Company lists · Data refreshed November 2026
Top 25 Mainframe modernization services worldwide
RevenueBase identified 646 company matches for mainframe modernization services worldwide as of November 2026 and tracks 32,617 professional contacts across them, including 9,060 with verified work emails. The United States is the largest market and Bangalore the largest hub.
This list covers company matches for mainframe modernization 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 mainframe modernization 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.
The 25 largest mainframe modernization services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | |||||
| 2 | 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 | 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 | |||||
| 4 | 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 | |||||
| 5 | 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 | |||||
| 6 | 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 | |||||
| 7 | 1,063 contacts → | ||||
Exact match “IBM i is evolving.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 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 | |||||
| 9 | 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 | |||||
| 10 | 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 | |||||
| 11 | 419 contacts → | ||||
Exact match “RSD is now a part of Rocket Software.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 365 contacts → | ||||
Exact match “Fresche Solutions is an AI-powered IT modernization company that manages and maximizes the value of your IBM i and Microsoft systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 285 contacts → | ||||
Exact match “Remiges is a software projects company focusing on app modernisation encompassing DB migration, devops, automation and UI/UX Our strength lies in providing robust, scalable…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 239 contacts → | ||||
Exact match “Maintec Technologies offers globally compliant IT solutions that empower businesses to become more competitive by leveraging both onsite and offshore capabilities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 208 contacts → | ||||
Exact match “Astadia is the industry leader for mainframe migrations and modernizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 173 contacts → | ||||
Exact match “Expeed Software is an engineering and technology partner helping businesses turn technology into a competitive advantage.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 159 contacts → | ||||
Exact match “Platform 3 Solutions is a global leader in end-to-end legacy application migration and retirement solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 125 contacts → | ||||
Exact match “MOST Software Technologies helps customers leverage their investment in mainframe applications.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 108 contacts → | ||||
Exact match “Callibrity is the software consultancy helping clients do more with technology.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 108 contacts → | ||||
Exact match “Founded in 2001, EvolveWare provides seamless application modernization journeys for enterprises, government organizations and global partners.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 96 contacts → | ||||
Exact match “AI-accelerated.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 92 contacts → | ||||
Exact match “The Canton Group is a business technology services firm empowering government agencies and enterprise organizations to modernize, automate, and secure mission-critical systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 90 contacts → | ||||
Exact match “AQL Technologies is a Microsoft Solutions Partner in Digital App & Innovation and Data & AI providing the highest level of IT expertise and customer satisfaction for the past 15…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 90 contacts → | ||||
Exact match “Since 1982, Treehouse Software has been helping mainframe customers with innovative tools, services, and training.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 85 contacts → | ||||
Exact match “DB Best is internationally known for comprehensive data-management services, database development and migration, as well as creation of highly successful web and mobile systems.” 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 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 646 mainframe modernization services worldwide
See the full list, filter by size, metro and specialty, and access 9,060 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Mainframe modernization services worldwide at a glance
As of Nov 6, 2026Companies by employee count
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 services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “mainframe modernization 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 9,060 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 services by location
5 lists · largest firstEvery Mainframe modernization services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many mainframe modernization services are there worldwide?
RevenueBase identified 646 company matches for mainframe modernization 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?
Sonata Software tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most mainframe modernization services?
The United States leads with 182 companies, followed by India (51) and Germany (35). Every mainframe modernization services list by country and city is linked on this page.
Which city has the most mainframe modernization services?
Bangalore leads with 10 company records, followed by Sao Paulo (9) and London (8).
