Company lists · Data refreshed November 2026
Top 25 Legacy system integration services based in the United States
RevenueBase identified 726 company matches for legacy system integration services associated with the United States as of November 2026 and tracks 104,764 professional contacts across them, including 32,596 with verified work emails. New York is the largest hub.
This list covers company matches for legacy system integration services associated with the United States, 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.
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 services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 86,844 contacts → | ||||
Exact match “DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 2,725 contacts → | ||||
Exact match “Connect everything to achieve anything™ #TeamBoomi” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 480 contacts → | ||||
Exact match “Our Mission: TIG will earn its place as a trusted partner to our clients, providing only the highest level of service, value and advanced technology to power their strategic…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 448 contacts → | ||||
Exact match “We engineer the systems that power your business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 432 contacts → | ||||
Exact match “When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 372 contacts → | ||||
Exact match “Groundswell is a specialized, highly agile systems integrator delivering advanced technology solutions as a trusted mission partner to federal agencies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 345 contacts → | ||||
Exact match “As a partner to some of the world’s largest companies, Bailiwick provides professionally managed technology integration and IT expertise for complex, large-scale IT initiatives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 336 contacts → | ||||
Exact match “SiRA Consulting is a Certified MBE consulting company that was founded in 2012.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 303 contacts → | ||||
Exact match “Blackstone eIT is a leading System Integrator (SI) and Independent Software Vendor (ISV), globally dedicated to engineering transformative enterprise solutions and intelligent…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 283 contacts → | ||||
Exact match “Infomerica is a leading provider of digital transformation and cloud solutions that enable enterprises to achieve seamless customer experiences, enhanced business efficiency, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 230 contacts → | ||||
Exact match “Fortitude Systems provides your business with the horsepower to get the job done to drive your IT process faster and more efficiently.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 226 contacts → | ||||
Exact match “Infobahn specializes in full-lifecycle project and consulting efforts conducted in strategic partnership with some of the world's most prominent companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 221 contacts → | ||||
Exact match “Headquartered in McLean, Va, B&A is a leading information technology systems integrator providing solutions through the following service offerings: Modernization &…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 218 contacts → | ||||
Exact match “With over 20 years of experience in bespoke digital transformation at both the public and private level, Mi-Case is known as much for our white-glove approach to client support as…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 216 contacts → | ||||
Exact match “Krasan Consulting Services is a Chicago-based boutique management consulting and technology solutions integrator.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 208 contacts → | ||||
Exact match “Astadia is the industry leader for mainframe migrations and modernizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 183 contacts → | ||||
Exact match “At VAE, Inc, we build, secure and support large-scale enterprise IT infrastructures.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 179 contacts → | ||||
Exact match “Invasystems, Inc, is a global enterprise solution provider and systems Integrator, helping customers transform to an Intelligent enterprise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 175 contacts → | ||||
Exact match “Strategic Business Systems, Inc.(SBS) is an Information Technology (IT) Services Firm headquartered in the Washington, DC metropolitan area.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 172 contacts → | ||||
Exact match “WEI is a premier IT solutions provider focused on building and extending quality relationships with clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 169 contacts → | ||||
Exact match “CI Global has been in the ERP ecosystem since 1998.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 160 contacts → | ||||
Exact match “Unleash your AI Transformation with Sigmasoft.AI.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 159 contacts → | ||||
Exact match “Alliance Technology Group is a North American Systems Integrator & IT Solutions and Services company.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 150 contacts → | ||||
Exact match “Coolsoft LLC is a Certified Minority Business Enterprise (MBE), focused on delivering smart, next-generation business solutions that help enterprises across the world overcome…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 139 contacts → | ||||
Exact match “IQZ Systems is a global strategic technology and solutions integration firm headquartered in Atlanta.” 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 integration services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 726 legacy system integration services based in the United States
See the full list, filter by size, metro and specialty, and access 32,596 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Legacy system integration services based in the United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 726 companies.
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.
- What qualifies
- Company records associated with the United States whose business descriptions match “legacy system integration services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 32,596 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.
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 services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many legacy system integration services are there based in the United States?
