Company lists · Data refreshed September 2026
Top 25 Legacy system integration developers worldwide
RevenueBase identified 89 company matches for legacy system integration developers worldwide as of September 2026 and tracks 602 professional contacts across them, including 152 with verified work emails. The United States is the largest market and Dublin the largest hub.
This list covers company matches for legacy system integration developers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for legacy system integration developers 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 integration developers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 47 contacts → | ||||
Exact match “Our focus is to build agile solutions across devices and bundled with a middleware that enables our clients to expose multiple access points to their LOB Applications.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 32 contacts → | ||||
Exact match “Since 1995 Flynet have been building some of the industry's most sophisticated web based solutions for Mainframe, Unix, IBM i, VMS, VAX and MultiValue systems.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 29 contacts → | ||||
Exact match “TechBerry is a software product company that offers a low code integration platform, which enables AS400 enterprise applications such as core banking and insurance to connect to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 21 contacts → | ||||
Exact match “Collabrium Systems, LLC provides systems integration services that include design, development, testing, implementation and support of business applications.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 20 contacts → | ||||
Exact match “At Eradani, we understand the wisdom of the ancient saying that you cannot know where you are going if you do not understand where you have been.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 15 contacts → | ||||
Exact match “En integration märks inte när den fungerar.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 14 contacts → | ||||
Exact match “Strategy, Architecture, Development and Testing are key components of our business that help us deliver cost effective and flexible solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 14 contacts → | ||||
Exact match “Als Systeem Integratie en Enterprise Application Integration ( EAI ) specialist is Response BV toonaangevend binnen de Benelux.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 14 contacts → | ||||
Exact match “Acqua, brings an innovative and proven approach to how organizations design, build, and manage their integrations and APIs so they can modernize legacy applications, move to the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 13 contacts → | ||||
Exact match “At RDM Infinity, we work with the system you have to create the solution you need.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 13 contacts → | ||||
Exact match “Oltre 30 anni di esperienza in verticalizzazione di sistemi rendono GSA il partner ideale a cui affidare la progettazione e la realizzazione di integrazioni software atte a…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Go4IT Solutions, somos una spin-off de Tecnalia dedicada a la modernización automática de aplicaciones legacy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “With 20 years and over 120 successful migration projects in Brazil and abroad, Xseed has experience and skill in legacy systems migrations from mainframes to several open…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Our world is diverse and technology and data are the same.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “We help our clients build, manage and scale the world’s best application integration platforms solving the most complex integration challenges.*Proud Talend System Integrator…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “Durante más de 10 años hemos trabajado en la evolución de sistemas empresariales críticos en el sector financiero.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “itheis is a major actor in the IBM i iSeries System i modernization market.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 6 contacts → | ||||
Exact match “A team of experienced developers that has been working together for almost 5 years.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “The DARQ Room is a development firm that specializes in streamlining and connecting disparate software systems.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Joint Technologies is an Independent Software Vendor and System integrator started in It has developed the capabilities to integrate software and third-party products in order to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “ClientServ Technologies helps businesses untangle their IT, clearly, efficiently, and without the headaches.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “Linknow IO provides system integration as a service.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “At middleware technologies®, we specialise in empowering enterprises to unlock the full potential of their legacy systems through seamless integration and modernisation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 4 contacts → | ||||
Exact match “Schnittstellen, aber beherrschbar: Wir entwickeln und betreiben Integrationen auf Basis einer modernen Middleware-Architektur.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “legacy system integration developers”. 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 89 legacy system integration developers worldwide
See the full list, filter by size, metro and specialty, and access 152 tracked professional contacts with verified work emails. Direct dials are available where recorded.
Free signup · no credit card
Legacy system integration developers worldwide at a glance
As of Sep 20, 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 integration developers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “legacy system integration developers” 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 152 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Legacy system integration developers by location
1 lists · largest firstEvery Legacy system integration developers 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 integration developers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many legacy system integration developers are there worldwide?
RevenueBase identified 89 company matches for legacy system integration developers worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
TTH Consulting Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most legacy system integration developers?
The United States leads with 25 companies. Every legacy system integration developers list by country and city is linked on this page.
Which city has the most legacy system integration developers?
Dublin leads with 3 company records, followed by Aix En Provence (1) and Austin (1).
