10 Top Application Modernization Companies in Michigan (2025)

Code District has positioned itself as one of the most agile and business-aligned application modernization companies in Michigan.

The firm goes beyond legacy migration to offer a complete transformation framework that includes cloud readiness, modular architecture design, DevOps integration, and UI/UX enhancement.

Their solutions are characterized by adaptability, performance, and business alignment.

What distinguishes Code District is its strong focus on user experience and its ability to build future-proof systems that scale with growth.

Their cross-functional teams emphasize stakeholder collaboration and agile methodology, ensuring modernization projects are aligned with operational goals from day one.

They also specialize in workflow automation and API integration, enabling organizations to streamline complex operations and improve interoperability.

Location: Detroit, Michigan, USA

Key Services: Application modernization, custom software development, cloud engineering, digital transformation consulting

Company Size: 51–200 employees

Website: https://www.codedistrict.com

Ann Arbor-based Menlo Innovations brings a user-centric and iterative mindset to software development and modernization.

Their philosophy of “high-tech anthropology” ensures that technical solutions are designed with the end user in mind, supported by extensive field research and testing.

Menlo helps businesses phase out outdated software by developing systems that are not only technically sound but also intuitive and well-aligned with user workflows.

Their emphasis on human-centered design, coupled with agile practices, makes them a reliable partner for organizations pursuing meaningful digital change.

Clients appreciate Menlo’s transparent communication and deep engagement throughout the project lifecycle.

Location: Ann Arbor, Michigan, USA

Key Services: Application modernization, UX design, agile development, custom software

Company Size: 50-100 employees

Website: https://menloinnovations.com

Atomic Object operates out of Grand Rapids and Ann Arbor, offering full-cycle custom software services.

The company’s modernization offerings include replatforming aging applications, redesigning legacy interfaces, and upgrading software architecture to modern frameworks like React, .NET Core, and AWS-based infrastructure.

Their strength lies in small, autonomous teams that deliver high-quality, test-driven code and transparent client engagement.

Atomic Object helps enterprises modernize with confidence, balancing immediate technology needs with long-term sustainability and maintainability.

Their portfolio includes modernization projects for industries such as education, automotive, and manufacturing.

Location: Grand Rapids and Ann Arbor, Michigan, USA

Key Services: Application modernization, software development, UI/UX design, DevOps

Company Size: 50-200 employees

Website: https://atomicobject.com

HTC Global Services is a multinational technology solutions provider headquartered in Troy, Michigan.

With deep expertise in legacy transformation, HTC supports enterprises in reengineering core applications to meet modern performance and security requirements.

Their modernization services encompass platform upgrades, microservices adoption, containerization, and cloud-native refactoring.

HTC’s industry experience spans banking, healthcare, manufacturing, and public sector domains. Their structured modernization frameworks enable rapid transformation with minimal business disruption.

HTC also integrates security compliance and performance optimization into every phase of the project.

Location: Troy, Michigan, USA

Key Services: Application modernization, enterprise software, cloud transformation, system integration

Company Size: 10,000+ employees

Website: https://www.htcinc.com

As part of the Rocket Companies group, Amrock combines domain-specific expertise with digital innovation.

Their modernization approach is closely tied to business outcomes, enabling faster processing, improved customer experiences, and enhanced security compliance in sectors such as mortgage processing and real estate transactions.

Amrock’s technical strategy includes decoupling monolithic systems into service-oriented architectures, adopting secure APIs, and deploying scalable cloud infrastructure.

Their internal teams are structured for agility and innovation, making it easier to adapt to emerging technologies and regulatory shifts.

Location: Detroit, Michigan, USA

Key Services: Application modernization, process automation, cloud architecture, enterprise IT solutions

Company Size: 1,000+ employees

Website: https://www.amrock.com

As one of the more prominent application modernization companies in Michigan, Nexient offers Silicon Valley-grade engineering with a Midwest delivery model.

The firm’s application modernization practice focuses on transforming legacy systems into cloud-native applications using modern tech stacks like Kubernetes, Spring Boot, and Azure or AWS.

Their agile product teams work hand-in-hand with clients to rapidly iterate on solutions that reduce operational risk and technical debt.

