Company lists · Data refreshed November 2026

Top 25 AI legacy system modernization companies worldwide

RevenueBase identified 2,141 company matches for AI legacy system modernization companies worldwide as of November 2026 and tracks 160,159 professional contacts across them, including 56,463 with verified work emails. The United States is the largest market and Bangalore the largest hub.

This list covers company matches for AI legacy system modernization companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for AI legacy system modernization companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
2,141Companies
160,159Contacts tracked
56,463Verified emails
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The 25 largest AI legacy system modernization companies worldwide

Ranked by team size
Top 25 of 2,141 company matches for AI legacy system modernization companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPune, IndiaHQ recorded Nov 6, 202610001+29,855 contacts →

Exact match

“We are an AI-led, platform-driven Digital Engineering and Enterprise Modernization partner, combining deep technical expertise and industry experience to help our clients…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchBoston, MA, United StatesHQ recorded Nov 6, 202610001+20,551 contacts →

Exact match

“Publicis Sapient, the global technology hub of Publicis Groupe, provides enterprise AI platforms and services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchStuttgart, GermanyHQ recorded Nov 6, 202610001+10,648 contacts →

Exact match

“GFT Technologies is an AI-centric global digital transformation company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBangalore, IndiaHQ recorded Nov 6, 20265,001-10,0007,815 contacts →

Exact match

“Sonata Software Limited is a leading Modernization engineering company, headquartered in Bangalore.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSouthfield, CA, United StatesHQ recorded Nov 6, 20265,001-10,0007,248 contacts →

Exact match

“Altimetrik is an AI-native engineering company that builds systems to power the modern enterprise.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchWaltham, United StatesHQ recorded Nov 6, 20265,001-10,0006,684 contacts →

Exact match

“Pega provides the leading AI-powered platform for enterprise transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 20265,001-10,0004,579 contacts →

Exact match

“We are AI/R.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSanta Clara, CA, United StatesHQ recorded Nov 6, 20261,001-5,0003,019 contacts →

Exact match

“Tavant is a leading platform-powered AI Transformation specialist helping enterprises unlock the power of AI and accelerate transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBridgeville, United StatesHQ recorded Nov 6, 20261,001-5,0002,957 contacts →

Exact match

“Accion Labs is an - headquartered in Pittsburgh.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHerndon, VA, United StatesHQ recorded Nov 6, 20261,001-5,0002,385 contacts →

Exact match

“Trianz is a "transformation services as a software" company - helping enterprises accelerate cloud adoption and AI transformation through Concierto, our unified, AI-first platform…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchBoston, United StatesHQ recorded Nov 6, 20261,001-5,0002,153 contacts →

Exact match

“OutSystems is your agentic systems platform, unified, agile, and enterprise-proven.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchChicago, United StatesHQ recorded Nov 6, 20261,001-5,0001,982 contacts →

Exact match

“Everforth Quinnox is an AI-first Digital Always organization orchestrating value for forward-looking businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPlano, United StatesHQ recorded Nov 6, 20261,001-5,0001,673 contacts →

Exact match

“Improving is a leading IT professional services firm committed to helping companies achieve lasting success through modern technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchHouston, United StatesHQ recorded Nov 6, 20261,001-5,0001,608 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 · Nov 6, 2026 · View company records in RevenueBase
15Exact matchRockville, United StatesHQ recorded Nov 6, 20261,001-5,0001,593 contacts →

Exact match

“Hughes Systique Corporation (HSC) is a global digital engineering and transformation partner enabling enterprises to modernize, innovate, and grow through its AI-First approach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchChennai, CA, IndiaHQ recorded Nov 6, 20261,001-5,0001,388 contacts →

Exact match

“Kumaran Systems: Engineering Future-Ready Transformations Since 1992, Kumaran Systems has been helping enterprises bridge the past and the future, reimagining legacy systems and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchNaperville, United StatesHQ recorded Nov 6, 20261,001-5,0001,373 contacts →

Exact match

“Royal Cyber is a trusted global IT consulting & digital transformation partner, empowering enterprises for over two decades to evolve with agility, security, and innovation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchDallas, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,063 contacts →

Exact match

“IBM i is evolving.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchKsolves It Usa Inc, WY, United StatesHQ recorded Nov 6, 2026501-1,000832 contacts →

Exact match

“Ksolves India Limited is an AI-first software development company listed on the National Stock Exchange (NSE) and Bombay Stock Exchange (BSE) in India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchBrasilia, BrazilHQ recorded Nov 6, 20261,001-5,000776 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAhmedabad, IndiaHQ recorded Nov 6, 2026501-1,000759 contacts →

Exact match

“A global software engineering company with 26+ years of experience helping enterprises build, modernize, and scale complex digital systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBrentwood, TN, United StatesHQ recorded Nov 6, 2026501-1,000739 contacts →

Exact match

“FullStack is a leading software engineering and AI solutions company helping organizations modernize, innovate, and scale through intelligent technology and world-class AI-ready…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSan Jose, NJ, United StatesHQ recorded Nov 6, 2026501-1,000682 contacts →

Exact match

“Relevance Lab is a next-generation technology services company -.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKolkata, CA, IndiaHQ recorded Nov 6, 2026501-1,000666 contacts →

Exact match

“Capital Numbers is an AI-accelerated digital engineering company helping mid-market and enterprise organizations build software, apply AI, modernize technology platforms, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchSacramento, CA, United StatesHQ recorded Nov 6, 2026201-500644 contacts →

Exact match

“OptiSol Business Solutions is a global IT services firm with over 15 years of experience in delivering innovative digital solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,141 AI legacy system modernization companies worldwide

See the full list, filter by size, metro and specialty, and access 56,463 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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AI legacy system modernization companies worldwide at a glance

As of Nov 6, 2026
35.3%Verified-email coverage
74.8Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Bangalore
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,050
11-50
656
51-200
279
201-500
78
501-1,000
31
1,001-5,000
25
5,001-10,000
9
10001+
6

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 AI legacy system modernization companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “AI legacy system modernization companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 56,463 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.

AI legacy system modernization companies by location

13 lists · largest first

Every AI legacy system modernization companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “AI legacy system modernization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many AI legacy system modernization companies are there worldwide?

RevenueBase identified 2,141 company matches for AI legacy system modernization companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Persistent Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most AI legacy system modernization companies?

The United States leads with 555 companies, followed by India (343) and the United Kingdom (97). Every AI legacy system modernization companies list by country and city is linked on this page.

Which city has the most AI legacy system modernization companies?

Bangalore leads with 46 company records, followed by London (43) and Hyderabad (37).

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 56,463 professional contacts with verified work emails tracked across these 2,141 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.

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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.