Company lists · Data refreshed September 2026

Top 25 Customized software development services worldwide

Name: Customized software development services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 38,165 companies tracked

RevenueBase identified 38,165 customized software development services worldwide as of September 2026 and tracks 428,821 professional contacts across them, including 123,147 with verified work emails and 25,599 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers customized software development services 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 24, 2026. Country and city lists for customized software development services 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 24, 2026 86% judged on-target in blind review

38,165Companies

428,821Contacts tracked

123,147Verified emails

25,599Mobile numbers

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The 25 largest customized software development services worldwide

Ranked by team size

Top 25 of 38,165 customized software development services worldwide, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to customized software development 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	Softtek	Strong evidence	Monterrey, MexicoHQ checked Sep 24, 2026	10001+	13,490 contacts →
	Strong evidence “At Softtek, we drive the strategic development of our clients through software engineering.” Source: RevenueBase Database · checked Sep 24, 2026
2	R Systems	Partial evidence	El Dorado Hills, CA, United StatesHQ checked Sep 24, 2026	5,001-10,000	7,360 contacts →
	Partial evidence “RSI is a trusted software engineering and digital transformation services partner to global enterprises navigating technological change.” Source: RevenueBase Database · checked Sep 24, 2026
3	Epicor	Indirect evidence	Austin, TX, United StatesHQ checked Sep 24, 2026	1,001-5,000	5,802 contacts →
	Indirect evidence “We’re here for the hard-working businesses that keep the world turning.” Source: RevenueBase Database · checked Sep 24, 2026
4	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 24, 2026	5,001-10,000	5,519 contacts →
	Indirect evidence “With over 7 500 Power People, Sii is Poland’s #1 partner for technology consulting, AI-driven digital transformation, engineering, and business services, empowering companies to…” Source: RevenueBase Database · checked Sep 24, 2026
5	Dataart	Partial evidence	New York, NY, United StatesHQ checked Sep 24, 2026	5,001-10,000	5,249 contacts →
	Partial evidence “DataArt is a global software engineering firm that delivers breakthrough data, analytics, and AI platforms for the world’s most demanding organizations.” Source: RevenueBase Database · checked Sep 24, 2026
6	Software AG	Partial evidence	Darmstadt, GermanyHQ checked Sep 24, 2026	n/a	4,127 contacts →
	Partial evidence “Software AG has been helping enterprises run and evolve their core business applications for over 50 years.” Source: RevenueBase Database · checked Sep 24, 2026
7	Andersen LAB	Strong evidence	Warsaw, PolandHQ checked Sep 24, 2026	1,001-5,000	3,628 contacts →
	Strong evidence “Andersen – your global software development partner Andersen is a global software development company with over 18 years of experience supporting businesses worldwide in their…” Source: RevenueBase Database · checked Sep 24, 2026
8	Iris Software INC	Partial evidence	Edison, NJ, United StatesHQ checked Sep 24, 2026	1,001-5,000	3,421 contacts →
	Partial evidence “Iris Software has been a trusted software engineering partner to several Fortune 500 companies for over three decades.” Source: RevenueBase Database · checked Sep 24, 2026
9	Chetu, INC	Partial evidence	Sunrise, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,943 contacts →
	Partial evidence “Chetu is your seamless backend technology partner, helping startups, SMBs, and Fortune companies accelerate development of desktop, mobile, and web apps with on-demand developers…” Source: RevenueBase Database · checked Sep 24, 2026
10	People Tech Group INC	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 24, 2026	1,001-5,000	2,434 contacts →
	Indirect evidence “People Tech Group is a leading Enterprise Solutions, Digital Transformation, Data Intelligence, and Modern Operation services provider.” Source: RevenueBase Database · checked Sep 24, 2026
11	ELEKS	Partial evidence	Tallinn, EstoniaHQ checked Sep 24, 2026	1,001-5,000	1,878 contacts →
	Partial evidence “ELEKS, a trusted partner for guaranteed software engineering excellence, quality, and transparency every step of the way.” Source: RevenueBase Database · checked Sep 24, 2026
12	Exadel	Strong evidence	Walnut Creek, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,874 contacts →
	Strong evidence “Exadel is a leading global software consulting and development company that looks beyond the code to maximize the technology-driven business impact our partners want to make.” Source: RevenueBase Database · checked Sep 24, 2026
13	Fincons Group	Indirect evidence	Vimercate, ItalyHQ checked Sep 24, 2026	1,001-5,000	1,870 contacts →
	Indirect evidence “With more than 40 years of experience in IT Business Consulting and System Integration, Fincons Group partners with clients to support business growth through innovation.” Source: RevenueBase Database · checked Sep 24, 2026
14	Itransition Group	Partial evidence	Decatur, GA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,664 contacts →
	Partial evidence “Founded in 1998, Itransition is a global software engineering and IT consulting company with engineers supporting clients across 40 countries.” Source: RevenueBase Database · checked Sep 24, 2026
15	Leverx	Indirect evidence	Miami, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,632 contacts →
	Indirect evidence “LeverX is an SAP Gold Partner, SAP Global Strategic Supplier, and enterprise solutions provider for businesses worldwide, including companies from the Fortune 500 list.” Source: RevenueBase Database · checked Sep 24, 2026
16	Dotsquares	Indirect evidence	London, United KingdomHQ checked Sep 24, 2026	501-1,000	1,581 contacts →
	Indirect evidence “We leverage the latest web and mobile technologies to build, grow and support your business.” Source: RevenueBase Database · checked Sep 24, 2026
17	IGA	Indirect evidence	Malakoff, FranceHQ checked Sep 24, 2026	n/a	1,530 contacts →
	Indirect evidence “Métiers - Edition de composants/modules logiciels pour les métiers de l’assurance, du voyage et du négoce- Création de solutions spécifiques pour le compte des clients- Suivi et…” Source: RevenueBase Database · checked Sep 24, 2026
18	Evosoft	Partial evidence	Nürnberg, GermanyHQ checked Sep 24, 2026	1,001-5,000	1,519 contacts →
	Partial evidence “The evosoft Group is an international system house that has developed custom-made software solutions since 1995.” Source: RevenueBase Database · checked Sep 24, 2026
19	Mobile Programming	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,462 contacts →
	Partial evidence “Mobile Programming LLC was started with the mission to provide “Economic as well as Efficient” software solutions.” Source: RevenueBase Database · checked Sep 24, 2026
20	Pragma	Strong evidence	Miami, FL, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,416 contacts →
	Strong evidence “Pragma is a Custom Software Development and Digital Transformation company founded 30 years ago to improve people's lives by transforming businesses.” Source: RevenueBase Database · checked Sep 24, 2026
21	ICC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 24, 2026	501-1,000	1,416 contacts →
	Indirect evidence “User First.” Source: RevenueBase Database · checked Sep 24, 2026
22	Trigent Software INC	Strong evidence	Southborough, MA, United StatesHQ checked Sep 24, 2026	1,001-5,000	1,379 contacts →
	Strong evidence “Trigent is a global leader in software solutions, headquartered in Southborough, MA, with development centers in Boston, Bangalore.” Source: RevenueBase Database · checked Sep 24, 2026
23	V Group INC	Indirect evidence	Cranbury, NJ, United StatesHQ checked Sep 24, 2026	n/a	1,347 contacts →
	Indirect evidence “Since V Group Inc.” Source: RevenueBase Database · checked Sep 24, 2026
24	HIQ	Strong evidence	Stockholm, SwedenHQ checked Sep 24, 2026	1,001-5,000	1,228 contacts →
	Strong evidence “HiQ is a tech consulting company focused on custom software development, positioned at the intersection of digital transformation and specialized engineering.” Source: RevenueBase Database · checked Sep 24, 2026
25	BBD	Partial evidence	Rosebank, South AfricaHQ checked Sep 24, 2026	1,001-5,000	1,225 contacts →
	Partial evidence “Welcome to BBD – where experience, innovation and software engineering excellence come together.” Source: RevenueBase Database · checked Sep 24, 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: customized software development 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 customized software development services.
Partial evidence: Its own public description names part of customized software development services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customized software development 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 38,165 customized software development services worldwide

