Company lists · Data refreshed September 2026

Top 25 Legacy system modernization consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 28,467 companies tracked

RevenueBase identified 28,467 company matches for legacy system modernization consultants worldwide as of September 2026 and tracks 487,746 professional contacts across them, including 126,502 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for legacy system modernization 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 September 20, 2026. Country and city lists for legacy system modernization 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 Sep 20, 2026 How this list was built

28,467Companies

487,746Contacts tracked

126,502Verified emails

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The 25 largest legacy system modernization consultants worldwide

Ranked by team size

Top 25 of 28,467 company matches for legacy system modernization consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 Sep 20, 2026	10001+	82,768 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 · Sep 20, 2026 · View company records in RevenueBase
2	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 20, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Sonata Software	Exact match	Bangalore, IndiaHQ recorded Sep 20, 2026	5,001-10,000	7,508 contacts →
	Exact match “Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	SHI International Corp	Exact match	Somerset, NJ, United StatesHQ recorded Sep 20, 2026	5,001-10,000	6,734 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Software AG	Exact match	Darmstadt, GermanyHQ recorded Sep 20, 2026	n/a	4,127 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 · Sep 20, 2026 · View company records in RevenueBase
6	Ensono	Exact match	Downers Grove, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	3,247 contacts →
	Exact match “Ensono is an expert technology adviser and managed service provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	AHEAD	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,989 contacts →
	Exact match “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,619 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 · Sep 20, 2026 · View company records in RevenueBase
9	Mitra Integrasi Informatika, PT	Exact match	Jakarta, IndonesiaHQ recorded Sep 20, 2026	1,001-5,000	2,517 contacts →
	Exact match “Mitra Integrasi Informatika (“MII”), established in 1996 as a subsidiary of the publicly listed PT Metrodata Electronics, Tbk.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	IT Group, INC	Exact match	Quezon City, PhilippinesHQ recorded Sep 20, 2026	n/a	2,238 contacts →
	Exact match “IT Group, Inc.(also known as ITG), is an Information Technology solutions partner that endeavors to provide growing organizations with solutions that meet the unique needs of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	GFI World	Exact match	Saint-ouen, FranceHQ recorded Sep 20, 2026	10001+	2,169 contacts →
	Exact match “Gfi became Inetum in 2020.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Jade Global	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,872 contacts →
	Exact match “Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Fincons Group	Exact match	Vimercate, ItalyHQ recorded Sep 20, 2026	1,001-5,000	1,870 contacts →
	Exact match “With more than 40 years of experience in IT Business Consulting and System Integration, Fincons Group partners with clients to support business growth through innovation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Infotel	Exact match	Neuilly-sur-seine, FranceHQ recorded Sep 20, 2026	1,001-5,000	1,735 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 · Sep 20, 2026 · View company records in RevenueBase
15	Quadrant Technologies	Exact match	Redmond, WA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,664 contacts →
	Exact match “Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Future Focus Infotech Private Limited	Exact match	Sharjah, JapanHQ recorded Sep 20, 2026	1,001-5,000	1,608 contacts →
	Exact match “Enabling Your Digital Future Future Focus Infotech (FFI) is your strategic partner for transformative digital solutions and IT consulting.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Improving	Exact match	Plano, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,578 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 · Sep 20, 2026 · View company records in RevenueBase
18	Searce INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,511 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 · Sep 20, 2026 · View company records in RevenueBase
19	LEVIO	Exact match	Québec, QC, CanadaHQ recorded Sep 20, 2026	1,001-5,000	1,403 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 · Sep 20, 2026 · View company records in RevenueBase
20	Prodware	Exact match	Paris, FranceHQ recorded Sep 20, 2026	1,001-5,000	1,394 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 · Sep 20, 2026 · View company records in RevenueBase
21	CEI	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 20, 2026	501-1,000	1,391 contacts →
	Exact match “In today’s technology-driven world, the mandate of transformation represents both challenges and opportunities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Royal Cyber INC	Exact match	Naperville, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,325 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 · Sep 20, 2026 · View company records in RevenueBase
23	Trigyn Technologies	Exact match	Mumbai, IndiaHQ recorded Sep 20, 2026	1,001-5,000	1,230 contacts →
	Exact match “We're re-engineering the way business is done.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	V-Soft Consulting Group, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,221 contacts →
	Exact match “V-Soft Consulting, an innovative corporation specializing in Information Technology consulting; including staffing, digital, and infrastructure solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Kumaran Systems	Exact match	Chennai, IndiaHQ recorded Sep 20, 2026	1,001-5,000	1,219 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 · Sep 20, 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 modernization 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 28,467 legacy system modernization consultants worldwide

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Legacy system modernization consultants worldwide at a glance

As of Sep 20, 2026

25.9%Verified-email coverage

17.1Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

15,604

11-50

8,921

51-200

2,904

201-500

616

501-1,000

188

1,001-5,000

114

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 modernization consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “legacy system modernization 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 126,502 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 September 20, 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 modernization consultants by location

130 lists · largest first

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

How many legacy system modernization consultants are there worldwide?

RevenueBase identified 28,467 company matches for legacy system modernization consultants worldwide as of September 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 modernization consultants?

The United States leads with 6,336 companies, followed by India (3,158) and Brazil (1,093). Every legacy system modernization consultants list by country and city is linked on this page.

Which city has the most legacy system modernization consultants?

London leads with 377 company records, followed by Hyderabad (338) and Sao Paulo (310).

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 126,502 professional contacts with verified work emails tracked across these 28,467 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 September 20, 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.