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 9,060 professional contacts with verified work emails tracked across these 646 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 646 mainframe modernization services worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 mainframe modernization services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 646 matching company records for mainframe modernization services worldwide, with 32,617 tracked contacts and 9,060 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 mainframe modernization services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Sonata Softwaresonata-software.comHQ: Bangalore, IndiaReported employees: 5,001-10,000 | Bangalore, India | 5,001-10,000 | Exact match | 7,815 contacts → |
“Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Software AGsoftwareag.comHQ: Darmstadt, GermanyReported employees: Not recorded | Darmstadt, Germany | Not recorded | Exact match | 4,213 contacts → |
“Software AG has been helping enterprises run and evolve their core business applications for over 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ensonoensono.comHQ: Downers Grove, IL, United StatesReported employees: 1,001-5,000 | Downers Grove, IL, United States | 1,001-5,000 | Exact match | 3,542 contacts → |
“Ensono is an expert technology adviser and managed service provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Improvingimproving.comHQ: Plano, United StatesReported employees: 1,001-5,000 | Plano, United States | 1,001-5,000 | Exact match | 1,673 contacts → |
“Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Kumaran Systemskumaran.comHQ: Chennai, CA, IndiaReported employees: 1,001-5,000 | Chennai, CA, India | 1,001-5,000 | Exact match | 1,388 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Royal Cyber INCroyalcyber.comHQ: Naperville, United StatesReported employees: 1,001-5,000 | Naperville, United States | 1,001-5,000 | Exact match | 1,373 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  programmers.ioprogrammers.ioHQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 1,063 contacts → |
“IBM i is evolving.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Node4node4.co.ukHQ: Derby, United KingdomReported employees: 1,001-5,000 | Derby, United Kingdom | 1,001-5,000 | Exact match | 714 contacts → |
“Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Tmaxsofttmaxsoft.comHQ: Gyeonggi-do, South KoreaReported employees: 501-1,000 | Gyeonggi-do, South Korea | 501-1,000 | Exact match | 456 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Softweb Solutions Inc.softwebsolutions.comHQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 432 contacts → |
“When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  RSDrocketsoftware.comHQ: Waltham, MA, United StatesReported employees: 1,001-5,000 | Waltham, MA, United States | 1,001-5,000 | Exact match | 419 contacts → |
“RSD is now a part of Rocket Software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Fresche Solutionsfreschesolutions.comHQ: Montréal, QC, CanadaReported employees: 201-500 | Montréal, QC, Canada | 201-500 | Exact match | 365 contacts → |
“Fresche Solutions is an AI-powered IT modernization company that manages and maximizes the value of your IBM i and Microsoft systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Remiges Technologies PVT LTDremiges.techHQ: Navi Mumbai, IndiaReported employees: 201-500 | Navi Mumbai, India | 201-500 | Exact match | 285 contacts → |
“Remiges is a software projects company focusing on app modernisation encompassing DB migration, devops, automation and UI/UX Our strength lies in providing robust, scalable…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Maintec Technologies - USAmaintec.comHQ: Raleigh, United StatesReported employees: 501-1,000 | Raleigh, United States | 501-1,000 | Exact match | 239 contacts → |
“Maintec Technologies offers globally compliant IT solutions that empower businesses to become more competitive by leveraging both onsite and offshore capabilities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Astadiaastadia.comHQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Expeed Softwareexpeed.comHQ: Columbus, United StatesReported employees: 51-200 | Columbus, United States | 51-200 | Exact match | 173 contacts → |
“Expeed Software is an engineering and technology partner helping businesses turn technology into a competitive advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Platform 3 Solutionsplatform3solutions.comHQ: Minnetonka, United StatesReported employees: 201-500 | Minnetonka, United States | 201-500 | Exact match | 159 contacts → |
“Platform 3 Solutions is a global leader in end-to-end legacy application migration and retirement solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Most Technologiesmosttechnologies.comHQ: Atlanta, GA, IsraelReported employees: 51-200 | Atlanta, GA, Israel | 51-200 | Exact match | 125 contacts → |
“MOST Software Technologies helps customers leverage their investment in mainframe applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Callibritycallibrity.comHQ: Cincinnati, OH, United StatesReported employees: 51-200 | Cincinnati, OH, United States | 51-200 | Exact match | 108 contacts → |
“Callibrity is the software consultancy helping clients do more with technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Evolveware, INCevolveware.comHQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 108 contacts → |
