Company lists · Data refreshed September 2026
Top 25 IT support outsourcing companies worldwide
RevenueBase identified 29,910 IT support outsourcing companies worldwide as of September 2026 and tracks 349,053 professional contacts across them, including 77,418 with verified work emails. The United States is the largest market and London the largest hub.
This list covers IT support outsourcing 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 21, 2026. Country and city lists for IT support outsourcing 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.
The 25 largest IT support outsourcing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,122 contacts → | ||||
Strong evidence “We are a fast-growing BPO & IT outsourcing firm with a team of 2500+ people passionate about data and technology.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,447 contacts → | ||||
Partial evidence “Technology is mission-critical to your business so it must work, continuously.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,414 contacts → | ||||
Partial evidence “Há mais de 20 anos, tornamos a vida do nosso cliente mais fácil, com soluções em outsourcing de equipamentos de TI que oferecem uma rotina mais estratégica e sustentável para as…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,347 contacts → | ||||
Indirect evidence “CTIS, a SONDA Group company, is recognized as one of the largest and most important Brazilian information technology companies.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,133 contacts → | ||||
Strong evidence “Aforeserve delivers IT infrastructure services, field support, and managed operations for enterprises across India.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,008 contacts → | ||||
Indirect evidence “Moder was founded in December 2020, with the mission to positively impact the financial health of companies in need by powering their in-house processes using top talent, workflow…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,979 contacts → | ||||
Indirect evidence “Regardless of your Company’s size (from Start-ups to Fortune 500), business vertical or service requirements, we act as a seamless extension of your team to help you grow, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,711 contacts → | ||||
Partial evidence “SupportNinja provides customer experience and back-office support services for tech companies and startups around the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,606 contacts → | ||||
Strong evidence “SunTec, a multi-process IT outsourcing company, offers a complete bouquet of services for mobile, web, data solutions, ePublishing, eCommerce and digital marketing.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,587 contacts → | ||||
Strong evidence “NNIT is an international IT service provider offering IT consultancy and the development, implementation and outsourcing of IT services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,484 contacts → | ||||
Indirect evidence “At RDI, we believe in winning smart by providing customized, strategic solutions to our clients.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,432 contacts → | ||||
Partial evidence “Thrive is a NextGen 3.0 global technology outsourcing provider that empowers small and mid-market organizations to transform their technology into a strategic advantage.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,275 contacts → | ||||
Strong evidence “Gemini Solutions is a global IT firm, a leading offshore outsourcing company with a specialized focus in financial services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,203 contacts → | ||||
Indirect evidence “At Marco, we're all about making technology work for you (and not the other way around).” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,063 contacts → | ||||
Partial evidence “Technology only matters when it helps the business run better.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,053 contacts → | ||||
Strong evidence “We are the leading company nationwide in support services for technological projects, which are developed through our 4 Business Units: IT People, Software Engineering, BPO and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,039 contacts → | ||||
Indirect evidence “Global business doesn’t have to be complicated.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,018 contacts → | ||||
Strong evidence “CCB Technology provides award-winning IT support and project services to customers nationwide.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,012 contacts → | ||||
Strong evidence “Aloha Technology is a global IT services outsourcing firm delivering digital transformation by developing technology to create revenue growth and improve agility by reinventing…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,007 contacts → | ||||
Partial evidence “Specialized services in order to provide to other companies outsourcing for activities, improving its performance and cost.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 953 contacts → | ||||
Strong evidence “Digicon Technologies PLC is a leading outsourcing organization in Bangladesh, with an industry leading edge in the vertical of BPO and IT/ITES solutions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 887 contacts → | ||||
Indirect evidence “At Atidiv, we help DTC brands and media agencies scale without the overhead of building large in-house teams.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 871 contacts → | ||||
Strong evidence “IND specializes in fixed-cost IT support and consulting services for small and medium-sized businesses in New Jersey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 865 contacts → | ||||
Indirect evidence “Statistics first” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 860 contacts → | ||||
Partial evidence “Horatio is a premier, tech-enabled outsourcing partner helping ambitious companies scale customer experience and complex business operations without compromising quality…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: IT support outsourcing 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 IT support outsourcing companies.
