Company lists · Data refreshed November 2026

Top 25 Legacy system migration consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 15,708 companies tracked

RevenueBase identified 15,708 company matches for legacy system migration consultants worldwide as of November 2026 and tracks 394,456 professional contacts across them, including 106,330 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 consultants 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 consultants 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

15,708Companies

394,456Contacts tracked

106,330Verified emails

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The 25 largest legacy system migration consultants worldwide

Ranked by team size

Top 25 of 15,708 company matches for legacy system migration consultants 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	Mphasis	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	10001+	46,102 contacts →
	Exact match “A leading applied technology services company, we innovate to deliver service excellence and successful outcomes across sales, delivery and development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Wavestone	Exact match	100-101 Terrasse Boieldieu, FranceHQ recorded Nov 6, 2026	1,001-5,000	6,512 contacts →
	Exact match “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	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
5	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
6	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
7	Speridian Technologies	Exact match	Albuquerque, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,668 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Jade Global	Exact match	San Jose, UT, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,978 contacts →
	Exact match “Jade Global is a leading AI native digital transformation company enabling enterprises become AI ready by optimizing operations and accelerating business outcomes through…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	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
10	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
11	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
12	Abacus	Exact match	Lahore, PakistanHQ recorded Nov 6, 2026	1,001-5,000	1,589 contacts →
	Exact match “For almost 35 years, Abacus has been offering cutting-edge business solutions helping organisations to transform their visions into realities through a combination of latest…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Prodware	Exact match	Paris, FranceHQ recorded Nov 6, 2026	1,001-5,000	1,442 contacts →
	Exact match “At Prodware, we believe that Trust, Audacity, and Passion are the driving forces behind meaningful digital transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Trace3	Exact match	Irvine, MI, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,431 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	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
16	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
17	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
18	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
19	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
20	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
21	CEI	Exact match	Pittsburgh, PA, United StatesHQ recorded Nov 6, 2026	501-1,000	1,042 contacts →
	Exact match “In today’s technology-driven world, the mandate of transformation represents both challenges and opportunities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	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
23	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
24	People Prime Worldwide	Exact match	Hyderabad, IndiaHQ recorded Nov 6, 2026	501-1,000	837 contacts →
	Exact match “At People Prime Worldwide, we help organizations transform and scale through AIML Technology Services, AIML Solutions, IT Consulting, Staff Augmentation, and Managed Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Foray Software Private Limited	Exact match	Hyderabad, IndiaHQ recorded Nov 6, 2026	n/a	794 contacts →
	Exact match “Innorev Technologies Pvt Ltd is a leading IT consulting and services firm offering the right blend of technology and skill-set to organizations across industries.” 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 consultants”. 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 15,708 legacy system migration consultants worldwide

See the full list, filter by size, metro and specialty, and access 106,330 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy system migration consultants worldwide at a glance

As of Nov 6, 2026

27.0%Verified-email coverage

25.1Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

8,414

11-50

4,876

51-200

1,737

201-500

389

501-1,000

122

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 consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “legacy system migration consultants” 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 106,330 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 consultants by location

112 lists · largest first

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

How many legacy system migration consultants are there worldwide?

RevenueBase identified 15,708 company matches for legacy system migration consultants 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 consultants?

The United States leads with 3,934 companies, followed by India (1,681) and the United Kingdom (704). Every legacy system migration consultants list by country and city is linked on this page.

Which city has the most legacy system migration consultants?

London leads with 265 company records, followed by Hyderabad (215) and Paris (185).

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 106,330 professional contacts with verified work emails tracked across these 15,708 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.