Company lists · Data refreshed November 2026

Top 25 Legacy system integration services worldwide

Name: Legacy system integration services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 3,581 companies tracked

RevenueBase identified 3,581 company matches for legacy system integration services worldwide as of November 2026 and tracks 162,590 professional contacts across them, including 46,441 with verified work emails. The United States is the largest market and Hyderabad the largest hub.

This list covers company matches for legacy system integration services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for legacy system integration services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built

3,581Companies

162,590Contacts tracked

46,441Verified emails

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The 25 largest legacy system integration services worldwide

Ranked by team size

Top 25 of 3,581 company matches for legacy system integration services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Nov 6, 2026	10001+	86,844 contacts →
	Exact match “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	Software AG	Exact match	Darmstadt, GermanyHQ recorded Nov 6, 2026	n/a	4,213 contacts →
	Exact match “Software AG has been helping enterprises run and evolve their core business applications for over 50 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	BOOMI	Exact match	Conshohocken, PA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,725 contacts →
	Exact match “Connect everything to achieve anything™ #TeamBoomi” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Consort Group	Exact match	Paris, FranceHQ recorded Nov 6, 2026	1,001-5,000	1,758 contacts →
	Exact match “Acteur de référence des systèmes d’information augmentés par l’intégration stratégique de la data, Consort Group accompagne les entreprises pour leur permettre de valoriser ce…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Hkbn JOS	Exact match	Kowloon Bay, Hong KongHQ recorded Nov 6, 2026	1,001-5,000	965 contacts →
	Exact match “With over 60 years of experience in Asia, HKBN JOS is a systems integrator, solutions provider and technology consultancy with deep industry knowledge and an exceptional ability…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Value Point Systems PVT LTD	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	1,001-5,000	720 contacts →
	Exact match “Value Point Systems, one of the leading Digital Systems & Services Integrator company in South Asia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Ctc- Global SDN BHD	Exact match	Petaling Jaya, MalaysiaHQ recorded Nov 6, 2026	501-1,000	673 contacts →
	Exact match “CTC Global Sdn Bhd (CTC Malaysia) is a wholly owned subsidiary of ITOCHU Techno-Solutions Corporation (CTC) and ITOCHU Corporation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Logicalis Spain	Exact match	Barcelona, SpainHQ recorded Nov 6, 2026	501-1,000	598 contacts →
	Exact match “Logicalis es una compañía de referencia tanto en España como en los países en los que opera.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Exsitec	Exact match	SwedenHQ recorded Nov 6, 2026	501-1,000	581 contacts →
	Exact match “Exsitec are experts in digital solutions that make a difference in the customer's business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Enterprise Solutions INC	Exact match	Warrenville, ON, United StatesHQ recorded Nov 6, 2026	501-1,000	551 contacts →
	Exact match “Enterprise Solutions, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Yael Group	Exact match	Kfar Sava, IsraelHQ recorded Nov 6, 2026	1,001-5,000	496 contacts →
	Exact match “Yael Group is a leading Israeli IT company that provides best-of-breed technology solutions for today’s business challenges.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Technology Integration Group	Exact match	San Diego, GA, United StatesHQ recorded Nov 6, 2026	201-500	480 contacts →
	Exact match “Our Mission: TIG will earn its place as a trusted partner to our clients, providing only the highest level of service, value and advanced technology to power their strategic…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Eidiko Systems Integrators Private Limited	Exact match	Hyderabad, IndiaHQ recorded Nov 6, 2026	201-500	480 contacts →
	Exact match “Eidiko Systems Integrators Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Tmaxsoft	Exact match	Gyeonggi-do, South KoreaHQ recorded Nov 6, 2026	501-1,000	456 contacts →
	Exact match “TmaxSoft is a global software innovator focused on infrastructure and data modernization, with solutions that offer enterprise CIOs viable alternatives to support their global IT…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Object Computing, INC	Exact match	St. Louis, MO, United StatesHQ recorded Nov 6, 2026	201-500	448 contacts →
	Exact match “We engineer the systems that power your business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Softweb Solutions Inc.	Exact match	Plano, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	432 contacts →
	Exact match “When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Fourth Dimension Technologies	Exact match	Chennai, CA, IndiaHQ recorded Nov 6, 2026	501-1,000	416 contacts →
	Exact match “About Us 36+ Years of IT Infrastructure & Managed Services Expertise At Fourth Dimension Technologies (4DTech), we help organizations modernize, secure, and manage their IT…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	BTC Bilişim Hizmetleri	Exact match	İçerenköy, TürkiyeHQ recorded Nov 6, 2026	201-500	404 contacts →
	Exact match “1995’te Eresoft adıyla kurulan ve 1997’de SAP’nin Türkiye’deki ilk yerel iş ortağı olan şirketimiz, 2005 yılında 10 farklı ülkede faaliyet gösteren BTC Group bünyesine katılarak…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Reti S.P.A	Exact match	Busto Arsizio, ItalyHQ recorded Nov 6, 2026	201-500	394 contacts →
	Exact match “Founded in 1994 by Bruno Paneghini, Reti is one of the main Italian player in the IT Consulting sector, specialized in System Integration Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	PT Mitra Solusi Telematika	Exact match	Jakarta, IndonesiaHQ recorded Nov 6, 2026	51-200	376 contacts →
	Exact match “With over 25 years experience in Information Technology Business, MST can deliver best IT solution that may align your IT with your business through our experiences and expertise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Groundswell	Exact match	Mclean, VA, United StatesHQ recorded Nov 6, 2026	201-500	372 contacts →
	Exact match “Groundswell is a specialized, highly agile systems integrator delivering advanced technology solutions as a trusted mission partner to federal agencies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Insight Business Machines Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	365 contacts →
	Exact match “About us Insight Business Machines Pvt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Prutech Solutions, INC	Exact match	Iselin, United StatesHQ recorded Nov 6, 2026	501-1,000	354 contacts →
	Exact match “PruTech Solutions Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Excelia	Exact match	Pozuelo De Alarcón, SpainHQ recorded Nov 6, 2026	201-500	351 contacts →
	Exact match “We are a global consulting, technology, and professional services firm with over 25 years of experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Bailiwick, An Eplus Technology, Inc. Company	Exact match	Chaska, MN, United StatesHQ recorded Nov 6, 2026	201-500	345 contacts →
	Exact match “As a partner to some of the world’s largest companies, Bailiwick provides professionally managed technology integration and IT expertise for complex, large-scale IT initiatives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “legacy system integration services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 3,581 legacy system integration services worldwide

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Legacy system integration services worldwide at a glance

As of Nov 6, 2026

28.6%Verified-email coverage

45.4Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Hyderabad

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

1,430

11-50

1,371

51-200

539

201-500

131

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for legacy system integration services are linked below.
What qualifies: Company records worldwide whose business descriptions match “legacy system integration services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 46,441 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Legacy system integration services by location

31 lists · largest first

Every Legacy system integration 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “legacy system integration services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system integration services are there worldwide?

RevenueBase identified 3,581 company matches for legacy system integration services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

DXC Technology tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most legacy system integration services?

The United States leads with 726 companies, followed by India (383) and Brazil (117). Every legacy system integration services list by country and city is linked on this page.

Which city has the most legacy system integration services?

Hyderabad leads with 53 company records, followed by Bangalore (43) and Sao Paulo (43).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 46,441 professional contacts with verified work emails tracked across these 3,581 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 SmartSearch, 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.