Large IT staffing firm providing technology professionals for contract, contract-to-hire, and permanent positions across multiple industries.
Top RatedGoogle PartnerAWS Partner+3 more
Staff Augmentation / Dedicated TeamsCustom Software DevelopmentTop 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
Azumo
California
Intellectsoft
California
Appinventiv
New York
Capital Numbers
New York
Gearheart
California
Itexus
Colorado
Tallium
Florida
CodeBright
California
HTDHealth
New York
IronGlove Studio
Oregon
10Pearls
Virginia
Honeycomb Software
Texas
Atomic Object
Michigan
NTT DATA
Texas
Ksolves
Wyoming
Agencies 26–50
Quality agencies for deeper exploration
Software development firm with US clients like Mutual of Omaha building MVPs with blockchain and Web3 capabilities.
Top Rated10+ YearsMid-Size
MVP DevelopmentCustom Software Development
Full-cycle MVP development company specializing in healthcare and real estate solutions with rapid prototyping capabilities.
Top Rated15+ YearsMid-Size
MVP DevelopmentCustom Software Development
Technology consulting company specializing in legacy application modernization with expertise in AWS, Azure, and GCP cloud migrations and proprietary AI-powered Code Explorer tool.
Top RatedMicrosoft Partner15+ Years+1 more
App Modernization & Legacy MigrationCustom Software Development
Command Your Future with Bespoke Digital Experiences
Top Rated15+ YearsMid-Size
Product Engineering (SaaS)AI/ML Development
IT services company delivering DevOps and SRE solutions for enterprise digital transformation.
Top Rated15+ YearsEnterprise
SRE ServicesCustom Software Development
Custom software and IT talent solutions with 20 years excellence, 750+ projects, ISO 27001 certified, Microsoft Gold Partner.
Top RatedAWS PartnerMicrosoft Partner+2 more
Custom Software Development
Award-winning MVP development company featured on Clutch and GoodFirms delivering scalable startup solutions.
Top Rated5+ YearsMid-Size
Custom Software DevelopmentAI Chatbot Development
Full-cycle development focused on Angular, Node.js, and .NET with scalable enterprise applications and clean code architecture.
Top Rated10+ YearsMid-Size
Custom Software Development
Visionet is a leading global IT services and digital transformation company that delivers enterprise-grade solutions in cloud, data, AI, managed services, and CRM technologies including Salesforce.
Top RatedGoogle PartnerAWS Partner+4 more
Salesforce Consulting & DevelopmentCustom Software Development
Microsoft Solutions Partner specializing in application modernization, cloud migration, and AI/ML solutions with deep expertise in Azure and OpenAI technologies.
Top RatedGoogle PartnerAWS Partner+3 more
App Modernization & Legacy MigrationCustom Software Development
IT services company providing legacy system modernization and transformation with cloud migration and digital enablement expertise.
Top RatedGoogle PartnerAWS Partner+3 more
Legacy ModernizationCustom Software Development
Global MVP development leader with 15+ years experience, ISO 27001 certification, and CMMI Level 3 credentials.
Top RatedGoogle PartnerAWS Partner+3 more
MVP DevelopmentCustom Software Development
Custom software development focused on complex systems with transparency in time, budget, and work progress visibility.
Rising Star15+ YearsSmall Team
Custom Software Development
Mobile app development experts creating innovative iOS and Android applications with focus on user experience and scalability.
Rising Star15+ YearsMid-Size
Custom Software Development
Global software development with 250+ engineers, ISO certified, trusted by Visa, Epson, and IBM for 400+ completed projects.
Rising Star10+ YearsMid-Size
Custom Software DevelopmentDevOps & CI/CD
US-based custom software development company building 300+ products for startups with AI, mobile, web, and SaaS expertise.
Rising Star10+ YearsLarge Team
Custom Software Development
Inc 5000 MVP development company in DMV area specializing in fintech, healthcare, and SaaS solutions.
Rising Star15+ YearsSmall Team
MVP DevelopmentCustom Software Development
Software development and QA firm providing automated testing solutions for desktop, mobile, web, and API-based systems worldwide.
Rising Star15+ YearsMid-Size
Custom Software Development
Global IT services company providing AI-powered legacy modernization services with proprietary RapidX, Amaze, and Tensai platforms for enterprise transformation.
Rising Star15+ YearsEnterprise
App Modernization & Legacy MigrationAI/ML Development
End-to-end digital product development agency focused on emerging technologies with 500+ web projects and 120+ native mobile apps launched.
