Company lists · Data refreshed September 2026

Top 25 Government systems integration firms worldwide

Name: Government systems integration firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 19,668 companies tracked

RevenueBase identified 19,668 company matches for government systems integration firms worldwide as of September 2026 and tracks 657,540 professional contacts across them, including 168,424 with verified work emails. The United States is the largest market and Dubai the largest hub.

This list covers company matches for government systems integration firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026. Country and city lists for government systems integration firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

19,668Companies

657,540Contacts tracked

168,424Verified emails

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The 25 largest government systems integration firms worldwide

Ranked by team size

Top 25 of 19,668 company matches for government systems integration firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Leidos	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	10001+	27,416 contacts →
	Exact match “Leidos is an industry and technology leader serving government & commercial customers with smarter, more efficient digital and mission innovations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	General Dynamics Information Technology	Exact match	Falls Church, VA, United StatesHQ recorded Sep 28, 2026	10001+	23,974 contacts →
	Exact match “GDIT is a global technology and professional services company that delivers solutions, technology and mission services to every major agency across the U.S.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Parsons Corporation	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	10001+	19,456 contacts →
	Exact match “Founded in 1944, Parsons Corporation, a digitally enabled solutions provider, is focused on creating the future of the defense, intelligence, and critical infrastructure markets.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Peraton	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	10001+	10,793 contacts →
	Exact match “At Peraton, we're at the forefront of delivering the next big thing every day.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	9,697 contacts →
	Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Tyler Technologies	Exact match	Plano, TX, United StatesHQ recorded Sep 28, 2026	5,001-10,000	6,842 contacts →
	Exact match “Tyler Technologies (NYSE: TYL) provides integrated software and technology services to the public sector.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Datacom	Exact match	Auckland, New ZealandHQ recorded Sep 28, 2026	5,001-10,000	5,958 contacts →
	Exact match “Customer focused values.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 28, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Cegeka	Exact match	Hasselt, BelgiumHQ recorded Sep 28, 2026	5,001-10,000	4,551 contacts →
	Exact match “The digital world moves fast.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Asrc Federal	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	4,542 contacts →
	Exact match “ASRC Federal’s employees provide solutions for more than 30 U.S.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Carahsoft	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,945 contacts →
	Exact match “Carahsoft is The Trusted IT Solutions Provider®, supporting Federal, State, Local Government, Education, Healthcare and Private Sector industries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Quest Software	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	3,206 contacts →
	Exact match “At Quest Software, we help organizations build modern, trusted foundations for AI.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	EJADA	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 28, 2026	1,001-5,000	3,050 contacts →
	Exact match “ejada is a leading technology solutions provider in the Middle East and North Africa (MENA) region, headquartered in Saudi Arabia since 2005.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	ATS Corporation	Exact match	Cambridge, ON, CanadaHQ recorded Sep 28, 2026	5,001-10,000	2,754 contacts →
	Exact match “HELPING ADVANCE THE FUTURE ATS Corporation is an industry-leading automation solutions provider to many of the world's most successful companies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Velocis Systems Private Limited	Exact match	Noida, IndiaHQ recorded Sep 28, 2026	1,001-5,000	2,637 contacts →
	Exact match “As one of India’s leading system integrators, Velocis partners with organizations to turn technology into a catalyst for measurable business value.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	LMI	Exact match	Tysons, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	2,580 contacts →
	Exact match “LMI is a new breed of digital solutions provider, disrupting the traditional govcon model with commercial-grade technology that is ready day-one.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Allied Digital	Exact match	Mumbai, IndiaHQ recorded Sep 28, 2026	1,001-5,000	2,475 contacts →
	Exact match “Allied Digital Services is a globally recognized leader in Digital Transformation and a Master Systems Integrator, with over four decades of proven experience.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	SVA System Vertrieb Alexander Gmbh	Exact match	Wiesbaden, GermanyHQ recorded Sep 28, 2026	1,001-5,000	2,452 contacts →
	Exact match “Imprint: SVA is one of the leading system integrators in Germany.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	CS Group	Exact match	Le Plessis Robinson, FranceHQ recorded Sep 28, 2026	5,001-10,000	2,092 contacts →
	Exact match “Expert des systèmes critiques Conception, réalisation, déploiement & maintenance de systèmes critiques, basés sur des solutions et des produits innovants, garantissant…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Diyar United Company	Exact match	Kuwait City, KuwaitHQ recorded Sep 28, 2026	1,001-5,000	1,980 contacts →
	Exact match “Since its inception in 1980, Diyar United has been in the business of providing innovative Information Technology solutions, products and services in state of Kuwait.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Giza Systems	Exact match	Cairo, EgyptHQ recorded Sep 28, 2026	1,001-5,000	1,975 contacts →
	Exact match “pulse by solutions (formerly known as Giza Systems Group) is the trusted global force behind critical industries, deploying the Intelligence That Transforms to accelerate digital…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	DCS Corp	Exact match	Alexandria, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,898 contacts →
	Exact match “DCS delivers advanced technology and management solutions to Government agencies in the national security sector.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	SOSI	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,859 contacts →
	Exact match “Founded in 1989 and headquartered in Reston, Virginia, SOSi is a private, founder-led defense and government solutions firm specializing in advanced technology systems and mission…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	IES Communications	Exact match	Tempe, AZ, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,800 contacts →
	Exact match “IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Perspecta	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	10001+	1,753 contacts →
	Exact match “At Perspecta we question, we seek and we solve.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “government systems integration firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 19,668 government systems integration firms worldwide

See the full list, filter by size, metro and specialty, and access 168,424 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Government systems integration firms worldwide at a glance

As of Sep 28, 2026

25.6%Verified-email coverage

33.4Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · Dubai

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

7,190

11-50

7,818

51-200

3,288

201-500

818

501-1,000

276

1,001-5,000

169

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for government systems integration firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “government systems integration firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 168,424 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Government systems integration firms by location

140 lists · largest first

Every Government systems integration firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “government systems integration firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many government systems integration firms are there worldwide?

RevenueBase identified 19,668 company matches for government systems integration firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Leidos tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most government systems integration firms?

The United States leads with 6,041 companies, followed by India (1,568) and Italy (577). Every government systems integration firms list by country and city is linked on this page.

Which city has the most government systems integration firms?

Dubai leads with 227 company records, followed by Washington (182) and Riyadh (155).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 168,424 professional contacts with verified work emails tracked across these 19,668 companies; direct dials are available where recorded.

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 SmartSearch, 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.