Company lists · Data refreshed September 2026

Top 25 Government software services based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,030 companies tracked

RevenueBase identified 1,030 government software services headquartered in the United States as of September 2026 and tracks 39,375 professional contacts across them, including 15,751 with verified work emails. Washington is the largest hub.

This list covers government software services 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 21, 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 21, 2026 86% judged on-target in blind review

1,030Companies

39,375Contacts tracked

15,751Verified emails

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The 25 largest government software services based in the United States

Ranked by team size

Top 25 of 1,030 government software services based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to government software 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	Tyler Technologies	Partial evidence	Plano, TX, United StatesHQ checked Sep 21, 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 21, 2026
2	Fast Enterprises, LLC	Strong evidence	Centennial, CO, United StatesHQ checked Sep 21, 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 21, 2026
3	Govcio	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 21, 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 21, 2026
4	Perspecta	Indirect evidence	Chantilly, VA, United StatesHQ checked Sep 21, 2026	10001+	1,753 contacts →
	Indirect evidence “At Perspecta we question, we seek and we solve.” Source: RevenueBase Database · checked Sep 21, 2026
5	Civicplus	Partial evidence	Manhattan, KS, United StatesHQ checked Sep 21, 2026	501-1,000	907 contacts →
	Partial evidence “CivicPlus is the only government technology company exclusively committed to powering and empowering governments to efficiently operate, serve, and govern through the use of our…” Source: RevenueBase Database · checked Sep 21, 2026
6	REI Systems	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 21, 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 21, 2026
7	I3 Verticals	Partial evidence	Nashville, TN, United StatesHQ checked Sep 21, 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 21, 2026
8	Neogov	Partial evidence	El Segundo, CA, United StatesHQ checked Sep 21, 2026	501-1,000	674 contacts →
	Partial evidence “For over 25 years, NEOGOV has been at the forefront of public-sector innovation, building technology that helps government and education organizations work smarter, move faster…” Source: RevenueBase Database · checked Sep 21, 2026
9	Salient Crgt	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 21, 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 21, 2026
10	Accela	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 21, 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 21, 2026
11	Clarity	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	460 contacts →
	Partial evidence “Clarity Innovations designs, develops, and deploys force-enhancing software that links human ingenuity to powerful computing and makes our country and our world a better, safer…” Source: RevenueBase Database · checked Sep 21, 2026
12	FEI Systems	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	501-1,000	418 contacts →
	Indirect evidence “FEI Systems is a leading information technology, services, and analysis organization.” Source: RevenueBase Database · checked Sep 21, 2026
13	Argusoft	Partial evidence	Newark, CA, United StatesHQ checked Sep 21, 2026	201-500	413 contacts →
	Partial evidence “Argusoft is a software solution design company.” Source: RevenueBase Database · checked Sep 21, 2026
14	Softrams, A Tria Federal Company	Indirect evidence	Arlington, VA, United StatesHQ checked Sep 21, 2026	1,001-5,000	405 contacts →
	Indirect evidence “Softrams, a Tria Federal company builds innovative technology solutions and customer-centric services that are simple, intuitive, and usable across federal industries.” Source: RevenueBase Database · checked Sep 21, 2026
15	Unison	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	349 contacts →
	Partial evidence “Unison’s products power the business of government to work smoother and smarter.” Source: RevenueBase Database · checked Sep 21, 2026
16	Mindex	Partial evidence	Rochester, NY, United StatesHQ checked Sep 21, 2026	201-500	349 contacts →
	Partial evidence “Mindex is a technology solutions company that helps organizations solve complex business challenges through software engineering, data and AI, cloud modernization, staff…” Source: RevenueBase Database · checked Sep 21, 2026
17	AD HOC LLC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	501-1,000	333 contacts →
	Partial evidence “Ad Hoc is a digital services company that helps the federal government better serve people.” Source: RevenueBase Database · checked Sep 21, 2026
18	Aptive	Partial evidence	Alexandria, VA, United StatesHQ checked Sep 21, 2026	501-1,000	300 contacts →
	Partial evidence “Aptive is a public service delivery partner for the federal government.” Source: RevenueBase Database · checked Sep 21, 2026
19	Capitol Bridge	Partial evidence	Arlington, VA, United StatesHQ checked Sep 21, 2026	51-200	289 contacts →
	Partial evidence “Capitol Bridge is a leading services provider for State and Federal government customers” Source: RevenueBase Database · checked Sep 21, 2026
20	Sungard Public Sector	Indirect evidence	Lake Mary, FL, United StatesHQ checked Sep 21, 2026	501-1,000	281 contacts →
	Indirect evidence “SunGard Public Sector is now Superion.” Source: RevenueBase Database · checked Sep 21, 2026
21	Unicom Government INC	Partial evidence	Chantilly, VA, United StatesHQ checked Sep 21, 2026	201-500	279 contacts →
	Partial evidence “UNICOM Government, A Division of UNICOM Global, is a leading provider of technology solutions to federal, state, and local governments.” Source: RevenueBase Database · checked Sep 21, 2026
22	Intellidyne, LLC	Partial evidence	Vienna, VA, United StatesHQ checked Sep 21, 2026	201-500	256 contacts →
	Partial evidence “IntelliDyne is a leading government information technology firm enabling better mission performance through innovative technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026
23	Computronix	Indirect evidence	Lakewood, CO, United StatesHQ checked Sep 21, 2026	51-200	217 contacts →
	Indirect evidence “At Computronix, we value strong relationships with our clients.” Source: RevenueBase Database · checked Sep 21, 2026
24	Synergy International Systems	Strong evidence	Mclean, VA, United StatesHQ checked Sep 21, 2026	201-500	215 contacts →
	Strong evidence “Synergy International Systems, Inc.(Synergy) is a purpose-driven, specialized software company that helps government and nonprofit institutions worldwide achieve their desired…” Source: RevenueBase Database · checked Sep 21, 2026
25	CIVIX	Strong evidence	Metairie, LA, United StatesHQ checked Sep 21, 2026	201-500	211 contacts →
	Strong evidence “Civix is a leading provider of government technology solutions, specializing in business services, elections, ethics, and grants management software.” Source: RevenueBase Database · checked Sep 21, 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 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 software services.
Partial evidence: Its own public description names part of government software services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government software 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 1,030 government software services based in the United States

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Government software services based in the United States at a glance

As of Sep 21, 2026

40.0%Verified-email coverage

38.2Average contacts per company

11-50Median size (employees)

2.8%Largest-city concentration · Washington

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

455

11-50

349

51-200

152

201-500

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 1,030 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 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 the United States whose own description of what they do matches “government software 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 software 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 software services, 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, 15,751 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 21, 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 services by metro

Government software services in Washington29

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 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 software services are there based in the United States?

RevenueBase identified 1,030 government software services 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?

Tyler Technologies, headquartered in Plano, tops this list with the largest team on record.

Which city has the most government software services?

Washington leads with 29 headquartered companies, followed by Herndon (17) and New York (16).

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 15,751 verified decision-maker contacts tracked across these 1,030 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 21, 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.