Company lists · Data refreshed September 2026

Top 25 Government software integrators based in the United States

Name: Government software integrators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,073 companies tracked

RevenueBase identified 2,073 government software integrators headquartered in the United States as of September 2026 and tracks 178,020 professional contacts across them, including 43,877 with verified work emails. Washington is the largest hub.

This list covers government software integrators headquartered in the 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

2,073Companies

178,020Contacts tracked

43,877Verified emails

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The 25 largest government software integrators based in the United States

Ranked by team size

Top 25 of 2,073 government software integrators based in the 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 software integrators: 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	General Dynamics Information Technology	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 28, 2026	10001+	23,974 contacts →
	Indirect evidence “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
2	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
3	Accenture Federal Services	Partial evidence	Arlington, VA, United StatesHQ checked Sep 28, 2026	10001+	9,125 contacts →
	Partial evidence “We power reinvention across the US federal government to help agencies deliver greater outcomes using proven commercial solutions, mission expertise, and new technologies – cloud…” Source: RevenueBase Database · checked Sep 28, 2026
4	Tyler Technologies	Partial evidence	Plano, TX, United StatesHQ checked Sep 28, 2026	5,001-10,000	6,842 contacts →
	Partial evidence “Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.” Source: RevenueBase Database · checked Sep 28, 2026
5	Carahsoft	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,945 contacts →
	Partial evidence “Carahsoft is The Trusted IT Solutions Provider®, supporting Federal, State, Local Government, Education, Healthcare and Private Sector industries.” Source: RevenueBase Database · checked Sep 28, 2026
6	LMI	Indirect evidence	Tysons, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,580 contacts →
	Indirect evidence “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Source: RevenueBase Database · checked Sep 28, 2026
7	Fast Enterprises, LLC	Strong evidence	Centennial, CO, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,363 contacts →
	Strong evidence “For 25+ years, we’ve transformed the way government agencies serve their communities, providing software that delivers superior customer experiences, greater flexibility, and…” Source: RevenueBase Database · checked Sep 28, 2026
8	Govcio	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,101 contacts →
	Partial evidence “GovCIO was founded with a single purpose- to transform government IT.” Source: RevenueBase Database · checked Sep 28, 2026
9	ASM Research	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,568 contacts →
	Partial evidence “ASM Research, an Accenture Federal Services Company, is an information solutions integrator and a leading provider of innovative technology solutions and advanced analytical…” Source: RevenueBase Database · checked Sep 28, 2026
10	Government Acquisitions	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 28, 2026	n/a	1,440 contacts →
	Partial evidence “Government Acquisitions, LLC (GAI) stands at the forefront of a transformative era, where artificial intelligence is reshaping our world and the stakes have never been higher.” Source: RevenueBase Database · checked Sep 28, 2026
11	Engility Corporation	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,245 contacts →
	Partial evidence “Engility Corporation is now part of SAIC, a premier technology integrator based in Reston, Virginia.” Source: RevenueBase Database · checked Sep 28, 2026
12	22nd Century Technologies INC	Strong evidence	Mclean, VA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,234 contacts →
	Strong evidence “22nd Century Technologies Inc,(22nd) is a mid-size Service Integrator, focused on providing IP enabled managed services and solutions to Federal, State and Local governments.” Source: RevenueBase Database · checked Sep 28, 2026
13	PPC	Indirect evidence	Trevose, PA, United StatesHQ checked Sep 28, 2026	201-500	979 contacts →
	Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 28, 2026
14	REI Systems	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 28, 2026	501-1,000	863 contacts →
	Indirect evidence “REI Systems delivers reliable and innovative technology solutions that empower federal, state, local, and nonprofit organizations to achieve their missions.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cognosante	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	829 contacts →
	Indirect evidence “At Cognosante, we help create a safe, healthy, more equitable nation for all.” Source: RevenueBase Database · checked Sep 28, 2026
16	I3 Verticals	Partial evidence	Nashville, TN, United StatesHQ checked Sep 28, 2026	1,001-5,000	823 contacts →
	Partial evidence “i3 Verticals seamlessly delivers integrated software and services to customers in Public Sector markets.” Source: RevenueBase Database · checked Sep 28, 2026
17	Calibre Systems, INC	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 28, 2026	501-1,000	768 contacts →
	Indirect evidence “CALIBRE Systems, Inc.(CALIBRE) is an employee-owned AI transformation company delivering mission focused solutions to Defense, Federal / Civil, and Commercial clients.” Source: RevenueBase Database · checked Sep 28, 2026
18	Systems Engineering Services Corporation Sesc	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	201-500	747 contacts →
	Partial evidence “Systems Engineering Services Corporation (SESC), founded in 1989, is a leading provider of technology solutions to Fortune companies and government organizations.” Source: RevenueBase Database · checked Sep 28, 2026
19	STG INC	Strong evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	700 contacts →
	Strong evidence “SOS International LLC (SOSi) is a family-owned, middle-market government services integrator that works principally in the defense and intelligence sectors.” Source: RevenueBase Database · checked Sep 28, 2026
20	TWO SIX Technologies	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 28, 2026	501-1,000	647 contacts →
	Indirect evidence “At Two Six Technologies, we build, deploy, and implement innovative products that solve the world’s most complex challenges today.” Source: RevenueBase Database · checked Sep 28, 2026
21	Salient Crgt	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	639 contacts →
	Indirect evidence “For over 20 years, Salient CRGT has upheld its mission to "empower our diverse, hard-working team to deliver high-value solutions that make positive impacts on missions and…” Source: RevenueBase Database · checked Sep 28, 2026
22	Planned Systems International	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	1,001-5,000	611 contacts →
	Partial evidence “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Tista Science And Technology Corporation	Partial evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	1,001-5,000	543 contacts →
	Partial evidence “Since 2005, TISTA has been a trusted partner with innovative IT solutions for the federal government.” Source: RevenueBase Database · checked Sep 28, 2026
24	Actionet, INC	Indirect evidence	Vienna, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	510 contacts →
	Indirect evidence “ActioNet, Inc, headquartered in Vienna, Virginia, is a CMMI®-DEV Level 4, CMMI®-SVC Level 4, ISO ISO 27001, ISO 9001, HDI-certified, woman-owned IT Solutions Provider with strong…” Source: RevenueBase Database · checked Sep 28, 2026
25	Accela	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 28, 2026	201-500	490 contacts →
	Partial evidence “Accela provides a unified suite of cloud solutions trusted by governments across the globe to accelerate their digital transformation, deliver vital services, and build stronger…” 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 software integrators. 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 software integrators.
Partial evidence: Its own public description names part of government software integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government software integrators. 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 2,073 government software integrators based in the United States

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Government software integrators based in the United States at a glance

As of Sep 28, 2026

24.6%Verified-email coverage

85.9Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · Washington

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

655

11-50

733

51-200

468

201-500

135

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,073 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 software integrators, 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 the United States whose own description of what they do matches “government software integrators”. 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 software integrators), 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 software integrators, and records with no verified work email. Companies headquartered outside United States 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, 43,877 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 software integrators by metro

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 software integrators, 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 software integrators are there based in the United States?

RevenueBase identified 2,073 government software integrators headquartered in the 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?

General Dynamics Information Technology, headquartered in Falls Church, tops this list with the largest team on record.

Which city has the most government software integrators?

Washington leads with 71 headquartered companies, followed by Reston (64) and Herndon (62).

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 43,877 verified decision-maker contacts tracked across these 2,073 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.