Company lists · Data refreshed September 2026

Top 25 Legacy system modernization consultants based in the United States

Name: Legacy system modernization consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 6,336 companies tracked

RevenueBase identified 6,336 company matches for legacy system modernization consultants associated with the United States as of September 2026 and tracks 225,164 professional contacts across them, including 73,452 with verified work emails. New York is the largest hub.

This list covers company matches for legacy system modernization consultants 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 September 20, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

6,336Companies

225,164Contacts tracked

73,452Verified emails

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The 25 largest legacy system modernization consultants based in the United States

Ranked by team size

Top 25 of 6,336 company matches for legacy system modernization consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	DXC Technology	Exact match	Ashburn, VA, United StatesHQ recorded Sep 20, 2026	10001+	82,768 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 · Sep 20, 2026 · View company records in RevenueBase
2	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 20, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	SHI International Corp	Exact match	Somerset, NJ, United StatesHQ recorded Sep 20, 2026	5,001-10,000	6,734 contacts →
	Exact match “Think of SHI as your personal technology concierge.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Ensono	Exact match	Downers Grove, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	3,247 contacts →
	Exact match “Ensono is an expert technology adviser and managed service provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	AHEAD	Exact match	Chicago, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,989 contacts →
	Exact match “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 20, 2026	1,001-5,000	2,619 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Jade Global	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,872 contacts →
	Exact match “Jade Global is a premier consulting, integration, and managed services partner helping enterprises modernize, innovate, and scale.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Quadrant Technologies	Exact match	Redmond, WA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,664 contacts →
	Exact match “Quadrant Technologies: Your Go-to IT Services Partner for a Digital Future For over a decade, Quadrant Technologies has established itself as a trailblazer in the IT services…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Improving	Exact match	Plano, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,578 contacts →
	Exact match “Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Searce INC	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,511 contacts →
	Exact match “Searce is an AI-native, engineering-led modern tech consultancy that empowers clients to futurify by delivering real business outcomes.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	CEI	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 20, 2026	501-1,000	1,391 contacts →
	Exact match “In today’s technology-driven world, the mandate of transformation represents both challenges and opportunities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Royal Cyber INC	Exact match	Naperville, IL, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,325 contacts →
	Exact match “Royal Cyber is a trusted global IT consulting & digital transformation partner, empowering enterprises for over two decades to evolve with agility, security, and innovation.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	V-Soft Consulting Group, INC	Exact match	Louisville, KY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,221 contacts →
	Exact match “V-Soft Consulting, an innovative corporation specializing in Information Technology consulting; including staffing, digital, and infrastructure solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	programmers.io	Exact match	Dallas, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,056 contacts →
	Exact match “IBM i is evolving.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Captech	Exact match	Richmond, VA, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,005 contacts →
	Exact match “CapTech is a technology consulting firm focused on defining and delivering what’s next for organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Emergys	Exact match	Morrisville, NC, United StatesHQ recorded Sep 20, 2026	1,001-5,000	981 contacts →
	Exact match “Accelerate Digital Transformation At Emergys, we empower businesses to align their IT strategies with long-term objectives-driving innovation, efficiency, and growth.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Xtglobal, INC	Exact match	Plano, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	841 contacts →
	Exact match “Founded in 1998, XTGlobal, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Ubeo Business Services	Exact match	Austin, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	743 contacts →
	Exact match “UBEO Business Services is an end-to-end provider of business technology solutions and services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	System Soft Technologies	Exact match	Tampa, FL, United StatesHQ recorded Sep 20, 2026	501-1,000	732 contacts →
	Exact match “System Soft Group is an IT services and solutions company that helps organizations overcome limited managed IT capabilities and achieve key technology goals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Heartland Business Systems	Exact match	Little Chute, WI, United StatesHQ recorded Sep 20, 2026	501-1,000	693 contacts →
	Exact match “HBS is your full-service technology solutions partner.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	NET At Work	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	201-500	679 contacts →
	Exact match “At Net at Work, we help organizations unleash the power of their business performance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	The Select Group	Exact match	Raleigh, NC, United StatesHQ recorded Sep 20, 2026	1,001-5,000	651 contacts →
	Exact match “TSG is a technology consulting and services partner that helps organizations move faster, operate smarter, and extract greater value from technology investments in rapidly…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Ciber Global	Exact match	Troy, MI, United StatesHQ recorded Sep 20, 2026	5,001-10,000	646 contacts →
	Exact match “Ciber Global is now HTC Global Services with effect from November 30, 2021.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Abacus Technology Corporation	Exact match	Chevy Chase, MD, United StatesHQ recorded Sep 20, 2026	501-1,000	627 contacts →
	Exact match “Abacus Technology Corporation delivers leading edge, high quality assistance in response to complex technology challenges.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Tekskills INC	Exact match	Princeton, NJ, United StatesHQ recorded Sep 20, 2026	501-1,000	613 contacts →
	Exact match Recorded description not available. 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 modernization consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 6,336 legacy system modernization consultants based in the United States

See the full list, filter by size, metro and specialty, and access 73,452 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Legacy system modernization consultants based in the United States at a glance

As of Sep 20, 2026

32.6%Verified-email coverage

35.5Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,047

11-50

2,034

51-200

898

201-500

220

501-1,000

1,001-5,000

5,001-10,000

10001+

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 6,336 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 modernization consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. 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 73,452 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 modernization consultants by metro

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

How many legacy system modernization consultants are there based in the United States?

RevenueBase identified 6,336 company matches for legacy system modernization consultants associated with the United States 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?

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 modernization consultants?

New York leads with 189 company records, followed by Houston (146) and Atlanta (122).

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 73,452 professional contacts with verified work emails tracked across these 6,336 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.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.