Nexient is particularly adept at serving retail, technology, and healthcare organizations, helping them navigate large-scale modernization projects while maintaining business continuity.

Location: Ann Arbor, Michigan, USA

Key Services: Application modernization, product engineering, DevOps, cloud-native development

Company Size: 500+ employees

Website: https://www.nexient.com

CQL is a Grand Rapids-based digital agency that supports enterprises in modernizing both frontend and backend systems.

With a strong foundation in eCommerce and enterprise applications, CQL offers services such as platform migration, UX overhaul, and cloud integration.

CQL’s approach is grounded in design thinking and agile delivery, making it well-suited to organizations that prioritize user engagement and operational alignment.

Their work spans retail, healthcare, and manufacturing, with a strong emphasis on improving digital experiences and enabling data-driven decisions.

Location: Grand Rapids, Michigan, USA

Key Services: Application modernization, UI/UX design, cloud development, eCommerce platforms

Company Size: 50-100 employees

Website: https://www.cqlcorp.com

OST, headquartered in Grand Rapids, has built a strong reputation as one of the top application modernization companies in Michigan.

Their application modernization offerings address everything from mainframe migration to DevOps implementation and data platform modernization.

OST is known for aligning modernization projects with broader digital strategy goals, such as customer experience enhancement and operational intelligence.

Their team brings together specialists in architecture, development, and cloud infrastructure to deliver solutions that are technically resilient and business-relevant.

Location: Grand Rapids, Michigan, USA

Key Services: Application modernization, cloud transformation, DevOps, data analytics

Company Size: 200-500 employees

Website: https://www.ostusa.com

3Advance is a technology solutions firm specializing in custom software development and application modernization.

Based in Michigan, the company helps businesses navigate the complexities of modernizing their legacy systems by leveraging cutting-edge technologies such as cloud computing, machine learning, and agile development practices.

3Advance takes a strategic approach to application modernization, focusing on both technical excellence and user-centric design.

The firm’s expertise lies in its ability to reengineer outdated applications to be scalable, secure, and easily maintainable.

Their deep experience across industries such as finance, healthcare, and e-commerce positions them as a strong partner for organizations looking to streamline processes and improve operational efficiency.

By integrating modern software architectures with business operations, 3Advance delivers solutions that not only meet current demands but are also adaptable for future growth.

Location: Michigan, USA

Key Services: Application modernization, custom software development, cloud solutions, AI integration, UI/UX design

Company Size: 51-200 employees

Website: https://www.3advance.com

STRV is a leading software development company with a strong focus on mobile and web app development, including modernization services.

The firm works with enterprises to refactor and modernize legacy applications, transforming them into high-performance, scalable systems capable of meeting the needs of today’s digital economy.

STRV’s innovative approach to application modernization combines expert software engineering with a focus on seamless user experiences and intuitive designs.

STRV’s expertise spans various industries, including fintech, e-commerce, and entertainment, where they have successfully reengineered outdated platforms into modern, cloud-native solutions.

The company’s agile development process ensures that every modernization project is completed efficiently, minimizing downtime and maximizing value for clients.

STRV is recognized for its ability to create custom solutions that integrate modern technologies, such as microservices, AI, and blockchain, into legacy systems.

Location: Michigan, USA

Key Services: Application modernization, custom software development, mobile app development, cloud solutions, UX/UI design, blockchain

Company Size: 200+ employees

Website: https://www.strv.com

In an era where agility, innovation, and digital readiness are defining enterprise success, legacy systems can no longer be ignored.

Application modernization offers organizations a chance to break free from the constraints of outdated technology and embrace architectures that support scale, speed, and intelligence.

The application modernization companies in Michigan featured in this list are at the forefront of this shift.

With a mix of boutique consultancies and enterprise-level service providers, Michigan’s tech ecosystem offers diverse options for businesses seeking to evolve their technology stack.

These companies are helping enterprises bridge the gap between legacy and modern systems, ensuring continuity, improving performance, and enabling new capabilities.

Among them, Code District stands out for its comprehensive and client-focused approach.

By combining modern software engineering principles with a deep understanding of business strategy, Code District offers Michigan enterprises a reliable path to successful modernization.

As organizations move forward in their digital transformation journeys, choosing the right partner will be key—and Code District offers the tools, talent, and vision to lead the way.