Company lists · Data refreshed September 2026

Top 25 Government custom software development companies worldwide

Name: Government custom software development companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 5,780 companies tracked

RevenueBase identified 5,780 government custom software development companies worldwide as of September 2026 and tracks 87,721 professional contacts across them, including 23,557 with verified work emails. The United States is the largest market and London the largest hub.

This list covers government custom software development companies worldwide, 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 27, 2026. Country and city lists for government custom software development companies follow the table.

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 27, 2026 86% judged on-target in blind review

5,780Companies

87,721Contacts tracked

23,557Verified emails

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The 25 largest government custom software development companies worldwide

Ranked by team size

Top 25 of 5,780 government custom software development companies worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to government custom software development 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	Tyler Technologies	Partial evidence	Plano, TX, United StatesHQ checked Sep 27, 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 27, 2026
2	Civica	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	5,001-10,000	2,853 contacts →
	Partial evidence “We’re Civica and we make software that helps deliver critical services for citizens all around the world.” Source: RevenueBase Database · checked Sep 27, 2026
3	Fast Enterprises, LLC	Strong evidence	Centennial, CO, United StatesHQ checked Sep 27, 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 27, 2026
4	Contour Software	Partial evidence	Karachi, PakistanHQ checked Sep 27, 2026	1,001-5,000	2,109 contacts →
	Partial evidence “Contour Software is a wholly owned subsidiary of Constellation Software CSI acquires, manages, and builds market-leading vertical market software (“VMS”) businesses that develop…” Source: RevenueBase Database · checked Sep 27, 2026
5	Systematic	Partial evidence	Aarhus C, DenmarkHQ checked Sep 27, 2026	1,001-5,000	1,180 contacts →
	Partial evidence “Systematic is Denmark's largest privately owned software company and has been developing IT solutions since 1985.” Source: RevenueBase Database · checked Sep 27, 2026
6	Arhs Group	Indirect evidence	Belvaux Luxembourg, LuxembourgHQ checked Sep 27, 2026	1,001-5,000	911 contacts →
	Indirect evidence “Arηs Group, Part of Accenture - is a market leader in the management of complex IT projects and systems.” Source: RevenueBase Database · checked Sep 27, 2026
7	I3 Verticals	Strong evidence	Nashville, TN, United StatesHQ checked Sep 27, 2026	1,001-5,000	823 contacts →
	Strong evidence “i3 Verticals seamlessly delivers integrated software and services to customers in Public Sector markets.” Source: RevenueBase Database · checked Sep 27, 2026
8	Betha Sistemas	Partial evidence	Criciúma, BrazilHQ checked Sep 27, 2026	501-1,000	789 contacts →
	Partial evidence “Líder no desenvolvimento e comercialização de softwares para gestão pública, a Betha Sistemas é uma empresa catarinense que atua há 27 anos no mercado nacional.” Source: RevenueBase Database · checked Sep 27, 2026
9	European Dynamics	Partial evidence	Athens, GreeceHQ checked Sep 27, 2026	1,001-5,000	746 contacts →
	Partial evidence “EUROPEAN DYNAMICS is a leading Information Technologies service provider and software developer in the field of eGovernment, operating internationally as a group of companies…” Source: RevenueBase Database · checked Sep 27, 2026
10	Neogov	Partial evidence	El Segundo, CA, United StatesHQ checked Sep 27, 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 27, 2026
11	Squadra Digital	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 27, 2026	501-1,000	541 contacts →
	Partial evidence “Há mais de 21 anos no mercado de Tecnologia da Informação, a Squadra atua com desenvolvimento de software de altíssima qualidade, focando em estruturas técnica e comercial…” Source: RevenueBase Database · checked Sep 27, 2026
12	IDOX	Strong evidence	Woking, United KingdomHQ checked Sep 27, 2026	501-1,000	535 contacts →
	Strong evidence “Idox group's specialist software solutions power the performance of government and industry, driving productivity and a better experience for everyone.” Source: RevenueBase Database · checked Sep 27, 2026
13	Accela	Partial evidence	San Ramon, CA, United StatesHQ checked Sep 27, 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 27, 2026
14	Softrams, A Tria Federal Company	Partial evidence	Arlington, VA, United StatesHQ checked Sep 27, 2026	1,001-5,000	405 contacts →
	Partial 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 27, 2026
15	Intervest Software Technologies Private Limited	Strong evidence	Colombo, Sri LankaHQ checked Sep 27, 2026	501-1,000	402 contacts →
	Strong evidence “Intervest specializes in software development and providing IT support services delivering innovative, cost effective, high-quality custom-built software solutions based on a…” Source: RevenueBase Database · checked Sep 27, 2026