“Founded in 2001, EvolveWare provides seamless application modernization journeys for enterprises, government organizations and global partners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Devox Softwaredevoxsoftware.comHQ: Miami, United StatesReported employees: 51-200 | Miami, United States | 51-200 | Exact match | 96 contacts → |
“AI-accelerated.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  The Canton Groupcantongroup.comHQ: Baltimore, MD, United StatesReported employees: 51-200 | Baltimore, MD, United States | 51-200 | Exact match | 92 contacts → |
“The Canton Group is a business technology services firm empowering government agencies and enterprise organizations to modernize, automate, and secure mission-critical systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  AQL Technologiesaqltech.comHQ: Park Ridge, IL, United StatesReported employees: 51-200 | Park Ridge, IL, United States | 51-200 | Exact match | 90 contacts → |
“AQL Technologies is a Microsoft Solutions Partner in Digital App & Innovation and Data & AI providing the highest level of IT expertise and customer satisfaction for the past 15…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Treehouse Softwaretreehouse.comHQ: Sewickley, PA, United StatesReported employees: 11-50 | Sewickley, PA, United States | 11-50 | Exact match | 90 contacts → |
“Since 1982, Treehouse Software has been helping mainframe customers with innovative tools, services, and training.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  DB Best Technologiesdbbest.comHQ: Redmond, WA, United StatesReported employees: 201-500 | Redmond, WA, United States | 201-500 | Exact match | 85 contacts → |
“DB Best is internationally known for comprehensive data-management services, database development and migration, as well as creation of highly successful web and mobile systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 646 company matches
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Mainframe modernization services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
643 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 646 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Mainframe modernization services by location
5 lists · largest firstEvery Mainframe modernization services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for mainframe modernization services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many mainframe modernization services did RevenueBase find worldwide?
The saved snapshot records 646 matching company records, 32,617 tracked contacts and 9,060 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 mainframe modernization services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/mainframe-modernization-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 mainframe modernization services worldwide
RevenueBase records 646 matching company records for mainframe modernization services worldwide, with 32,617 tracked contacts and 9,060 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 mainframe modernization services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Sonata Softwaresonata-software.com HQ: Bangalore, IndiaReported employees: 5,001-10,000 | Bangalore, India | 5,001-10,000 | Exact match | 7,815 contacts → |
“Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Software AGsoftwareag.com HQ: Darmstadt, GermanyReported employees: Not recorded | Darmstadt, Germany | Not recorded | Exact match | 4,213 contacts → |
“Software AG has been helping enterprises run and evolve their core business applications for over 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ensonoensono.com HQ: Downers Grove, IL, United StatesReported employees: 1,001-5,000 | Downers Grove, IL, United States | 1,001-5,000 | Exact match | 3,542 contacts → |
“Ensono is an expert technology adviser and managed service provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Improvingimproving.com HQ: Plano, United StatesReported employees: 1,001-5,000 | Plano, United States | 1,001-5,000 | Exact match | 1,673 contacts → |
“Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Kumaran Systemskumaran.com HQ: Chennai, CA, IndiaReported employees: 1,001-5,000 | Chennai, CA, India | 1,001-5,000 | Exact match | 1,388 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Royal Cyber INCroyalcyber.com HQ: Naperville, United StatesReported employees: 1,001-5,000 | Naperville, United States | 1,001-5,000 | Exact match | 1,373 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | programmers.ioprogrammers.io HQ: Dallas, TX, United StatesReported employees: 1,001-5,000 | Dallas, TX, United States | 1,001-5,000 | Exact match | 1,063 contacts → |
“IBM i is evolving.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Node4node4.co.uk HQ: Derby, United KingdomReported employees: 1,001-5,000 | Derby, United Kingdom | 1,001-5,000 | Exact match | 714 contacts → |
“Node4 helps businesses achieve more with secure, AI‑powered cloud and managed service platforms.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Tmaxsofttmaxsoft.com HQ: Gyeonggi-do, South KoreaReported employees: 501-1,000 | Gyeonggi-do, South Korea | 501-1,000 | Exact match | 456 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Softweb Solutions Inc.softwebsolutions.com HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 432 contacts → |
“When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | RSDrocketsoftware.com HQ: Waltham, MA, United StatesReported employees: 1,001-5,000 | Waltham, MA, United States | 1,001-5,000 | Exact match | 419 contacts → |