- Partial evidence
- Its own public description names part of IT support outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT support outsourcing 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 29,910 IT support outsourcing companies worldwide
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IT support outsourcing companies worldwide at a glance
As of Sep 21, 2026Companies by employee count
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 IT support outsourcing 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 IT support outsourcing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “IT support outsourcing 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 IT support outsourcing 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 IT support outsourcing 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, 77,418 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.
IT support outsourcing companies by location
130 lists · largest firstEvery IT support outsourcing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- IT support outsourcing companies based in the United States8,228
- IT support outsourcing companies based in India2,555
- IT support outsourcing companies based in the United Kingdom2,420
- IT support outsourcing companies based in Brazil1,355
- IT support outsourcing companies based in Canada1,118
- IT support outsourcing companies based in Australia1,029
- IT support outsourcing companies based in Germany717
- IT support outsourcing companies based in France625
- IT support outsourcing companies based in South Africa479
- IT support outsourcing companies based in Pakistan457
- IT support outsourcing companies based in Italy436
- IT support outsourcing companies based in Spain414
- IT support outsourcing companies based in Poland355
- IT support outsourcing companies based in the Philippines279
- IT support outsourcing companies based in the United Arab Emirates278
- IT support outsourcing companies based in the Netherlands222
- IT support outsourcing companies based in Belgium182
- IT support outsourcing companies based in Bangladesh178
- IT support outsourcing companies based in Argentina174
- IT support outsourcing companies based in Mexico157
- IT support outsourcing companies based in Switzerland150
- IT support outsourcing companies based in Romania139
- IT support outsourcing companies based in Nigeria130
- IT support outsourcing companies based in Chile127
- IT support outsourcing companies based in Colombia125
- IT support outsourcing companies based in New Zealand122
- IT support outsourcing companies based in Sweden121
- IT support outsourcing companies based in Denmark120
- IT support outsourcing companies based in Türkiye119
- IT support outsourcing companies based in Malaysia116
- IT support outsourcing companies based in Ireland107
- IT support outsourcing companies based in Indonesia106
- IT support outsourcing companies based in Portugal106
- IT support outsourcing companies based in Egypt103
- IT support outsourcing companies based in Austria99
- IT support outsourcing companies based in Israel85
- IT support outsourcing companies based in Ukraine83
- IT support outsourcing companies based in Japan81
- IT support outsourcing companies based in Kenya73
- IT support outsourcing companies based in Vietnam71
- IT support outsourcing companies based in Peru70
- IT support outsourcing companies based in Saudi Arabia70
- IT support outsourcing companies based in Russia63
- IT support outsourcing companies based in Hungary61
- IT support outsourcing companies based in Nepal60
- IT support outsourcing companies based in Greece59
- IT support outsourcing companies based in Bulgaria56
- IT support outsourcing companies based in Finland40
- IT support outsourcing companies based in Norway39
- IT support outsourcing companies based in Hong Kong37
- IT support outsourcing companies based in Slovakia36
- IT support outsourcing companies based in Serbia32
Cities
- IT support outsourcing companies based in London, United Kingdom551
- IT support outsourcing companies based in Sao Paulo, Brazil290
- IT support outsourcing companies based in New York, United States249
- IT support outsourcing companies based in Lahore, Pakistan174
- IT support outsourcing companies based in Toronto, Canada170
- IT support outsourcing companies based in Hyderabad, India167
- IT support outsourcing companies based in Bangalore, India165
- IT support outsourcing companies based in Pune, India146
- IT support outsourcing companies based in New Delhi, India140
- IT support outsourcing companies based in Houston, United States137
- IT support outsourcing companies based in Noida, India134
- IT support outsourcing companies based in Ahmedabad, India131
- IT support outsourcing companies based in Chennai, India126
- IT support outsourcing companies based in Karachi, Pakistan113
- IT support outsourcing companies based in Sydney, Australia113
- IT support outsourcing companies based in Johannesburg, South Africa106
- IT support outsourcing companies based in Melbourne, Australia106