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Customized software development services worldwide at a glance

As of Sep 24, 2026

28.7%Verified-email coverage

6.0%Mobile-number coverage

11.2Average contacts per company

1-10Median size (employees)

2.8%Largest-city concentration · London

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

25,246

11-50

13,320

51-200

3,870

201-500

735

501-1,000

206

1,001-5,000

104

5,001-10,000

10001+

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 customized software development 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.
Coverage: 45 countries, largest first: the United States, the United Kingdom, Germany, Brazil, Canada, Spain, Australia, the Netherlands, Italy, France and 35 more. Country and city lists for customized software development services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “customized software development 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 customized software development 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 customized software development services, 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, 123,147 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 24, 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.

Customized software development services by location

228 lists · largest first

Every Customized software development services 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 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 customized software development 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 customized software development services are there worldwide?

RevenueBase identified 38,165 customized software development services 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?

Softtek, headquartered in Monterrey, tops this list with the largest team on record.

Which country has the most customized software development services?

The United States leads with 8,922 companies, followed by the United Kingdom (4,251) and Germany (2,795). Every customized software development services list by country and city is linked on this page.

Which city has the most customized software development services?

London leads with 1071 headquartered companies, followed by Sao Paulo (686) and New York (604).

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 123,147 verified decision-maker contacts tracked across these 38,165 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 24, 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.