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 152 professional contacts with verified work emails tracked across these 89 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 89 legacy system integration developers worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 integration developers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 89 matching company records for legacy system integration developers worldwide, with 602 tracked contacts and 152 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: September 20, 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 integration developers 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 |  TTH Consulting Servicestthconsulting.comHQ: Navi Mumbai, IndiaReported employees: 51-200 | Navi Mumbai, India | 51-200 | Exact match | 47 contacts → |
“Our focus is to build agile solutions across devices and bundled with a middleware that enables our clients to expose multiple access points to their LOB Applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Flynetflynetviewer.comHQ: Burwell, United KingdomReported employees: 11-50 | Burwell, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Since 1995 Flynet have been building some of the industry's most sophisticated web based solutions for Mainframe, Unix, IBM i, VMS, VAX and MultiValue systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Techberry Company Limitedtechberry.co.th HQ: Bangkok, ThailandReported employees: 51-200 | Bangkok, Thailand | 51-200 | Exact match | 29 contacts → |
“TechBerry is a software product company that offers a low code integration platform, which enables AS400 enterprise applications such as core banking and insurance to connect to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Collabrium Systems, LLCcollabriumsystems.comHQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 21 contacts → |
“Collabrium Systems, LLC provides systems integration services that include design, development, testing, implementation and support of business applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Eradanieradani.comHQ: Dublin, CA, United StatesReported employees: 11-50 | Dublin, CA, United States | 11-50 | Exact match | 20 contacts → |
“At Eradani, we understand the wisdom of the ancient saying that you cannot know where you are going if you do not understand where you have been.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Standout ABstandout.seHQ: Växjö, SwedenReported employees: 11-50 | Växjö, Sweden | 11-50 | Exact match | 15 contacts → |
“En integration märks inte när den fungerar.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Celeste Digitalcelestedigital.seHQ: Gothenburg, SwedenReported employees: 11-50 | Gothenburg, Sweden | 11-50 | Exact match | 14 contacts → |
“Strategy, Architecture, Development and Testing are key components of our business that help us deliver cost effective and flexible solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Response B.Vresponse.nl HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 14 contacts → |
“Als Systeem Integratie en Enterprise Application Integration ( EAI ) specialist is Response BV toonaangevend binnen de Benelux.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  ACQUAacqua-it.comHQ: Nordelta, ArgentinaReported employees: 11-50 | Nordelta, Argentina | 11-50 | Exact match | 14 contacts → |
“Acqua, brings an innovative and proven approach to how organizations design, build, and manage their integrations and APIs so they can modernize legacy applications, move to the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | RDM Infinityrdminfinity.com HQ: Carson City, NV, United StatesReported employees: 1-10 | Carson City, NV, United States | 1-10 | Exact match | 13 contacts → |
“At RDM Infinity, we work with the system you have to create the solution you need.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  GSAgsanet.itHQ: Modena, ItalyReported employees: 1-10 | Modena, Italy | 1-10 | Exact match | 13 contacts → |
“Oltre 30 anni di esperienza in verticalizzazione di sistemi rendono GSA il partner ideale a cui affidare la progettazione e la realizzazione di integrazioni software atte a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Go4it Solutionsgo4it.solutionsHQ: Zamudio, SpainReported employees: 11-50 | Zamudio, Spain | 11-50 | Exact match | 10 contacts → |
“Go4IT Solutions, somos una spin-off de Tecnalia dedicada a la modernización automática de aplicaciones legacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Xseed Software & Consultoriaxseed.com.br HQ: Fortaleza, BrazilReported employees: 11-50 | Fortaleza, Brazil | 11-50 | Exact match | 10 contacts → |
“With 20 years and over 120 successful migration projects in Brazil and abroad, Xseed has experience and skill in legacy systems migrations from mainframes to several open…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Erpio ONEerpio.oneHQ: Brno, Czech RepublicReported employees: 11-50 | Brno, Czech Republic | 11-50 | Exact match | 9 contacts → |
“Our world is diverse and technology and data are the same.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Datagrate, INCdatagrate.comHQ: Saint Petersburg, FL, United StatesReported employees: 1-10 | Saint Petersburg, FL, United States | 1-10 | Exact match | 9 contacts → |
“We help our clients build, manage and scale the world’s best application integration platforms solving the most complex integration challenges.*Proud Talend System Integrator…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Datatek, INCdatatek-net.comHQ: Durham, NC, United StatesReported employees: 11-50 | Durham, NC, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 |  Código Geekcodigogeek.com.mxHQ: Ecatepec De Morelos, MexicoReported employees: 11-50 | Ecatepec De Morelos, Mexico | 11-50 | Exact match | 8 contacts → |
“Durante más de 10 años hemos trabajado en la evolución de sistemas empresariales críticos en el sector financiero.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Itheisitheis.com HQ: Aix En Provence Cedex 3, FranceReported employees: 1-10 | Aix En Provence Cedex 3, France | 1-10 | Exact match | 7 contacts → |