“RSD is now a part of Rocket Software.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Fresche Solutionsfreschesolutions.com HQ: Montréal, QC, CanadaReported employees: 201-500 | Montréal, QC, Canada | 201-500 | Exact match | 365 contacts → |
“Fresche Solutions is an AI-powered IT modernization company that manages and maximizes the value of your IBM i and Microsoft systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Remiges Technologies PVT LTDremiges.tech HQ: Navi Mumbai, IndiaReported employees: 201-500 | Navi Mumbai, India | 201-500 | Exact match | 285 contacts → |
“Remiges is a software projects company focusing on app modernisation encompassing DB migration, devops, automation and UI/UX Our strength lies in providing robust, scalable…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Maintec Technologies - USAmaintec.com HQ: Raleigh, United StatesReported employees: 501-1,000 | Raleigh, United States | 501-1,000 | Exact match | 239 contacts → |
“Maintec Technologies offers globally compliant IT solutions that empower businesses to become more competitive by leveraging both onsite and offshore capabilities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Astadiaastadia.com HQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Expeed Softwareexpeed.com HQ: Columbus, United StatesReported employees: 51-200 | Columbus, United States | 51-200 | Exact match | 173 contacts → |
“Expeed Software is an engineering and technology partner helping businesses turn technology into a competitive advantage.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Platform 3 Solutionsplatform3solutions.com HQ: Minnetonka, United StatesReported employees: 201-500 | Minnetonka, United States | 201-500 | Exact match | 159 contacts → |
“Platform 3 Solutions is a global leader in end-to-end legacy application migration and retirement solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Most Technologiesmosttechnologies.com HQ: Atlanta, GA, IsraelReported employees: 51-200 | Atlanta, GA, Israel | 51-200 | Exact match | 125 contacts → |
“MOST Software Technologies helps customers leverage their investment in mainframe applications.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Callibritycallibrity.com HQ: Cincinnati, OH, United StatesReported employees: 51-200 | Cincinnati, OH, United States | 51-200 | Exact match | 108 contacts → |
“Callibrity is the software consultancy helping clients do more with technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Evolveware, INCevolveware.com HQ: Santa Clara, CA, United StatesReported employees: 51-200 | Santa Clara, CA, United States | 51-200 | Exact match | 108 contacts → |
“Founded in 2001, EvolveWare provides seamless application modernization journeys for enterprises, government organizations and global partners.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Devox Softwaredevoxsoftware.com HQ: Miami, United StatesReported employees: 51-200 | Miami, United States | 51-200 | Exact match | 96 contacts → |
“AI-accelerated.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | The Canton Groupcantongroup.com HQ: Baltimore, MD, United StatesReported employees: 51-200 | Baltimore, MD, United States | 51-200 | Exact match | 92 contacts → |
“The Canton Group is a business technology services firm empowering government agencies and enterprise organizations to modernize, automate, and secure mission-critical systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | AQL Technologiesaqltech.com HQ: Park Ridge, IL, United StatesReported employees: 51-200 | Park Ridge, IL, United States | 51-200 | Exact match | 90 contacts → |
“AQL Technologies is a Microsoft Solutions Partner in Digital App & Innovation and Data & AI providing the highest level of IT expertise and customer satisfaction for the past 15…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Treehouse Softwaretreehouse.com HQ: Sewickley, PA, United StatesReported employees: 11-50 | Sewickley, PA, United States | 11-50 | Exact match | 90 contacts → |
“Since 1982, Treehouse Software has been helping mainframe customers with innovative tools, services, and training.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | DB Best Technologiesdbbest.com HQ: Redmond, WA, United StatesReported employees: 201-500 | Redmond, WA, United States | 201-500 | Exact match | 85 contacts → |
“DB Best is internationally known for comprehensive data-management services, database development and migration, as well as creation of highly successful web and mobile systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 646 company matches
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Mainframe modernization services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
643 records in the displayed employee bands.
3 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 646 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Mainframe modernization services by location
5 lists · largest firstEvery Mainframe modernization services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for mainframe modernization services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many mainframe modernization services did RevenueBase find worldwide?
The saved snapshot records 646 matching company records, 32,617 tracked contacts and 9,060 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 mainframe modernization services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/mainframe-modernization-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