RevenueBase identified 726 company matches for legacy system integration services associated with the United States 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?
DXC Technology tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most legacy system integration services?
New York leads with 19 company records, followed by Atlanta (18) and Austin (15).
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 32,596 professional contacts with verified work emails tracked across these 726 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 726 legacy system integration services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Legacy system integration services by geography
- Legacy system integration services based in Melbourne, Australia
- Legacy system integration services based in Sao Paulo, Brazil
- Legacy system integration services based in Bangalore, India
- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom
- Legacy system integration services based in Argentina
- Legacy system integration services based in Australia
- Legacy system integration services based in Belgium
- Legacy system integration services based in Brazil
- Legacy system integration services based in Canada
- Legacy system integration services based in Chile
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
- All company lists
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- Lists A-Z
- New lists
- Legacy system integration services based in Melbourne, Australia
- Legacy system integration services based in Sao Paulo, Brazil
- Legacy system integration services based in Bangalore, India
- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom
Company intelligence · public preview
Top 25 legacy system integration services based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 726 matching company records for legacy system integration services based in the United States, with 104,764 tracked contacts and 32,596 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 integration services based in the United States
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 |  DXC Technologydxc.comHQ: Ashburn, VA, United StatesReported employees: 10001+ | Ashburn, VA, United States | 10001+ | Exact match | 86,844 contacts → |
“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  BOOMIboomi.comHQ: Conshohocken, PA, United StatesReported employees: 1,001-5,000 | Conshohocken, PA, United States | 1,001-5,000 | Exact match | 2,725 contacts → |
“Connect everything to achieve anything™ #TeamBoomi” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Technology Integration Grouptig.comHQ: San Diego, GA, United StatesReported employees: 201-500 | San Diego, GA, United States | 201-500 | Exact match | 480 contacts → |
“Our Mission: TIG will earn its place as a trusted partner to our clients, providing only the highest level of service, value and advanced technology to power their strategic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Object Computing, INCobjectcomputing.comHQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 448 contacts → |
“We engineer the systems that power your business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Softweb Solutions Inc.softwebsolutions.comHQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 432 contacts → |
“When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Groundswellgswell.comHQ: Mclean, VA, United StatesReported employees: 201-500 | Mclean, VA, United States | 201-500 | Exact match | 372 contacts → |
“Groundswell is a specialized, highly agile systems integrator delivering advanced technology solutions as a trusted mission partner to federal agencies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bailiwick, An Eplus Technology, Inc. Companybailiwick.comHQ: Chaska, MN, United StatesReported employees: 201-500 | Chaska, MN, United States | 201-500 | Exact match | 345 contacts → |
“As a partner to some of the world’s largest companies, Bailiwick provides professionally managed technology integration and IT expertise for complex, large-scale IT initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Sira Consulting, An INC 5000 Companysiraconsultinginc.comHQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 336 contacts → |
“SiRA Consulting is a Certified MBE consulting company that was founded in 2012.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Blackstone EITblackstoneeit.comHQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 303 contacts → |
“Blackstone eIT is a leading System Integrator (SI) and Independent Software Vendor (ISV), globally dedicated to engineering transformative enterprise solutions and intelligent…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Infomericainfomericainc.comHQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 283 contacts → |
“Infomerica is a leading provider of digital transformation and cloud solutions that enable enterprises to achieve seamless customer experiences, enhanced business efficiency, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Fortitude Systemsfortitudesys.comHQ: Falls Church, VA, United StatesReported employees: 501-1,000 | Falls Church, VA, United States | 501-1,000 | Exact match | 230 contacts → |