“itheis is a major actor in the IBM i iSeries System i modernization market.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  codeweaver.plcodeweaver.plHQ: Warsaw, PolandReported employees: 51-200 | Warsaw, Poland | 51-200 | Exact match | 6 contacts → |
“A team of experienced developers that has been working together for almost 5 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  The Darq Roomthedarqroom.com.auHQ: Narre Warren, AustraliaReported employees: 1-10 | Narre Warren, Australia | 1-10 | Exact match | 5 contacts → |
“The DARQ Room is a development firm that specializes in streamlining and connecting disparate software systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Joint Technologies SRL - Piacenzajoint-tech.itHQ: Piacenza, ItalyReported employees: 1-10 | Piacenza, Italy | 1-10 | Exact match | 4 contacts → |
“Joint Technologies is an Independent Software Vendor and System integrator started in It has developed the capabilities to integrate software and third-party products in order to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Clientserv Technologies INCclientserv.comHQ: Surrey, BC, CanadaReported employees: 11-50 | Surrey, BC, Canada | 11-50 | Exact match | 4 contacts → |
“ClientServ Technologies helps businesses untangle their IT, clearly, efficiently, and without the headaches.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Linknow IOlinknow.ioHQ: Linköping, SwedenReported employees: 1-10 | Linköping, Sweden | 1-10 | Exact match | 4 contacts → |
“Linknow IO provides system integration as a service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Middleware Technologiesmiddlewaretechnologies.co.zaHQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 4 contacts → |
“At middleware technologies®, we specialise in empowering enterprises to unlock the full potential of their legacy systems through seamless integration and modernisation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Datanaut Gmbhdatanaut.euHQ: Hildesheim, GermanyReported employees: 1-10 | Hildesheim, Germany | 1-10 | Exact match | 4 contacts → |
“Schnittstellen, aber beherrschbar: Wir entwickeln und betreiben Integrationen auf Basis einer modernen Middleware-Architektur.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 89 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Legacy system integration developers: dataset insights
September 20, 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
89 records in the displayed employee bands.
0 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 89 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: September 20, 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 integration developers by location
1 lists · largest firstEvery Legacy system integration developers 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 integration developers?
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 integration developers did RevenueBase find worldwide?
The saved snapshot records 89 matching company records, 602 tracked contacts and 152 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: September 20, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 legacy system integration developers worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/legacy-system-integration-developers.
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 integration developers worldwide
RevenueBase records 89 matching company records for legacy system integration developers worldwide, with 602 tracked contacts and 152 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: September 20, 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 integration developers 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 | TTH Consulting Servicestthconsulting.com HQ: Navi Mumbai, IndiaReported employees: 51-200 | Navi Mumbai, India | 51-200 | Exact match | 47 contacts → |
“Our focus is to build agile solutions across devices and bundled with a middleware that enables our clients to expose multiple access points to their LOB Applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Flynetflynetviewer.com HQ: Burwell, United KingdomReported employees: 11-50 | Burwell, United Kingdom | 11-50 | Exact match | 32 contacts → |
“Since 1995 Flynet have been building some of the industry's most sophisticated web based solutions for Mainframe, Unix, IBM i, VMS, VAX and MultiValue systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Techberry Company Limitedtechberry.co.th HQ: Bangkok, ThailandReported employees: 51-200 | Bangkok, Thailand | 51-200 | Exact match | 29 contacts → |
“TechBerry is a software product company that offers a low code integration platform, which enables AS400 enterprise applications such as core banking and insurance to connect to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Collabrium Systems, LLCcollabriumsystems.com HQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 21 contacts → |
“Collabrium Systems, LLC provides systems integration services that include design, development, testing, implementation and support of business applications.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Eradanieradani.com HQ: Dublin, CA, United StatesReported employees: 11-50 | Dublin, CA, United States | 11-50 | Exact match | 20 contacts → |
“At Eradani, we understand the wisdom of the ancient saying that you cannot know where you are going if you do not understand where you have been.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Standout ABstandout.se HQ: Växjö, SwedenReported employees: 11-50 | Växjö, Sweden | 11-50 | Exact match | 15 contacts → |
“En integration märks inte när den fungerar.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Celeste Digitalcelestedigital.se HQ: Gothenburg, SwedenReported employees: 11-50 | Gothenburg, Sweden | 11-50 | Exact match | 14 contacts → |
“Strategy, Architecture, Development and Testing are key components of our business that help us deliver cost effective and flexible solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Response B.Vresponse.nl HQ: United StatesReported employees: 1-10 | United States | 1-10 | Exact match | 14 contacts → |
“Als Systeem Integratie en Enterprise Application Integration ( EAI ) specialist is Response BV toonaangevend binnen de Benelux.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | ACQUAacqua-it.com HQ: Nordelta, ArgentinaReported employees: 11-50 | Nordelta, Argentina | 11-50 | Exact match | 14 contacts → |
