Technology consulting company providing software and systems engineering services to government agencies and businesses with application modernization expertise.
Top Rated15+ YearsMid-Size
App Modernization & Legacy MigrationTop 10 Elite
The very best • View detailed Top 10
Agencies 11–25
Strong contenders • View detailed Top 25
#11
#12
#13
#14
#15
#16
#17
#18
#19
#20
#21
#22
#23
#24
#25
ScienceSoft
Texas
Slalom
Washington
Trianz
California
WinWire Technologies
California
Improving
Texas
Luxoft
New York
Cloudticity
Texas
Heirloom Computing
California
Maxima Consulting
Illinois
Simform
Florida
TSRI
Washington
Astadia
Arizona
Damco Solutions
New Jersey
Protiviti
Illinois
CI&T
Texas
Agencies 26–50
Quality agencies for deeper exploration
Leading mobile app development company with 1200+ professionals delivering digital transformation for Fortune 500 companies globally.
Top Rated10+ YearsEnterprise
Mobile App DevelopmentMVP Development
Full-cycle software development company offering AI-enhanced legacy application modernization with 30% time savings through AI Solution Accelerator.
Top Rated10+ YearsMid-Size
App Modernization & Legacy Migration
Modernizing businesses through AI, data, and innovative software solutions.
Top Rated15+ YearsMid-Size
Product Engineering (SaaS)AI/ML Development
Massive IT services provider with 3,000+ professionals and 93% client return rate delivering end-to-end AI with PhD-level data scientists.
Top Rated15+ YearsEnterprise
AI/ML DevelopmentWeb Development
Microsoft Gold Partner specializing in legacy system modernization for Visual Basic, Visual FoxPro, .NET Framework, and MS Access applications.
Top Rated10+ YearsSmall Team
App Modernization & Legacy Migration
Software development company providing legacy modernization and migration services with phased approach minimizing business disruption.
Top Rated15+ YearsMid-Size
App Modernization & Legacy Migration
Full spectrum software development and IT outsourcing for healthcare, finance, and logistics with long-term partnership focus.
Top Rated15+ YearsEnterprise
Custom Software DevelopmentCloud Migration & Modernization
Leading IT solutions provider specializing in digital transformation, custom software development, and enterprise IT consulting since 1997.
Top Rated15+ YearsMid-Size
AI/ML DevelopmentApp Modernization & Legacy Migration
International software company with 6000+ engineers providing legacy application modernization with meticulous talent curation and 100+ specialized teams.
Top Rated15+ YearsEnterprise
App Modernization & Legacy Migration
Microsoft Gold Partner providing enterprise application modernization with focus on Azure, containers, DevOps, and cloud connectivity.
Top Rated15+ YearsMid-Size
App Modernization & Legacy Migration
Software modernization company providing legacy system transformation with focus on agile methodologies and proactive, scalable solutions.
Top Rated15+ YearsMid-Size
App Modernization & Legacy Migration
IT services company providing legacy application migration services with 700+ certified integration architects for complex digital landscape transformation.
Top Rated15+ YearsEnterprise
App Modernization & Legacy Migration
Custom software development agency providing legacy application modernization with focus on cloud-native transformation and cutting-edge technology integration.
Top Rated15+ YearsSmall Team
App Modernization & Legacy Migration
Cloud migration and modernization platform company providing unified workload mobility across AWS, Azure, Google Cloud, and hybrid environments.
Top Rated15+ YearsMid-Size
App Modernization & Legacy Migration
Cloud consulting and migration services provider with presence across 15+ US states offering legacy application modernization and iPaaS solutions.
Top Rated15+ YearsLarge Team
App Modernization & Legacy Migration
IT services company providing cloud migration and platform modernization with expertise in legacy application transformation and data center transitions.
Top Rated15+ YearsEnterprise
App Modernization & Legacy Migration
IT solutions provider offering cloud migration services with structured approaches for full-stack migration including applications, infrastructure, and DevOps.
Top Rated15+ YearsEnterprise
App Modernization & Legacy Migration
Software development company providing legacy modernization with focus on cloud migration, code refactoring, and application re-engineering for long-term partnerships.
Top Rated15+ YearsMid-Size
App Modernization & Legacy Migration
Software development company providing custom software development and enterprise app modernization with AI capabilities since 2009.
Top Rated15+ YearsLarge Team
App Modernization & Legacy Migration
Infrastructure and managed services provider offering DevOps consulting to accelerate software delivery and optimize cloud operations.
Top Rated15+ YearsEnterprise
DevOps & CI/CDAI/ML Development
IT consulting firm specializing in application modernization helping businesses transition from legacy systems to modern, cloud-based solutions.
Rising Star15+ YearsSmall Team
App Modernization & Legacy Migration
IT services company providing mainframe modernization solutions with expertise in cloud integration, business intelligence, and hybrid cloud strategies.
Rising Star15+ YearsMid-Size
App Modernization & Legacy Migration
IT solutions company providing cloud migration and application modernization services across Virginia, Texas, California, and New York locations.
Rising Star15+ YearsMid-Size
App Modernization & Legacy Migration
IT services company providing legacy application modernization with expertise in data migration, cloud solutions, and process automation.
Rising Star15+ YearsMid-Size
App Modernization & Legacy MigrationComplete Top 50 App Modernization & Legacy Migration Agencies
Full numbered list of all 50 agencies
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Complete Top 50 App Modernization & Legacy Migration Agencies
Full numbered list of all 50 agencies
- 1.Accenture — New Jersey
- 2.Cognizant — New Jersey
- 3.DXC Technology — Virginia
- 4.Hexaware — Georgia
- 5.IBM Consulting — New York
- 6.Itransition — Colorado
- 7.Kyndryl — New York
- 8.Mphasis — New York
- 9.NTT DATA — Texas
- 10.PwC — New York
- 11.ScienceSoft — Texas
- 12.Slalom — Washington
- 13.Trianz — California
- 14.WinWire Technologies — California
- 15.Improving — Texas
- 16.Luxoft — New York
- 17.Cloudticity — Texas
- 18.Heirloom Computing — California
- 19.Maxima Consulting — Illinois
- 20.Simform — Florida
- 21.TSRI — Washington
- 22.Astadia — Arizona
- 23.Damco Solutions — New Jersey
- 24.Protiviti — Illinois
- 25.CI&T — Texas
- 26.Applied Information Sciences (AIS) — Virginia
- 27.Appinventiv — New York
- 28.Devox Software — New York
- 29.Door3 — New York
- 30.Innowise — Georgia
- 31.ModLogix — Texas
- 32.AllianceTek — Pennsylvania
- 33.Andersen — New York
- 34.Charter Global — Georgia
- 35.Euvic — New Jersey
- 36.Imaginet — Texas
- 37.Tech.us — Connecticut
- 38.The Intech Group — New York
- 39.The Provato Group — Illinois
- 40.RiverMeadow — California
- 41.Compunnel — New Jersey
- 42.Innova Solutions — Georgia
- 43.Presidio — New York
- 44.SaM Solutions — South Carolina
- 45.Sparq — Georgia
- 46.TierPoint — Missouri
- 47.Techminds Group — New Jersey
- 48.TAFF Inc — Texas
- 49.USM Business Systems — Virginia
- 50.ePathUSA — Virginia
Trusted Rankings
Every agency on this list has been reviewed by our editorial team. Rankings are based on our transparent methodology which evaluates credibility, outcomes, and reputation.
No paid rankingsVerified credentialsUpdated regularly
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