Company lists · Data refreshed November 2026

Top 25 Legacy system migration companies worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 6,501 companies tracked

RevenueBase identified 6,501 company matches for legacy system migration companies worldwide as of November 2026 and tracks 218,617 professional contacts across them, including 68,301 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for legacy system migration companies 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 migration companies 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

6,501Companies

218,617Contacts tracked

68,301Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest legacy system migration companies worldwide

Ranked by team size

Top 25 of 6,501 company matches for legacy system migration companies 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	SHI International Corp	Exact match	Somerset, United StatesHQ recorded Nov 6, 2026	5,001-10,000	7,151 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	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
4	Ensono	Exact match	Downers Grove, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,542 contacts →
	Exact match “Ensono is an expert technology adviser and managed service provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	AHEAD	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	3,490 contacts →
	Exact match “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,901 contacts →
	Exact match “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Infotel	Exact match	Neuilly-sur-seine, FranceHQ recorded Nov 6, 2026	1,001-5,000	1,842 contacts →
	Exact match “Infotel accompagne les directions Informatiques et Métiers des grandes entreprises depuis 45 ans (Airbus, Air France, PSA, BNP Paribas, Banque de France ou encore BPCE, etc.).” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Improving	Exact match	Plano, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,673 contacts →
	Exact match “Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Searce INC	Exact match	Houston, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,608 contacts →
	Exact match “Searce is an AI-native, engineering-led modern tech consultancy that empowers clients to futurify by delivering real business outcomes.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Kumaran Systems	Exact match	Chennai, CA, IndiaHQ recorded Nov 6, 2026	1,001-5,000	1,388 contacts →
	Exact match “Kumaran Systems: Engineering Future-Ready Transformations Since 1992, Kumaran Systems has been helping enterprises bridge the past and the future, reimagining legacy systems and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Royal Cyber INC	Exact match	Naperville, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,373 contacts →
	Exact match “Royal Cyber is a trusted global IT consulting & digital transformation partner, empowering enterprises for over two decades to evolve with agility, security, and innovation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	LEVIO	Exact match	Québec, PE, CanadaHQ recorded Nov 6, 2026	1,001-5,000	1,371 contacts →
	Exact match “Levio is a leading North American technology‑focused consulting firm and one of the two largest system integrators fully owned by Canadian interests, specializing in digital…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	SNP Group	Exact match	Heidelberg, GermanyHQ recorded Nov 6, 2026	1,001-5,000	1,349 contacts →
	Exact match “SNP is the global technology platform leader and trusted partner for companies seeking unparalleled data-enabled transformation capabilities and business agility.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Chain-Sys Corporation	Exact match	Rocklin, United StatesHQ recorded Nov 6, 2026	501-1,000	1,343 contacts →
	Exact match “ChainSys is an innovator in the data management and business platform implementation (ERP) space.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Emergys	Exact match	Morrisville, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,083 contacts →
	Exact match “Accelerate Digital Transformation At Emergys, we empower businesses to align their IT strategies with long-term objectives-driving innovation, efficiency, and growth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	NUMEN	Exact match	Sao Paulo, BrazilHQ recorded Nov 6, 2026	501-1,000	951 contacts →
	Exact match “Numen is an international consultancy specialized in enterprise technologies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Xtglobal, INC	Exact match	Plano, United StatesHQ recorded Nov 6, 2026	501-1,000	886 contacts →
	Exact match “Founded in 1998, XTGlobal, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Infojini INC	Exact match	Columbia, NJ, United StatesHQ recorded Nov 6, 2026	501-1,000	877 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Integra Micro Software Services	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	201-500	792 contacts →
	Exact match “Integra Micro Software Services (IMSS) is a reliable provider of software services for over 19 years, and is a subsidiary of 37 year old Integra Group.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	NET At Work	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	201-500	763 contacts →
	Exact match “At Net at Work, we help organizations unleash the power of their business performance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	System Soft Technologies	Exact match	Tampa, VA, United StatesHQ recorded Nov 6, 2026	501-1,000	755 contacts →
	Exact match “System Soft Group is an IT services and solutions company that helps organizations overcome limited managed IT capabilities and achieve key technology goals.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Direction Software LLP	Exact match	Mumbai, IndiaHQ recorded Nov 6, 2026	201-500	723 contacts →
	Exact match “Working together with businesses to move through the digital revolution be it in the ERP/CRM, bespoke development, legacy maintenance and migration as well as consulting and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Node4	Exact match	Derby, United KingdomHQ recorded Nov 6, 2026	1,001-5,000	714 contacts →
	Exact match “Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Heartland Business Systems	Exact match	Little Chute, KS, United StatesHQ recorded Nov 6, 2026	501-1,000	713 contacts →
	Exact match “HBS is your full-service technology solutions partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	The Select Group	Exact match	Raleigh, NC, United StatesHQ recorded Nov 6, 2026	1,001-5,000	706 contacts →
	Exact match “TSG is a technology consulting and services partner that helps organizations move faster, operate smarter, and extract greater value from technology investments in rapidly…” 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 migration companies”. 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 6,501 legacy system migration companies worldwide

See the full list, filter by size, metro and specialty, and access 68,301 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Legacy system migration companies worldwide at a glance

As of Nov 6, 2026

31.2%Verified-email coverage

33.6Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

3,343

11-50

2,129

51-200

728

201-500

159

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 migration companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “legacy system migration companies” 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 68,301 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 migration companies by location

52 lists · largest first

Every Legacy system migration companies 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 migration companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system migration companies are there worldwide?

RevenueBase identified 6,501 company matches for legacy system migration companies 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 migration companies?

The United States leads with 1,449 companies, followed by India (835) and the United Kingdom (321). Every legacy system migration companies list by country and city is linked on this page.

Which city has the most legacy system migration companies?

London leads with 106 company records, followed by Bangalore (97) and Hyderabad (95).

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 68,301 professional contacts with verified work emails tracked across these 6,501 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.

Ready to reach these companies? Verified emails and direct dials for all 6,501 legacy system migration companies worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.