“Acqua, brings an innovative and proven approach to how organizations design, build, and manage their integrations and APIs so they can modernize legacy applications, move to the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | RDM Infinityrdminfinity.com HQ: Carson City, NV, United StatesReported employees: 1-10 | Carson City, NV, United States | 1-10 | Exact match | 13 contacts → |
“At RDM Infinity, we work with the system you have to create the solution you need.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | GSAgsanet.it HQ: Modena, ItalyReported employees: 1-10 | Modena, Italy | 1-10 | Exact match | 13 contacts → |
“Oltre 30 anni di esperienza in verticalizzazione di sistemi rendono GSA il partner ideale a cui affidare la progettazione e la realizzazione di integrazioni software atte a…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Go4it Solutionsgo4it.solutions HQ: Zamudio, SpainReported employees: 11-50 | Zamudio, Spain | 11-50 | Exact match | 10 contacts → |
“Go4IT Solutions, somos una spin-off de Tecnalia dedicada a la modernización automática de aplicaciones legacy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Xseed Software & Consultoriaxseed.com.br HQ: Fortaleza, BrazilReported employees: 11-50 | Fortaleza, Brazil | 11-50 | Exact match | 10 contacts → |
“With 20 years and over 120 successful migration projects in Brazil and abroad, Xseed has experience and skill in legacy systems migrations from mainframes to several open…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Erpio ONEerpio.one HQ: Brno, Czech RepublicReported employees: 11-50 | Brno, Czech Republic | 11-50 | Exact match | 9 contacts → |
“Our world is diverse and technology and data are the same.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Datagrate, INCdatagrate.com HQ: Saint Petersburg, FL, United StatesReported employees: 1-10 | Saint Petersburg, FL, United States | 1-10 | Exact match | 9 contacts → |
“We help our clients build, manage and scale the world’s best application integration platforms solving the most complex integration challenges.*Proud Talend System Integrator…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Datatek, INCdatatek-net.com HQ: Durham, NC, United StatesReported employees: 11-50 | Durham, NC, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 17 | Código Geekcodigogeek.com.mx HQ: Ecatepec De Morelos, MexicoReported employees: 11-50 | Ecatepec De Morelos, Mexico | 11-50 | Exact match | 8 contacts → |
“Durante más de 10 años hemos trabajado en la evolución de sistemas empresariales críticos en el sector financiero.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Itheisitheis.com HQ: Aix En Provence Cedex 3, FranceReported employees: 1-10 | Aix En Provence Cedex 3, France | 1-10 | Exact match | 7 contacts → |
“itheis is a major actor in the IBM i iSeries System i modernization market.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | codeweaver.plcodeweaver.pl HQ: Warsaw, PolandReported employees: 51-200 | Warsaw, Poland | 51-200 | Exact match | 6 contacts → |
“A team of experienced developers that has been working together for almost 5 years.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | The Darq Roomthedarqroom.com.au HQ: Narre Warren, AustraliaReported employees: 1-10 | Narre Warren, Australia | 1-10 | Exact match | 5 contacts → |
“The DARQ Room is a development firm that specializes in streamlining and connecting disparate software systems.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Joint Technologies SRL - Piacenzajoint-tech.it HQ: Piacenza, ItalyReported employees: 1-10 | Piacenza, Italy | 1-10 | Exact match | 4 contacts → |
“Joint Technologies is an Independent Software Vendor and System integrator started in It has developed the capabilities to integrate software and third-party products in order to…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Clientserv Technologies INCclientserv.com HQ: Surrey, BC, CanadaReported employees: 11-50 | Surrey, BC, Canada | 11-50 | Exact match | 4 contacts → |
“ClientServ Technologies helps businesses untangle their IT, clearly, efficiently, and without the headaches.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Linknow IOlinknow.io HQ: Linköping, SwedenReported employees: 1-10 | Linköping, Sweden | 1-10 | Exact match | 4 contacts → |
“Linknow IO provides system integration as a service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Middleware Technologiesmiddlewaretechnologies.co.za HQ: Johannesburg, South AfricaReported employees: 1-10 | Johannesburg, South Africa | 1-10 | Exact match | 4 contacts → |
“At middleware technologies®, we specialise in empowering enterprises to unlock the full potential of their legacy systems through seamless integration and modernisation.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Datanaut Gmbhdatanaut.eu HQ: Hildesheim, GermanyReported employees: 1-10 | Hildesheim, Germany | 1-10 | Exact match | 4 contacts → |
“Schnittstellen, aber beherrschbar: Wir entwickeln und betreiben Integrationen auf Basis einer modernen Middleware-Architektur.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 89 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Legacy system integration developers: dataset insights
September 20, 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
89 records in the displayed employee bands.
0 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 89 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: September 20, 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 integration developers by location
1 lists · largest firstEvery Legacy system integration developers 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 integration developers?
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 integration developers did RevenueBase find worldwide?
The saved snapshot records 89 matching company records, 602 tracked contacts and 152 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: September 20, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 legacy system integration developers worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/legacy-system-integration-developers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