, 2026
3	Dark Wolf	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	501-1,000	348 contacts →
	Partial evidence “Dark Wolf provides DevSecOps agile software development, information operations, penetration testing and incident response, applied research and rapid prototyping, machine…” Source: RevenueBase Database · checked Sep 10, 2026
4	Sotera Defense Solutions, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	1,001-5,000	214 contacts →
	Partial evidence “Sotera Defense Solutions (Sotera) has joined KeyW Corporation.” Source: RevenueBase Database · checked Sep 10, 2026
5	Solerity	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	201-500	128 contacts →
	Indirect evidence “Since 1991, Solerity, Inc.” Source: RevenueBase Database · checked Sep 10, 2026
6	Netcentrics	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	122 contacts →
	Partial evidence “For 30 years, NetCentrics has excelled as an innovative technology solutions provider for the U.S.” Source: RevenueBase Database · checked Sep 10, 2026
7	Nextpoint Group	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	201-500	119 contacts →
	Partial evidence “NextPoint Group is a mission enablement, technology focused and culture rich IT professional service provider.” Source: RevenueBase Database · checked Sep 10, 2026
8	Foxhole Technology	Strong evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	117 contacts →
	Strong 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 10, 2026
9	Alku Government Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
10	Probity INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	97 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 2026
11	Blackhorse Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	97 contacts →
	Indirect evidence “BlackHorse Solutions, Inc.” Source: RevenueBase Database · checked Sep 10, 2026
12	Qvine Corporation	Strong evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
13	Chameleon Consulting Group LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
14	MKGCS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	34 contacts →
	Partial evidence “MKGCS is the premier software development company for advanced, large scale mission critical systems for commercial and government applications.” Source: RevenueBase Database · checked Sep 10, 2026
15	Rssi Onezero Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	33 contacts →
	Indirect evidence “In October 2021, OneZero Solutions, LCC (OneZero), a leading federal cybersecurity and IT solutions provider, announced its acquisition of Right-Sized Solutions Inc.(RSSi), a…” Source: RevenueBase Database · checked Sep 10, 2026
16	Optimal Solutions INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	29 contacts →
	Indirect evidence “Optimal Solutions, Inc.(OSI) is a small, disadvantaged business and certified Capability Maturity Model Integration (CMMI) for Development (DEV) Level 3, International…” Source: RevenueBase Database · checked Sep 10, 2026
17	IP Network Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
18	Berryville Holdings, LLC	Strong evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	11-50	25 contacts →
	Strong evidence “Berryville Holdings, LLC is a software development and services company dedicated to providing leading-edge technology solutions to customers whose security and operational…” Source: RevenueBase Database · checked Sep 10, 2026
19	Delex Systems, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	51-200	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 2026
20	Byte Systems, LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	11-50	17 contacts →
	Partial evidence “BYTE Systems is a Government focused Veteran Owned information technology services company.” Source: RevenueBase Database · checked Sep 10, 2026
21	KLC Network Services, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
22	The Reckon Crew	Strong evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
23	Modern Government Solutions MGS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 10, 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 10, 2026
24	Excel Technologies, LLC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	11-50	6 contacts →
	Indirect evidence “A Woman-Owned Small Business focusing on mission-oriented solutions supporting citizen and national security centric Federal programs.” Source: RevenueBase Database · checked Sep 10, 2026
25	Veloxxity	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 10, 2026	1-10	3 contacts →
	Indirect evidence “Veloxxity delivers tailored solutions that enable our clients to think and act strategically.” Source: RevenueBase Database · checked Sep 10, 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 38 defense technology software startups based in Herndon, United States

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

As of Sep 10, 2026

30.9%Verified-email coverage

47.0%Mobile-number coverage

320.0Average contacts per company

51-200Median size (employees)

178.9%Largest-city concentration · Huntsville

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

3,3150–30

25731–60

261–90

090–180

180180+

Company record updated

Median 73.0d

00–30

3,89131–60

6,39961–90

1,39490–180

476180+

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 Herndon, 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 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, 3,754 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 10, 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 in the United States

Defense technology software startups in Huntsville68
Defense technology software startups in Reston47
Defense technology software startups in Washington46
Defense technology software startups in Columbia39
Defense technology software startups in Herndon37
Defense technology software startups in Arlington34
Defense technology software startups in Chantilly32
Defense technology software startups in San Diego31

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 Herndon, United States?

RevenueBase identified 38 defense technology software startups 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 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 3,754 verified decision-maker contacts tracked across these 38 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 10, 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.