- IT support outsourcing companies based in Miami, United States101
- IT support outsourcing companies based in Calgary, Canada99
- IT support outsourcing companies based in Chicago, United States90
- IT support outsourcing companies based in Mumbai, India89
- IT support outsourcing companies based in Dallas, United States87
- IT support outsourcing companies based in Austin, United States83
- IT support outsourcing companies based in Bengaluru, India83
- IT support outsourcing companies based in Rio De Janeiro, Brazil83
- IT support outsourcing companies based in San Diego, United States77
- IT support outsourcing companies based in Los Angeles, United States75
- IT support outsourcing companies based in Kolkata, India74
- IT support outsourcing companies based in Atlanta, United States73
- IT support outsourcing companies based in Tampa, United States69
- IT support outsourcing companies based in Delhi, India67
- IT support outsourcing companies based in Cape Town, South Africa66
- IT support outsourcing companies based in Phoenix, United States61
- IT support outsourcing companies based in Belo Horizonte, Brazil59
- IT support outsourcing companies based in Montreal, Canada58
- IT support outsourcing companies based in Las Vegas, United States57
- IT support outsourcing companies based in Charlotte, United States52
- IT support outsourcing companies based in Denver, United States51
- IT support outsourcing companies based in Mississauga, Canada51
- IT support outsourcing companies based in Jaipur, India50
- IT support outsourcing companies based in Orlando, United States50
- IT support outsourcing companies based in Irvine, United States49
- IT support outsourcing companies based in Seattle, United States49
- IT support outsourcing companies based in Edmonton, Canada47
- IT support outsourcing companies based in San Francisco, United States46
- IT support outsourcing companies based in San Antonio, United States42
- IT support outsourcing companies based in Vancouver, Canada42
- IT support outsourcing companies based in Gurugram, India41
- IT support outsourcing companies based in Portland, United States40
- IT support outsourcing companies based in Brisbane, Australia39
- IT support outsourcing companies based in Curitiba, Brazil39
- IT support outsourcing companies based in Perth, Australia39
- IT support outsourcing companies based in Porto Alegre, Brazil39
- IT support outsourcing companies based in Surat, India38
- IT support outsourcing companies based in Jacksonville, United States37
- IT support outsourcing companies based in Manchester, United Kingdom37
- IT support outsourcing companies based in Wilmington, United States35
- IT support outsourcing companies based in Arlington, United States33
- IT support outsourcing companies based in Ottawa, Canada33
- IT support outsourcing companies based in San Jose, United States31
- IT support outsourcing companies based in Birmingham, United Kingdom30
- IT support outsourcing companies based in Bristol, United Kingdom30
- IT support outsourcing companies based in Columbus, United States30
- IT support outsourcing companies based in Frisco, United States29
- IT support outsourcing companies based in Indianapolis, United States29
- IT support outsourcing companies based in Sacramento, United States29
- IT support outsourcing companies based in Fort Lauderdale, United States28
- IT support outsourcing companies based in Louisville, United States28
- IT support outsourcing companies based in Cincinnati, United States27
- IT support outsourcing companies based in Irving, United States27
- IT support outsourcing companies based in Pittsburgh, United States27
- IT support outsourcing companies based in Boston, United States26
- IT support outsourcing companies based in Greenville, United States26
- IT support outsourcing companies based in Nashville, United States26
- IT support outsourcing companies based in Pretoria, South Africa26
- IT support outsourcing companies based in Richmond, United States26
- IT support outsourcing companies based in Troy, United States25
- IT support outsourcing companies based in Washington, United States25
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 IT support outsourcing 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 IT support outsourcing companies are there worldwide?
RevenueBase identified 29,910 IT support outsourcing 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?
Arcgate, headquartered in Udaipur, tops this list with the largest team on record.
Which country has the most IT support outsourcing companies?
The United States leads with 8,228 companies, followed by India (2,555) and the United Kingdom (2,420). Every IT support outsourcing companies list by country and city is linked on this page.
Which city has the most IT support outsourcing companies?
London leads with 570 headquartered companies, followed by Sao Paulo (290) and New York (249).
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 77,418 verified decision-maker contacts tracked across these 29,910 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.