Company lists · Data refreshed November 2026
Top 25 Legacy system support companies worldwide
RevenueBase identified 331 company matches for legacy system support companies worldwide as of November 2026 and tracks 8,238 professional contacts across them, including 1,497 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for legacy system support companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for legacy system support companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest legacy system support companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 | |||||
| 2 | 691 contacts → | ||||
Exact match “DecisionOne is the largest global independent technology support organization in the TPM and ISO markets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 354 contacts → | ||||
Exact match “PruTech Solutions Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 282 contacts → | ||||
Exact match “Spinnaker Support delivers independent third-party support and expert services for Oracle, SAP, VMware, and PostgreSQL environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 149 contacts → | ||||
Exact match “OK er öflugt tölvufyrirtæki sem sérhæfir sig í þjónustu og rekstri tölvukerfa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 116 contacts → | ||||
Exact match “Synergy Computers (Pvt.) Ltd is today one of the leading technology company in the country providing premier off the shelf solutions for Software Applications, Infrastructures and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 82 contacts → | ||||
Exact match “Softacom is a full-cycle business app migration and modernization provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 70 contacts → | ||||
Exact match “TIM Engineering Systems Solutions Corporation (TESSCORP) is the Information Technology (IT) company that provides enterprise solutions and support across industries dominated by…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 65 contacts → | ||||
Exact match “As the pioneer in COTS obsolescence management, GDCA is authorized by our OEM partners to continue to manufacture and repair the embedded legacy products critical to long-lasting…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 64 contacts → | ||||
Exact match “When Elio Castanuela launched Diversified Technical Services, Inc, in 1980, he envisioned a company with a fierce commitment to customer success and satisfaction.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 50 contacts → | ||||
Exact match “Zensar Technologies, a leading software and infrastructure management services provider, offers an end-to-end suite of Multivendor Support Service (MVS) Offerings, which will help…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 46 contacts → | ||||
Exact match “Who are we?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 43 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 33 contacts → | ||||
Exact match “Nous sommes des experts en #IBMi depuis plus de 30 ans.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 33 contacts → | ||||
Exact match “Shakti Infosolutions Pvt Ltd is a computer software company based out of 96/214 2nd Avenue, Chennai, Tamil Nadu, India.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 30 contacts → | ||||
Exact match “IT Support and Consulting Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 28 contacts → | ||||
Exact match “Newcorp is a UK-based IT infrastructure support provider with over 30 years of experience supporting the systems that businesses depend on most.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 27 contacts → | ||||
Exact match “M Networks er en dansk IT-virksomhed med over 20 års erfaring inden for IT-branchen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 26 contacts → | ||||
Exact match “As your trusted IT service provider, Consys Group will assess your needs, help you choose the best hardware and software to provide a hassle-free IT experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 26 contacts → | ||||
Exact match “NETmanage SA propose des solutions de maintenance et de surveillance de vos applications et de vos systèmes d'information (logiciels, matériels, postes, serveurs, sécurité…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 26 contacts → | ||||
Exact match “At Axiom Service Management, our mission is to provide reliable and efficient IT services to businesses.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 26 contacts → | ||||
Exact match “With deep expertise in system softwares we offer services in three modes:(i) Lights-On model MAINTAIN software products deployed in the field (ii) Flash model MODERNIZE software…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 26 contacts → | ||||
Exact match “Dein Unternehmen wird digitaler und die Anforderung an die IT immer komplexer?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 24 contacts → | ||||
Exact match “Heximus has been providing IT services since 2006.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 23 contacts → | ||||
Exact match “Notre ADN : la qualité des développements et l’industrialisation des processus.” 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 support companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 331 legacy system support companies worldwide
See the full list, filter by size, metro and specialty, and access 1,497 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Legacy system support companies 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 legacy system support companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “legacy system support companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,497 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 support companies by location
2 lists · largest firstEvery Legacy system support companies 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 “legacy system support companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many legacy system support companies are there worldwide?
RevenueBase identified 331 company matches for legacy system support companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Software AG tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most legacy system support companies?
The United States leads with 63 companies, followed by the United Kingdom (31). Every legacy system support companies list by country and city is linked on this page.
Which city has the most legacy system support companies?
London leads with 10 company records, followed by Hyderabad (5) and Sao Paulo (5).
