Company lists · Data refreshed September 2026

Top 25 Software outsourcing firms worldwide

Name: Software outsourcing firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 42,420 companies tracked

RevenueBase identified 42,420 software outsourcing firms worldwide as of September 2026 and tracks 833,458 professional contacts across them, including 213,130 with verified work emails and 55,134 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers software outsourcing firms 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 6, 2026. Country and city lists for software outsourcing firms 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 6, 2026 86% judged on-target in blind review

42,420Companies

833,458Contacts tracked

213,130Verified emails

55,134Mobile numbers

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The 25 largest software outsourcing firms worldwide

Ranked by team size

Top 25 of 42,420 software outsourcing firms worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to software outsourcing firms: 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	Partial evidence	Monterrey, MexicoHQ checked Sep 6, 2026	10001+	13,490 contacts →
	Partial evidence “At Softtek, we drive the strategic development of our clients through software engineering.” Source: RevenueBase Database · checked Sep 6, 2026
2	CDW	Indirect evidence	Vernon Hills, IL, United StatesHQ checked Sep 6, 2026	10001+	13,155 contacts →
	Indirect evidence “At CDW, we know how to make technology work so people can do great things.” Source: RevenueBase Database · checked Sep 6, 2026
3	HTC Global Services	Indirect evidence	Troy, MI, United StatesHQ checked Sep 6, 2026	10001+	8,866 contacts →
	Indirect evidence “HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.” Source: RevenueBase Database · checked Sep 6, 2026
4	Logica	Partial evidence	Montreal, QC, CanadaHQ checked Sep 6, 2026	10001+	7,416 contacts →
	Partial evidence “Logica is now part of CGI, a global IT and business process services provider delivering business consulting, systems integration and outsourcing services.” Source: RevenueBase Database · checked Sep 6, 2026
5	R Systems	Partial evidence	El Dorado Hills, CA, United StatesHQ checked Sep 6, 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 6, 2026
6	Atos Syntel	Indirect evidence	Troy, MI, United StatesHQ checked Sep 6, 2026	10001+	7,339 contacts →
	Indirect evidence “Atos\|Syntel is a leading global provider of integrated information technology and knowledge process services.” Source: RevenueBase Database · checked Sep 6, 2026
7	SII Poland	Indirect evidence	Warszawa, PolandHQ checked Sep 6, 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 6, 2026
8	Adesso SE	Indirect evidence	Dortmund, GermanyHQ checked Sep 6, 2026	5,001-10,000	5,332 contacts →
	Indirect evidence “The future belongs to companies that effectively translate agentic AI into value creation.” Source: RevenueBase Database · checked Sep 6, 2026
9	Matrix	Indirect evidence	Kfar Saba, IsraelHQ checked Sep 6, 2026	10001+	4,980 contacts →
	Indirect evidence “matrix is the leading technology services company, employing over professionals worldwide.” Source: RevenueBase Database · checked Sep 6, 2026
10	Lancesoft, INC	Indirect evidence	Herndon, VA, United StatesHQ checked Sep 6, 2026	5,001-10,000	4,877 contacts →
	Indirect evidence “Established in LanceSoft is a pioneer in delivering top-notch Global Workforce Solutions and IT Services to a diverse clientele.” Source: RevenueBase Database · checked Sep 6, 2026
11	CGS Computer Generated Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 6, 2026	5,001-10,000	4,608 contacts →
	Indirect evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 6, 2026
12	Liderança Serviços	Indirect evidence	São José, BrazilHQ checked Sep 6, 2026	10001+	4,504 contacts →
	Indirect evidence “Atuamos nos principais setores de terceirização, e somos pioneiros na implantação de contratos à distância.” Source: RevenueBase Database · checked Sep 6, 2026
13	Isoftstone	Indirect evidence	Plano, TX, United StatesHQ checked Sep 6, 2026	10001+	4,041 contacts →
	Indirect evidence “iSoftStone is a global IT service and consulting company that creates value and drives success through technology solutions, service excellence, and digital innovation.” Source: RevenueBase Database · checked Sep 6, 2026
14	Andersen LAB	Partial evidence	Warsaw, PolandHQ checked Sep 6, 2026	1,001-5,000	3,628 contacts →
	Partial 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 6, 2026
15	Iris Software INC	Partial evidence	Edison, NJ, United StatesHQ checked Sep 6, 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 6, 2026
16	Bairesdev	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	3,186 contacts →
	Partial evidence “BairesDev is your expert partner that works alongside clients to build high-quality software solutions with speed and precision.” Source: RevenueBase Database · checked Sep 6, 2026