“Fortitude Systems provides your business with the horsepower to get the job done to drive your IT process faster and more efficiently.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Infobahn Softworld INCinfobahnsw.comHQ: San Jose, IL, United StatesReported employees: 1,001-5,000 | San Jose, IL, United States | 1,001-5,000 | Exact match | 226 contacts → |
“Infobahn specializes in full-lifecycle project and consulting efforts conducted in strategic partnership with some of the world's most prominent companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Bart & Associates, INCbna-inc.comHQ: Mclean, AL, United StatesReported employees: 1,001-5,000 | Mclean, AL, United States | 1,001-5,000 | Exact match | 221 contacts → |
“Headquartered in McLean, Va, B&A is a leading information technology systems integrator providing solutions through the following service offerings: Modernization &…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Mi-Casemi-case.comHQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 218 contacts → |
“With over 20 years of experience in bespoke digital transformation at both the public and private level, Mi-Case is known as much for our white-glove approach to client support as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Krasan Consulting Serviceskrasanconsulting.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 216 contacts → |
“Krasan Consulting Services is a Chicago-based boutique management consulting and technology solutions integrator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Astadiaastadia.comHQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Vae, INCvaeit.comHQ: Springfield, VA, United StatesReported employees: 201-500 | Springfield, VA, United States | 201-500 | Exact match | 183 contacts → |
“At VAE, Inc, we build, secure and support large-scale enterprise IT infrastructures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Invasystems INCinvasystems.comHQ: Sugar Land, TX, United StatesReported employees: 201-500 | Sugar Land, TX, United States | 201-500 | Exact match | 179 contacts → |
“Invasystems, Inc, is a global enterprise solution provider and systems Integrator, helping customers transform to an Intelligent enterprise.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Strategic Business Systems SBSsbsplanet.comHQ: Chantilly, FL, United StatesReported employees: 201-500 | Chantilly, FL, United States | 201-500 | Exact match | 175 contacts → |
“Strategic Business Systems, Inc.(SBS) is an Information Technology (IT) Services Firm headquartered in the Washington, DC metropolitan area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  WEI Worldcom Exchange, INCwei.comHQ: Salem, NH, United StatesReported employees: 51-200 | Salem, NH, United States | 51-200 | Exact match | 172 contacts → |
“WEI is a premier IT solutions provider focused on building and extending quality relationships with clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  CI Globalciglobaltech.comHQ: Colonia, NJ, United StatesReported employees: 51-200 | Colonia, NJ, United States | 51-200 | Exact match | 169 contacts → |
“CI Global has been in the ERP ecosystem since 1998.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Sigmasoftsigmasoft.aiHQ: Santa Clara, CA, United StatesReported employees: 201-500 | Santa Clara, CA, United States | 201-500 | Exact match | 160 contacts → |
“Unleash your AI Transformation with Sigmasoft.AI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Alliance Technology Groupalliance-it.comHQ: Hanover, PA, United StatesReported employees: 51-200 | Hanover, PA, United States | 51-200 | Exact match | 159 contacts → |
“Alliance Technology Group is a North American Systems Integrator & IT Solutions and Services company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Coolsoft LLCcoolsofttech.comHQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 150 contacts → |
“Coolsoft LLC is a Certified Minority Business Enterprise (MBE), focused on delivering smart, next-generation business solutions that help enterprises across the world overcome…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  IQZ Systemsiqzsystems.comHQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 139 contacts → |
“IQZ Systems is a global strategic technology and solutions integration firm headquartered in Atlanta.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 726 company matches
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Legacy system integration services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
724 records in the displayed employee bands.
2 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 726 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 ↗
Questions about this company list
What does Exact match mean for legacy system integration services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system integration services did RevenueBase find based in the United States?
