Company lists · Data refreshed September 2026

Top 25 Government IT services based in Herndon, United States

Name: Government IT services 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 80 companies tracked

RevenueBase identified 80 government IT services headquartered in Herndon, United States as of September 2026 and tracks 14,312 professional contacts across them, including 4,421 with verified work emails. Across the United States, Washington is the largest hub for this category (157 companies); Herndon has 80.

This list covers government IT services 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

80Companies

14,312Contacts tracked

4,421Verified emails

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The 25 largest government IT services based in Herndon, United States

Ranked by team size

Top 25 of 80 government IT services 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 government IT services: 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	Iron BOW Technologies	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	501-1,000	841 contacts →
	Partial evidence “We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.” Source: RevenueBase Database · checked Sep 28, 2026
3	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
4	TD Synnex Public Sector	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	201-500	292 contacts →
	Indirect evidence “For more than 30 years, TD SYNNEX Public Sector has been dedicated to accelerating public sector growth for technology companies.” Source: RevenueBase Database · checked Sep 28, 2026
5	Karsun Solutions	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	201-500	282 contacts →
	Indirect evidence “Karsun Solutions is a fast-growing, innovative, enterprise modernization firm.” Source: RevenueBase Database · checked Sep 28, 2026
6	Netimpact Strategies INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	201-500	254 contacts →
	Partial evidence “NetImpact has been a Trusted Advisor driving impact through digital transformation for the Federal Government for over a decade.” Source: RevenueBase Database · checked Sep 28, 2026
7	Pcm-G	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	176 contacts →
	Partial evidence “PCM-G is a division of Insight Enterprises, Inc.\| Together, we’ll help you navigate complex IT challenges.” Source: RevenueBase Database · checked Sep 28, 2026
8	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
9	EMW	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	127 contacts →
	Indirect evidence “EMW was founded in 1995 by engineers and managers who formerly held senior positions in well known telecommunications and information technology companies to pursue their vision…” Source: RevenueBase Database · checked Sep 28, 2026
10	Attainx, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	125 contacts →
	Indirect 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
11	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
12	Nextpoint Group	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 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 28, 2026
13	Foxhole Technology	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	117 contacts →
	Indirect 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
14	Indigo IT LLC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	101 contacts →
	Partial evidence “Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Source: RevenueBase Database · checked Sep 28, 2026
15	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
16	Four INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
17	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
18	Ascella Technologies, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	71 contacts →
	Partial evidence “Who We Are Ascella's founders are all veterans of the IT industry.” Source: RevenueBase Database · checked Sep 28, 2026
19	Akima Global Technology	Strong evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	68 contacts →
	Strong evidence “Akima Global Technology is a technology solutions, program management and support company that collaborates with technology partners and the Federal Government to deliver IT…” Source: RevenueBase Database · checked Sep 28, 2026
20	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
21	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
22	Lore Systems	Strong evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	43 contacts →
	Strong evidence “Lore Systems has been providing IT professional services (managed services, network engineering, hosting and colocation, cloud computing) to hundreds of government, commercial…” Source: RevenueBase Database · checked Sep 28, 2026
23	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
24	IT Partners, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	51-200	34 contacts →
	Partial evidence “Privately held and founded in 1993, IT Partners Inc.” Source: RevenueBase Database · checked Sep 28, 2026
25	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

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: government IT services. 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 government IT services.
Partial evidence: Its own public description names part of government IT services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government IT services. 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 80 government IT services based in Herndon, United States

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Government IT services based in Herndon, United States at a glance

As of Sep 28, 2026

30.9%Verified-email coverage

178.9Average contacts per company

51-200Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 80 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 government IT services, 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 “government IT services”. 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 government IT services), 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 government IT services, 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, 4,421 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.

Government IT services 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 government IT services, 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 government IT services are there based in Herndon, United States?

RevenueBase identified 80 government IT services 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 government IT services?

Washington leads the United States with 157 headquartered companies, followed by Reston (118) and New York (81). Herndon has 80.

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 4,421 verified decision-maker contacts tracked across these 80 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.