17	Chetu, INC	Indirect evidence	Sunrise, FL, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,943 contacts →
	Indirect 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 6, 2026
18	Altron Digital Business	Indirect evidence	Johannesburg, South AfricaHQ checked Sep 6, 2026	1,001-5,000	2,877 contacts →
	Indirect evidence “Operate, optimise, and transform with the IT services company that offers the enterprise-grade solutions needed to grow your business.” Source: RevenueBase Database · checked Sep 6, 2026
19	Praxis	Partial evidence	MexicoHQ checked Sep 6, 2026	1,001-5,000	2,763 contacts →
	Partial evidence “Praxis is a company devoted to integration, consulting, nearshoring and software development.” Source: RevenueBase Database · checked Sep 6, 2026
20	Milestone Technologies, INC	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,698 contacts →
	Indirect evidence “Milestone Technologies is a global IT Services and Digital Solutions company based in Silicon Valley that helps hundreds of leading corporations deliver technology around the…” Source: RevenueBase Database · checked Sep 6, 2026
21	Astreya	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	2,215 contacts →
	Indirect evidence “Astreya is the leading IT solutions provider for some of the world's most recognizable and innovative organizations.” Source: RevenueBase Database · checked Sep 6, 2026
22	Ness Technologies נס טכנולוגיות	Indirect evidence	Raanana, IsraelHQ checked Sep 6, 2026	1,001-5,000	2,137 contacts →
	Indirect evidence “NESS is one of Israel’s leading companies in the field of information systems, having reached this status thanks to our employees.” Source: RevenueBase Database · checked Sep 6, 2026
23	Devsinc	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,932 contacts →
	Indirect evidence “We are a global organization with two state-of-the-art delivery centers in Southeast Asia and four strategically located offices across three continents.” Source: RevenueBase Database · checked Sep 6, 2026
24	Nous Infosystems	Indirect evidence	Edison, NJ, United StatesHQ checked Sep 6, 2026	1,001-5,000	1,926 contacts →
	Indirect evidence “Nous Infosystems is now.” Source: RevenueBase Database · checked Sep 6, 2026
25	PCS Technology Limited	Indirect evidence	Mumbai, IndiaHQ checked Sep 6, 2026	1,001-5,000	1,902 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 6, 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: software outsourcing firms. 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 software outsourcing firms.
Partial evidence: Its own public description names part of software outsourcing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software outsourcing firms. 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 42,420 software outsourcing firms worldwide

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Software outsourcing firms worldwide at a glance

As of Sep 6, 2026

25.6%Verified-email coverage

6.6%Mobile-number coverage

19.6Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · London

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

20,849

11-50

14,084

51-200

5,379

201-500

1,241

501-1,000

407

1,001-5,000

259

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 software outsourcing firms, 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: 41 countries, largest first: the United States, the United Kingdom, Brazil, Germany, Canada, Italy, France, Australia, Spain, Poland and 31 more. Country and city lists for software outsourcing firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “software outsourcing firms”. 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 software outsourcing firms), 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 software outsourcing firms, 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, 213,130 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 6, 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.

Software outsourcing firms by location

231 lists · largest first

Every Software outsourcing 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 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 software outsourcing firms, 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 software outsourcing firms are there worldwide?

RevenueBase identified 42,420 software outsourcing firms 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 software outsourcing firms?

The United States leads with 13,669 companies, followed by the United Kingdom (3,497) and Brazil (3,115). Every software outsourcing firms list by country and city is linked on this page.

Which city has the most software outsourcing firms?

London leads with 1369 headquartered companies, followed by Sao Paulo (669) and New York (526).

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 213,130 verified decision-maker contacts tracked across these 42,420 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 6, 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.