The saved snapshot records 726 matching company records, 104,764 tracked contacts and 32,596 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
Legacy system integration services by geography
- Legacy system integration services based in Melbourne, Australia
- Legacy system integration services based in Sao Paulo, Brazil
- Legacy system integration services based in Bangalore, India
- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom
- Legacy system integration services based in Argentina
- Legacy system integration services based in Australia
- Legacy system integration services based in Belgium
- Legacy system integration services based in Brazil
- Legacy system integration services based in Canada
- Legacy system integration services based in Chile
Cite this list
RevenueBase Data Team. Top 25 legacy system integration services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/legacy-system-integration-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Legacy system integration services based in Melbourne, Australia
- Legacy system integration services based in Sao Paulo, Brazil
- Legacy system integration services based in Bangalore, India
- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom
Company intelligence · public preview
Top 25 legacy system integration services based in the United States
RevenueBase records 726 matching company records for legacy system integration services based in the United States, with 104,764 tracked contacts and 32,596 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 integration services based in the United States
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 | DXC Technologydxc.com HQ: Ashburn, VA, United StatesReported employees: 10001+ | Ashburn, VA, United States | 10001+ | Exact match | 86,844 contacts → |
“DXC Technology helps global companies run their mission-critical systems and operations while modernizing IT, optimizing data architectures, and ensuring security and scalability…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | BOOMIboomi.com HQ: Conshohocken, PA, United StatesReported employees: 1,001-5,000 | Conshohocken, PA, United States | 1,001-5,000 | Exact match | 2,725 contacts → |
“Connect everything to achieve anything™ #TeamBoomi” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Technology Integration Grouptig.com HQ: San Diego, GA, United StatesReported employees: 201-500 | San Diego, GA, United States | 201-500 | Exact match | 480 contacts → |
“Our Mission: TIG will earn its place as a trusted partner to our clients, providing only the highest level of service, value and advanced technology to power their strategic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Object Computing, INCobjectcomputing.com HQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 448 contacts → |
“We engineer the systems that power your business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Softweb Solutions Inc.softwebsolutions.com HQ: Plano, TX, United StatesReported employees: 501-1,000 | Plano, TX, United States | 501-1,000 | Exact match | 432 contacts → |
“When we look at the way enterprises operate today, we see a fundamental challenge.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Groundswellgswell.com HQ: Mclean, VA, United StatesReported employees: 201-500 | Mclean, VA, United States | 201-500 | Exact match | 372 contacts → |
“Groundswell is a specialized, highly agile systems integrator delivering advanced technology solutions as a trusted mission partner to federal agencies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bailiwick, An Eplus Technology, Inc. Companybailiwick.com HQ: Chaska, MN, United StatesReported employees: 201-500 | Chaska, MN, United States | 201-500 | Exact match | 345 contacts → |
“As a partner to some of the world’s largest companies, Bailiwick provides professionally managed technology integration and IT expertise for complex, large-scale IT initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sira Consulting, An INC 5000 Companysiraconsultinginc.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 336 contacts → |
“SiRA Consulting is a Certified MBE consulting company that was founded in 2012.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Blackstone EITblackstoneeit.com HQ: Seattle, WA, United StatesReported employees: 1,001-5,000 | Seattle, WA, United States | 1,001-5,000 | Exact match | 303 contacts → |
“Blackstone eIT is a leading System Integrator (SI) and Independent Software Vendor (ISV), globally dedicated to engineering transformative enterprise solutions and intelligent…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Infomericainfomericainc.com HQ: Cary, NC, United StatesReported employees: 1,001-5,000 | Cary, NC, United States | 1,001-5,000 | Exact match | 283 contacts → |
“Infomerica is a leading provider of digital transformation and cloud solutions that enable enterprises to achieve seamless customer experiences, enhanced business efficiency, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Fortitude Systemsfortitudesys.com HQ: Falls Church, VA, United StatesReported employees: 501-1,000 | Falls Church, VA, United States | 501-1,000 | Exact match | 230 contacts → |
“Fortitude Systems provides your business with the horsepower to get the job done to drive your IT process faster and more efficiently.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Infobahn Softworld INCinfobahnsw.com HQ: San Jose, IL, United StatesReported employees: 1,001-5,000 | San Jose, IL, United States | 1,001-5,000 | Exact match | 226 contacts → |
“Infobahn specializes in full-lifecycle project and consulting efforts conducted in strategic partnership with some of the world's most prominent companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Bart & Associates, INCbna-inc.com HQ: Mclean, AL, United StatesReported employees: 1,001-5,000 | Mclean, AL, United States | 1,001-5,000 | Exact match | 221 contacts → |
