Company lists · Data refreshed September 2026

Top 25 Iacm federal software companies based in Herndon, United States

Name: Iacm federal software 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 28, 2026 33 companies tracked

RevenueBase identified 33 iacm federal software companies headquartered in Herndon, United States as of September 2026 and tracks 11,680 professional contacts across them, including 3,635 with verified work emails. Across the United States, Herndon is the largest hub for this category.

This list covers iacm federal software 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 28, 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 28, 2026 86% judged on-target in blind review

33Companies

11,680Contacts tracked

3,635Verified emails

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The 25 largest iacm federal software companies based in Herndon, United States

Ranked by team size

Top 25 of 33 iacm federal software companies based in Herndon, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to iacm federal software 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	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	5,001-10,000	9,697 contacts →
	Indirect evidence “MANTECH is more than a technology company.” Source: RevenueBase Database · checked Sep 28, 2026
2	LTS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
3	Bti360	Strong evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	290 contacts →
	Strong evidence “BTI360 is a software development company based in the Washington DC area that provides big data software solutions to clients in the federal government.” Source: RevenueBase Database · checked Sep 28, 2026
4	Solerity	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	201-500	128 contacts →
	Indirect evidence “Since 1991, Solerity, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
5	Attainx, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	125 contacts →
	Partial evidence “AttainX is an SBA certified 8a / EDWOSB / WOSB and CMMI L3, ISO 9001:201, QMS certified company that delivers information technology solutions to Federal and state agencies.” Source: RevenueBase Database · checked Sep 28, 2026
6	Netcentrics	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	122 contacts →
	Indirect evidence “For 30 years, NetCentrics has excelled as an innovative technology solutions provider for the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
7	Foxhole Technology	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
8	Alku Government Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	102 contacts →
	Indirect evidence “ALKU Government Solutions is a National Security Defense Contractor serving the defense, energy, homeland security and intelligence communities.” Source: RevenueBase Database · checked Sep 28, 2026
9	Probity INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	97 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	Vivsoft	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Indirect evidence “Innovating the Public Sector with Cutting-Edge Technologies At VivSoft, we tackle complex public sector challenges with innovative solutions.” Source: RevenueBase Database · checked Sep 28, 2026
11	Makpar	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	87 contacts →
	Partial evidence “Makpar is a comprehensive professional and technical solutions provider for the Federal government.” Source: RevenueBase Database · checked Sep 28, 2026
12	Qvine Corporation	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	61 contacts →
	Partial 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 28, 2026
13	Etelligent Group	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	46 contacts →
	Partial evidence “15+ Years of Trusted IT Solutions for Federal Agencies- Data Security & Management: Safeguarding sensitive information with scalable, reliable solutions - Scalable Identity…” Source: RevenueBase Database · checked Sep 28, 2026
14	Synapse Business Systems, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	MKGCS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
16	Rssi Onezero Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	33 contacts →
	Partial 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 28, 2026
17	IP Network Solutions	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
18	Berryville Holdings, LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial 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 28, 2026
19	Byte Systems, LLC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “BYTE Systems is a Government focused Veteran Owned information technology services company.” Source: RevenueBase Database · checked Sep 28, 2026
20	KLC Network Services, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
21	Cortechs, Inc. DBA B12 Government Solutions	Strong evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Strong 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 28, 2026
22	The Reckon Crew	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect 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 28, 2026
23	Modern Government Solutions MGS	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
24	Nuix U.S. Government	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “Nuix USG protects, informs, and empowers U.S.” Source: RevenueBase Database · checked Sep 28, 2026
25	ISI Enterprises	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	5 contacts →
	Indirect evidence “A leader in security for government contractors, IsI offers end-to-end solutions that simplify the complex.” Source: RevenueBase Database · checked Sep 28, 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: iacm federal software 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 iacm federal software companies.
Partial evidence: Its own public description names part of iacm federal software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name iacm federal software 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 33 iacm federal software companies based in Herndon, United States

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Iacm federal software companies based in Herndon, United States at a glance

As of Sep 28, 2026

31.1%Verified-email coverage

353.9Average contacts per company

51-200Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 33 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 iacm federal software 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 “iacm federal software 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 iacm federal software 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 iacm federal software 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, 3,635 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 28, 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.

Iacm federal software 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 iacm federal software 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 iacm federal software companies are there based in Herndon, United States?

RevenueBase identified 33 iacm federal software 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 in the United States has the most iacm federal software companies?

Herndon leads the United States with 33 headquartered companies, followed by Reston (32) and Washington (31).

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 3,635 verified decision-maker contacts tracked across these 33 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 28, 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.