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 1,497 professional contacts with verified work emails tracked across these 331 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 331 legacy system support companies 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 legacy system support companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 331 matching company records for legacy system support companies worldwide, with 8,238 tracked contacts and 1,497 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 legacy system support companies 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 |  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. | |||||
| 2 |  Decisiononedecisionone.comHQ: Havertown, PA, United StatesReported employees: 501-1,000 | Havertown, PA, United States | 501-1,000 | Exact match | 691 contacts → |
“DecisionOne is the largest global independent technology support organization in the TPM and ISO markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Prutech Solutions, INCprutech.comHQ: Iselin, United StatesReported employees: 501-1,000 | Iselin, United States | 501-1,000 | Exact match | 354 contacts → |
“PruTech Solutions Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Spinnaker Supportspinnakersupport.comHQ: Greenwood Village, United StatesReported employees: 201-500 | Greenwood Village, United States | 201-500 | Exact match | 282 contacts → |
“Spinnaker Support delivers independent third-party support and expert services for Oracle, SAP, VMware, and PostgreSQL environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  OKok.isHQ: Reykjavík, IcelandReported employees: 51-200 | Reykjavík, Iceland | 51-200 | Exact match | 149 contacts → |
“OK er öflugt tölvufyrirtæki sem sérhæfir sig í þjónustu og rekstri tölvukerfa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Synergy Computerssynergy.net.pkHQ: Karachi, PakistanReported employees: 201-500 | Karachi, Pakistan | 201-500 | Exact match | 116 contacts → |
“Synergy Computers (Pvt.) Ltd is today one of the leading technology company in the country providing premier off the shelf solutions for Software Applications, Infrastructures and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Softacomsoftacom.comHQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 82 contacts → |
“Softacom is a full-cycle business app migration and modernization provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  TIM Engineering Systems Solutions Corporationtimengineering.net.phHQ: Makati City, PhilippinesReported employees: 11-50 | Makati City, Philippines | 11-50 | Exact match | 70 contacts → |
“TIM Engineering Systems Solutions Corporation (TESSCORP) is the Information Technology (IT) company that provides enterprise solutions and support across industries dominated by…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Gdca, INCgdca.comHQ: Livermore, CA, United StatesReported employees: 11-50 | Livermore, CA, United States | 11-50 | Exact match | 65 contacts → |
“As the pioneer in COTS obsolescence management, GDCA is authorized by our OEM partners to continue to manufacture and repair the embedded legacy products critical to long-lasting…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Dtsi By Irysdtsi.comHQ: San Antonio, AL, United StatesReported employees: 51-200 | San Antonio, AL, United States | 51-200 | Exact match | 64 contacts → |
“When Elio Castanuela launched Diversified Technical Services, Inc, in 1980, he envisioned a company with a fierce commitment to customer success and satisfaction.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Zensar Technologieszensar.comHQ: Melville, NY, United StatesReported employees: Not recorded | Melville, NY, United States | Not recorded | Exact match | 50 contacts → |
“Zensar Technologies, a leading software and infrastructure management services provider, offers an end-to-end suite of Multivendor Support Service (MVS) Offerings, which will help…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Renapsrenaps.comHQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 46 contacts → |
“Who are we?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Varcons INCvarcons.comHQ: Chantilly, VA, United StatesReported employees: 11-50 | Chantilly, VA, United States | 11-50 | Exact match | 43 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 |  Gaia Mini Systemesgaia.frHQ: Lyon, FranceReported employees: 11-50 | Lyon, France | 11-50 | Exact match | 33 contacts → |
“Nous sommes des experts en #IBMi depuis plus de 30 ans.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Shakti Infosolutions PVT LTDshaktiinfosolutions.com HQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 33 contacts → |
“Shakti Infosolutions Pvt Ltd is a computer software company based out of 96/214 2nd Avenue, Chennai, Tamil Nadu, India.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Apogeo ITS S.R.Lapogeoits.comHQ: Rome, ItalyReported employees: 11-50 | Rome, Italy | 11-50 | Exact match | 30 contacts → |
“IT Support and Consulting Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Newcorpnewcorp.co.ukHQ: Congleton, United KingdomReported employees: 11-50 | Congleton, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Newcorp is a UK-based IT infrastructure support provider with over 30 years of experience supporting the systems that businesses depend on most.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  M Networks A Smnetworks.dkHQ: Nivå, DenmarkReported employees: 11-50 | Nivå, Denmark | 11-50 | Exact match | 27 contacts → |
“M Networks er en dansk IT-virksomhed med over 20 års erfaring inden for IT-branchen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Consys Group INCconsysgroup.comHQ: London, ON, CanadaReported employees: 11-50 | London, ON, Canada | 11-50 | Exact match | 26 contacts → |