“Headquartered in McLean, Va, B&A is a leading information technology systems integrator providing solutions through the following service offerings: Modernization &…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Mi-Casemi-case.com HQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 218 contacts → |
“With over 20 years of experience in bespoke digital transformation at both the public and private level, Mi-Case is known as much for our white-glove approach to client support as…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Krasan Consulting Serviceskrasanconsulting.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 216 contacts → |
“Krasan Consulting Services is a Chicago-based boutique management consulting and technology solutions integrator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Astadiaastadia.com HQ: St. Louis, MO, United StatesReported employees: 201-500 | St. Louis, MO, United States | 201-500 | Exact match | 208 contacts → |
“Astadia is the industry leader for mainframe migrations and modernizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Vae, INCvaeit.com HQ: Springfield, VA, United StatesReported employees: 201-500 | Springfield, VA, United States | 201-500 | Exact match | 183 contacts → |
“At VAE, Inc, we build, secure and support large-scale enterprise IT infrastructures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Invasystems INCinvasystems.com HQ: Sugar Land, TX, United StatesReported employees: 201-500 | Sugar Land, TX, United States | 201-500 | Exact match | 179 contacts → |
“Invasystems, Inc, is a global enterprise solution provider and systems Integrator, helping customers transform to an Intelligent enterprise.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Strategic Business Systems SBSsbsplanet.com HQ: Chantilly, FL, United StatesReported employees: 201-500 | Chantilly, FL, United States | 201-500 | Exact match | 175 contacts → |
“Strategic Business Systems, Inc.(SBS) is an Information Technology (IT) Services Firm headquartered in the Washington, DC metropolitan area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | WEI Worldcom Exchange, INCwei.com HQ: Salem, NH, United StatesReported employees: 51-200 | Salem, NH, United States | 51-200 | Exact match | 172 contacts → |
“WEI is a premier IT solutions provider focused on building and extending quality relationships with clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | CI Globalciglobaltech.com HQ: Colonia, NJ, United StatesReported employees: 51-200 | Colonia, NJ, United States | 51-200 | Exact match | 169 contacts → |
“CI Global has been in the ERP ecosystem since 1998.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Sigmasoftsigmasoft.ai HQ: Santa Clara, CA, United StatesReported employees: 201-500 | Santa Clara, CA, United States | 201-500 | Exact match | 160 contacts → |
“Unleash your AI Transformation with Sigmasoft.AI.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Alliance Technology Groupalliance-it.com HQ: Hanover, PA, United StatesReported employees: 51-200 | Hanover, PA, United States | 51-200 | Exact match | 159 contacts → |
“Alliance Technology Group is a North American Systems Integrator & IT Solutions and Services company.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Coolsoft LLCcoolsofttech.com HQ: Louisville, KY, United StatesReported employees: 201-500 | Louisville, KY, United States | 201-500 | Exact match | 150 contacts → |
“Coolsoft LLC is a Certified Minority Business Enterprise (MBE), focused on delivering smart, next-generation business solutions that help enterprises across the world overcome…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | IQZ Systemsiqzsystems.com HQ: Atlanta, GA, United StatesReported employees: 51-200 | Atlanta, GA, United States | 51-200 | Exact match | 139 contacts → |
“IQZ Systems is a global strategic technology and solutions integration firm headquartered in Atlanta.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 726 company matches
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Legacy system integration services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
724 records in the displayed employee bands.
2 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 726 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 ↗
Questions about this company list
What does Exact match mean for legacy system integration services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many legacy system integration services did RevenueBase find based in the United States?
The saved snapshot records 726 matching company records, 104,764 tracked contacts and 32,596 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
Legacy system integration services by geography
- Legacy system integration services based in Melbourne, Australia
- Legacy system integration services based in Sao Paulo, Brazil
- Legacy system integration services based in Bangalore, India
- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom
- Legacy system integration services based in Argentina
- Legacy system integration services based in Australia
- Legacy system integration services based in Belgium
- Legacy system integration services based in Brazil
- Legacy system integration services based in Canada
- Legacy system integration services based in Chile
Cite this list
RevenueBase Data Team. Top 25 legacy system integration services based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/legacy-system-integration-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Legacy system integration services based in Hyderabad, India
- Legacy system integration services based in Dubai, United Arab Emirates
- Legacy system integration services based in London, United Kingdom