Company lists · Data refreshed November 2026

Top 25 Mainframe modernization consultants worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,499 companies tracked

RevenueBase identified 5,499 company matches for mainframe modernization consultants worldwide as of November 2026 and tracks 154,953 professional contacts across them, including 37,284 with verified work emails. The United States is the largest market and Hyderabad the largest hub.

This list covers company matches for mainframe 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 November 6, 2026. Country and city lists for mainframe 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 Nov 6, 2026 How this list was built

5,499Companies

154,953Contacts tracked

37,284Verified emails

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The 25 largest mainframe modernization consultants worldwide

Ranked by team size

Top 25 of 5,499 company matches for mainframe modernization 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	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
2	Sonata Software	Exact match	Bangalore, IndiaHQ recorded Nov 6, 2026	5,001-10,000	7,815 contacts →
	Exact match “Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.” 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	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
7	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
8	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
9	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
10	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
11	galaxe.solutions	Exact match	Detroit, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,095 contacts →
	Exact match “GalaxE, now Endava, is a leading global professional services company that specializes in platform-driven solutions and the use of automation to achieve core modernisation and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	programmers.io	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,063 contacts →
	Exact match “IBM i is evolving.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Kyndryl Japan	Exact match	United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,021 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	IBA Group	Exact match	Prague, CA, Czech RepublicHQ recorded Nov 6, 2026	1,001-5,000	1,000 contacts →
	Exact match “IBA Group is one of the largest IT service providers in Eastern Europe, performing software development, migration, maintenance, support, and IT consulting services with IT and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	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
16	Tanisha Systems, INC	Exact match	Boston, NY, United StatesHQ recorded Nov 6, 2026	1,001-5,000	889 contacts →
	Exact match “Tanisha Systems, founded in 2002 in Massachusetts-USA, is a leading provider of Custom Application Development and end-to-end IT Services to clients globally.” 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	Senacor Technologies	Exact match	Eschborn, GermanyHQ recorded Nov 6, 2026	1,001-5,000	828 contacts →
	Exact match “Senacor is part of the 25 leading IT-Consulting companies and among the Top 5 of the medium-sized IT-Service providers in Germany and runs 10 offices in Austria, Switzerland…” 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	Mobilecomm Professionals, INC	Exact match	Richardson, United StatesHQ recorded Nov 6, 2026	501-1,000	724 contacts →
	Exact match “MobileComm is now fully integrated with UST.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	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
23	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
24	Intergrupo	Exact match	Sabaneta, ColombiaHQ recorded Nov 6, 2026	1,001-5,000	704 contacts →
	Exact match “Established in 1995, InterGrupo is one of Latin America's leading IT Consulting Services Provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	CAT Technologies LTD	Exact match	Hyd, IndiaHQ recorded Nov 6, 2026	201-500	691 contacts →
	Exact match “CAT Technology Inc, established in October is engaged in providing quality consulting services in Systems Analysis, System Design, Database Administration, Systems Engineering…” 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 “mainframe 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 5,499 mainframe modernization consultants worldwide

See the full list, filter by size, metro and specialty, and access 37,284 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Mainframe modernization consultants worldwide at a glance

As of Nov 6, 2026

24.1%Verified-email coverage

28.2Average contacts per company

1-10Median size (employees)

1.4%Largest-city concentration · Hyderabad

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,981

11-50

1,662

51-200

607

201-500

126

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 mainframe modernization consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “mainframe 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 37,284 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.

Mainframe modernization consultants by location

35 lists · largest first

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

How many mainframe modernization consultants are there worldwide?

RevenueBase identified 5,499 company matches for mainframe modernization 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?

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

Which country has the most mainframe modernization consultants?

The United States leads with 1,457 companies, followed by India (560) and Germany (237). Every mainframe modernization consultants list by country and city is linked on this page.

Which city has the most mainframe modernization consultants?

Hyderabad leads with 79 company records, followed by Bangalore (76) and London (70).

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 37,284 professional contacts with verified work emails tracked across these 5,499 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.