“As your trusted IT service provider, Consys Group will assess your needs, help you choose the best hardware and software to provide a hassle-free IT experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Netmanage SAnetmanage.chHQ: La Grande Béroche, SwitzerlandReported employees: 11-50 | La Grande Béroche, Switzerland | 11-50 | Exact match | 26 contacts → |
“NETmanage SA propose des solutions de maintenance et de surveillance de vos applications et de vos systèmes d'information (logiciels, matériels, postes, serveurs, sécurité…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Axiom Service Managementaxiomsm.comHQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 26 contacts → |
“At Axiom Service Management, our mission is to provide reliable and efficient IT services to businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Gstamp Software Solutionsgstamp.inHQ: Pune, IndiaReported employees: 11-50 | Pune, India | 11-50 | Exact match | 26 contacts → |
“With deep expertise in system softwares we offer services in three modes:(i) Lights-On model MAINTAIN software products deployed in the field (ii) Flash model MODERNIZE software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Centron Gmbhcentron.deHQ: Hallstadt, GermanyReported employees: 11-50 | Hallstadt, Germany | 11-50 | Exact match | 26 contacts → |
“Dein Unternehmen wird digitaler und die Anforderung an die IT immer komplexer?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Heximusheximus.ltHQ: Vilnius, LithuaniaReported employees: 11-50 | Vilnius, Lithuania | 11-50 | Exact match | 24 contacts → |
“Heximus has been providing IT services since 2006.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Euraxieleuraxiel.frHQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 23 contacts → |
“Notre ADN : la qualité des développements et l’industrialisation des processus.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 331 company matches
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Legacy system support companies: 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
330 records in the displayed employee bands.
1 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 331 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 ↗
Legacy system support companies by location
2 lists · largest firstEvery Legacy system support companies 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 legacy system support companies?
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 legacy system support companies did RevenueBase find worldwide?
The saved snapshot records 331 matching company records, 8,238 tracked contacts and 1,497 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.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 legacy system support companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/legacy-system-support-companies.
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 legacy system support companies worldwide
RevenueBase records 331 matching company records for legacy system support companies worldwide, with 8,238 tracked contacts and 1,497 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 legacy system support companies 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 | 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. | |||||
| 2 | Decisiononedecisionone.com HQ: Havertown, PA, United StatesReported employees: 501-1,000 | Havertown, PA, United States | 501-1,000 | Exact match | 691 contacts → |
“DecisionOne is the largest global independent technology support organization in the TPM and ISO markets.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Prutech Solutions, INCprutech.com HQ: Iselin, United StatesReported employees: 501-1,000 | Iselin, United States | 501-1,000 | Exact match | 354 contacts → |
“PruTech Solutions Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Spinnaker Supportspinnakersupport.com HQ: Greenwood Village, United StatesReported employees: 201-500 | Greenwood Village, United States | 201-500 | Exact match | 282 contacts → |
“Spinnaker Support delivers independent third-party support and expert services for Oracle, SAP, VMware, and PostgreSQL environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | OKok.is HQ: Reykjavík, IcelandReported employees: 51-200 | Reykjavík, Iceland | 51-200 | Exact match | 149 contacts → |
“OK er öflugt tölvufyrirtæki sem sérhæfir sig í þjónustu og rekstri tölvukerfa.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Synergy Computerssynergy.net.pk HQ: Karachi, PakistanReported employees: 201-500 | Karachi, Pakistan | 201-500 | Exact match | 116 contacts → |
“Synergy Computers (Pvt.) Ltd is today one of the leading technology company in the country providing premier off the shelf solutions for Software Applications, Infrastructures and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Softacomsoftacom.com HQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 82 contacts → |
“Softacom is a full-cycle business app migration and modernization provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | TIM Engineering Systems Solutions Corporationtimengineering.net.ph HQ: Makati City, PhilippinesReported employees: 11-50 | Makati City, Philippines | 11-50 | Exact match | 70 contacts → |
“TIM Engineering Systems Solutions Corporation (TESSCORP) is the Information Technology (IT) company that provides enterprise solutions and support across industries dominated by…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Gdca, INCgdca.com HQ: Livermore, CA, United StatesReported employees: 11-50 | Livermore, CA, United States | 11-50 | Exact match | 65 contacts → |