16	Chargoon - چارگون	Indirect evidence	Tehran, IranHQ checked Sep 27, 2026	501-1,000	400 contacts →
	Indirect evidence “شرکت چارگون، مجموعهای نوآور در ارائه راهکارهای نرمافزاری سازمانی است که از سال ۱۳۷۷ با هدف ارائه خدمات مطابق با استانداردهای جهانی و تکیه بر دانش روز، فعالیت خود را آغاز کرده است.” Source: RevenueBase Database · checked Sep 27, 2026
17	AD HOC LLC	Partial evidence	Mclean, VA, United StatesHQ checked Sep 27, 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 27, 2026
18	Integrated Solutions For Systems, Inc. Is4s	Strong evidence	Huntsville, AL, United StatesHQ checked Sep 27, 2026	201-500	326 contacts →
	Strong evidence “IS4S was founded by experienced engineers and managers who realize the need to ensure that our government, military, and commercial customers have an alternative to the defense…” Source: RevenueBase Database · checked Sep 27, 2026
19	Northgate Public Services	Partial evidence	Hemel Hempstead, United KingdomHQ checked Sep 27, 2026	1,001-5,000	321 contacts →
	Partial evidence “We're now NEC Software Solutions.” Source: RevenueBase Database · checked Sep 27, 2026
20	Informatics	Indirect evidence	Colombo, Sri LankaHQ checked Sep 27, 2026	201-500	307 contacts →
	Indirect evidence “An Information Technology Company with a backing of nearly four decades worth of experience.” Source: RevenueBase Database · checked Sep 27, 2026
21	Toppan Ecquaria	Strong evidence	SingaporeHQ checked Sep 27, 2026	201-500	297 contacts →
	Strong evidence “TOPPAN Ecquaria is a leading global provider of digital government software and solutions.” Source: RevenueBase Database · checked Sep 27, 2026
22	TD Synnex Public Sector	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 27, 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 27, 2026
23	Tron Informática	Indirect evidence	Goiânia, BrazilHQ checked Sep 27, 2026	201-500	290 contacts →
	Indirect evidence “Mais do que desenvolver sistemas, a Tron Informática sempre se preocupou em desenvolver soluções que proporcionem resultados para quem as utilizam.” Source: RevenueBase Database · checked Sep 27, 2026
24	Sungard Public Sector	Indirect evidence	Lake Mary, FL, United StatesHQ checked Sep 27, 2026	501-1,000	281 contacts →
	Indirect evidence “SunGard Public Sector is now Superion.” Source: RevenueBase Database · checked Sep 27, 2026
25	Netcad	Partial evidence	Çankaya, TürkiyeHQ checked Sep 27, 2026	201-500	277 contacts →
	Partial evidence “Founded in 1989 in Ankara, Netcad began its journey as the first local software company to pioneer the digitization of spatial data.” Source: RevenueBase Database · checked Sep 27, 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 custom software development 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 government custom software development companies.
Partial evidence: Its own public description names part of government custom software development companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government custom software development 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 5,780 government custom software development companies worldwide

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Government custom software development companies worldwide at a glance

As of Sep 27, 2026

26.9%Verified-email coverage

15.2Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

3,198

11-50

1,907

51-200

484

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 custom software development 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.
Coverage: Every country. Country and city lists for government custom software development companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “government custom software development 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 government custom software development 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 government custom software development companies, and records with no verified work email.
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, 23,557 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 27, 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 custom software development companies by location

26 lists · largest first

Every Government custom software development companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 custom software development 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 government custom software development companies are there worldwide?

RevenueBase identified 5,780 government custom software development companies worldwide 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 country has the most government custom software development companies?

The United States leads with 794 companies, followed by India (448) and Brazil (390). Every government custom software development companies list by country and city is linked on this page.

Which city has the most government custom software development companies?

London leads with 50 headquartered companies, followed by Sao Paulo (50) and Dhaka (35).

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 23,557 verified decision-maker contacts tracked across these 5,780 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 27, 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.