Rising Star15+ YearsMid-Size
Mobile App DevelopmentCustom Software Development
National custom software development and IT staffing with 26+ years delivering web, mobile apps, AI/ML, and data analytics.
Rising Star15+ YearsMid-Size
Custom Software DevelopmentStaff Augmentation / Dedicated Teams
Global software development company with US headquarters in Delaware delivering custom mobile solutions for enterprises since 2003.
Rising Star15+ YearsLarge Team
Mobile App DevelopmentCustom Software Development
Premier custom software with AI, machine learning, and cloud-native architectures for healthcare, fintech, and e-commerce.
Rising Star10+ YearsMid-Size
Custom Software Development
LaunchPad Lab is a US-based UI/UX design agency focused on product design and UX/UI for custom software—from research and wireframes to polished UI and design s
Rising StarSalesforce Partner10+ Years+1 more
UI/UX DesignCustom Software DevelopmentComplete Top 50 Custom Software Development Agencies
Full numbered list of all 50 agencies
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Complete Top 50 Custom Software Development Agencies
Full numbered list of all 50 agencies
- 1.ELEKS — Illinois
- 2.EPAM Systems — Pennsylvania
- 3.Simform — Florida
- 4.Stateside Agency — California
- 5.ScienceSoft — Texas
- 6.Andersen — New York
- 7.BairesDev — California
- 8.Agency Partner Interactive — Texas
- 9.Iron Forge Development — Georgia
- 10.SimbirSoft — Massachusetts
- 11.Azumo — California
- 12.Intellectsoft — California
- 13.Appinventiv — New York
- 14.Capital Numbers — New York
- 15.Gearheart — California
- 16.Itexus — Colorado
- 17.Tallium — Florida
- 18.CodeBright — California
- 19.HTDHealth — New York
- 20.IronGlove Studio — Oregon
- 21.10Pearls — Virginia
- 22.Honeycomb Software — Texas
- 23.Atomic Object — Michigan
- 24.NTT DATA — Texas
- 25.Ksolves — Wyoming
- 26.Apex Systems — Virginia
- 27.Cheesecake Labs — California
- 28.Glorium Technologies — New Jersey
- 29.Improving — Texas
- 30.Praxent — Texas
- 31.Rishabh Software — Georgia
- 32.SCALO — Illinois
- 33.Tekrevol — Texas
- 34.Valor Software — Colorado
- 35.Visionet Systems — New Jersey
- 36.WinWire Technologies — California
- 37.XTGlobal — Texas
- 38.eSparkBiz — California
- 39.Chudovo — Massachusetts
- 40.Clearbridge Technology — Massachusetts
- 41.Computools — New York
- 42.LITSLINK — California
- 43.Maxiom Technology — Maryland
- 44.Belitsoft — Florida
- 45.Hexaware — Georgia
- 46.Dom & Tom — New York
- 47.SOLTECH — Georgia
- 48.Fingent — New York
- 49.Lasting Dynamics — North Carolina
- 50.LaunchPad Lab — Illinois
Top 50 Custom Software Development Agencies — FAQ
Common questions about the best custom software development agencies.
Who is the #1 custom software development agency in the USA in 2026?
As of 2026, the top-ranked custom software development agency in the USA on AgencyCluster is ELEKS, with an AgencyCluster Score of 100/100. Rankings are based on verified evidence across credibility, proof of work, reputation, category specialization, delivery maturity, and freshness. Rankings are updated periodically as new evidence becomes available.
How were the top 50 custom software development agencies in the USA selected?
This list features 50 agencies selected from AgencyCluster's curated directory. Each agency was evaluated using the AgencyCluster Score (0–100), with particular weight on demonstrated expertise in custom software development. Only agencies with verified credentials are eligible, and rankings cannot be purchased. The agencies on this list average 19+ years of experience. For full methodology details, see our How We Rank page.
What should I look for when choosing a custom software development agency from this list?
Prioritize agencies that lead with a discovery phase before quoting. Ask how they handle requirements changes mid-project. Request references from clients with similar complexity (not just similar industry). Check if they provide architecture documentation and whether they've built systems that have scaled in production.
How much do the top custom software development agencies typically charge?
Custom enterprise software projects typically range from $100K–$1M+. Smaller internal tools or integrations may start at $50K. Post-launch support and iteration usually costs $10K–$40K/month.
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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