“As the pioneer in COTS obsolescence management, GDCA is authorized by our OEM partners to continue to manufacture and repair the embedded legacy products critical to long-lasting…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Dtsi By Irysdtsi.com HQ: San Antonio, AL, United StatesReported employees: 51-200 | San Antonio, AL, United States | 51-200 | Exact match | 64 contacts → |
“When Elio Castanuela launched Diversified Technical Services, Inc, in 1980, he envisioned a company with a fierce commitment to customer success and satisfaction.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Zensar Technologieszensar.com HQ: Melville, NY, United StatesReported employees: Not recorded | Melville, NY, United States | Not recorded | Exact match | 50 contacts → |
“Zensar Technologies, a leading software and infrastructure management services provider, offers an end-to-end suite of Multivendor Support Service (MVS) Offerings, which will help…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Renapsrenaps.com HQ: Montréal, QC, CanadaReported employees: 51-200 | Montréal, QC, Canada | 51-200 | Exact match | 46 contacts → |
“Who are we?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Varcons INCvarcons.com HQ: Chantilly, VA, United StatesReported employees: 11-50 | Chantilly, VA, United States | 11-50 | Exact match | 43 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 14 | Gaia Mini Systemesgaia.fr HQ: Lyon, FranceReported employees: 11-50 | Lyon, France | 11-50 | Exact match | 33 contacts → |
“Nous sommes des experts en #IBMi depuis plus de 30 ans.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Shakti Infosolutions PVT LTDshaktiinfosolutions.com HQ: Chennai, IndiaReported employees: 51-200 | Chennai, India | 51-200 | Exact match | 33 contacts → |
“Shakti Infosolutions Pvt Ltd is a computer software company based out of 96/214 2nd Avenue, Chennai, Tamil Nadu, India.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Apogeo ITS S.R.Lapogeoits.com HQ: Rome, ItalyReported employees: 11-50 | Rome, Italy | 11-50 | Exact match | 30 contacts → |
“IT Support and Consulting Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Newcorpnewcorp.co.uk HQ: Congleton, United KingdomReported employees: 11-50 | Congleton, United Kingdom | 11-50 | Exact match | 28 contacts → |
“Newcorp is a UK-based IT infrastructure support provider with over 30 years of experience supporting the systems that businesses depend on most.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | M Networks A Smnetworks.dk HQ: Nivå, DenmarkReported employees: 11-50 | Nivå, Denmark | 11-50 | Exact match | 27 contacts → |
“M Networks er en dansk IT-virksomhed med over 20 års erfaring inden for IT-branchen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Consys Group INCconsysgroup.com HQ: London, ON, CanadaReported employees: 11-50 | London, ON, Canada | 11-50 | Exact match | 26 contacts → |
“As your trusted IT service provider, Consys Group will assess your needs, help you choose the best hardware and software to provide a hassle-free IT experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Netmanage SAnetmanage.ch HQ: La Grande Béroche, SwitzerlandReported employees: 11-50 | La Grande Béroche, Switzerland | 11-50 | Exact match | 26 contacts → |
“NETmanage SA propose des solutions de maintenance et de surveillance de vos applications et de vos systèmes d'information (logiciels, matériels, postes, serveurs, sécurité…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Axiom Service Managementaxiomsm.com HQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 26 contacts → |
“At Axiom Service Management, our mission is to provide reliable and efficient IT services to businesses.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Gstamp Software Solutionsgstamp.in HQ: Pune, IndiaReported employees: 11-50 | Pune, India | 11-50 | Exact match | 26 contacts → |
“With deep expertise in system softwares we offer services in three modes:(i) Lights-On model MAINTAIN software products deployed in the field (ii) Flash model MODERNIZE software…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Centron Gmbhcentron.de HQ: Hallstadt, GermanyReported employees: 11-50 | Hallstadt, Germany | 11-50 | Exact match | 26 contacts → |
“Dein Unternehmen wird digitaler und die Anforderung an die IT immer komplexer?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Heximusheximus.lt HQ: Vilnius, LithuaniaReported employees: 11-50 | Vilnius, Lithuania | 11-50 | Exact match | 24 contacts → |
“Heximus has been providing IT services since 2006.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Euraxieleuraxiel.fr HQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 23 contacts → |
“Notre ADN : la qualité des développements et l’industrialisation des processus.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 331 company matches
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Legacy system support companies: 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
330 records in the displayed employee bands.
1 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 331 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 ↗
Legacy system support companies by location
2 lists · largest firstEvery Legacy system support companies 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 legacy system support companies?
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 legacy system support companies did RevenueBase find worldwide?
The saved snapshot records 331 matching company records, 8,238 tracked contacts and 1,497 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 legacy system support companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/legacy-system-support-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