This non-sponsored ranking of top legacy application modernization companies gathers 16 top vendors. The research was conducted by real experts in the field, not AI.
A QUICK SUMMARY – FOR THE BUSY ONES
TABLE OF CONTENTS
The companies above are sorted by their ability to make quick impact on the project.
Now, discover the details about each company. Information gathered here contains: services, skills, talents on board, portfolio, client testimonials, technology stack, industry expertise, company size, and price range.
Brainhub stands out as an outstanding provider of software development services, thanks to their impressive expertise in technology. Their primary focus is on offering services that accelerate digital growth and enhance team capabilities. Their have high expertise in enterprise app modernization and cloud consulting. They collaborate with a wide variety of companies, including enterprises, startups, scale-ups, and well-established firms.
LEGACY MODERNIZATION EXPERIENCE
Brainhub collaborated with one of the Big Four companies, and they developed and modernized 3 applications for creating tax reports and managing legal entities for them. The project involved dealing with high data security and isolation, migrating to modular monolith and cloud, and implementing multitenancy.
To ensure the creation of high-quality software, Brainhub adopts a methodology that emphasizes quick iteration and thorough testing. This approach enables them to reliably deliver substantial business advantages through their superior software offerings.
AWARDS
SERVICES
KEY CLIENTS
TECHNOLOGIES
JavaScript, .NET, TypeScript, Node.js, React.js, Electron.js, React Native
TALENTS ON BOARD
software engineers, QA engineers, software architects, DevOps engineers, business analysts, UX/UI designers
REVIEWS
4.9/5 stars on Clutch from 42 reviews
SKILLS
product scaling, software development, customized software, GraphQL, Kubernetes, AWS, Azure, GCP, DevOps, workshops, hybrid mobile app development, iOS application development, Android application development, PWAs, CI/CD, automated tests, BDD, TDD, backend engineering, API development, serverless architecture, testing, UX design, UI design, UX audit, UX workshops, product workshops, architecture development, API development, MVP development, prototyping, legacy architecture, legacy infrastructure, application modernization solutions
WHAT CUSTOMERS VALUE:
METHODOLOGY: Agile methodology
COMPANY SIZE: 100+
LOCATION: Poland
PRICE RANGE: $50 - $99 / hr
CULTURE & VALUES:
INDUSTRY EXPERIENCE:
<span class="colorbox1" fs-test-element="box1"><p>Contact Brainhub to consult your software development project</p></span>
CSHARK is a software development company that specializes in creating digital products that resonate with users. They offer a comprehensive range of services including end-to-end software development, product design, MVP development, and software development outsourcing. CSHARK is known for its expertise in FinTech software development and .NET development, showcasing their ability to deliver tailored solutions that help businesses and startups excel in the fast-paced digital world.
AWARDS
SERVICES
SKILLS
Software development, product design, MVP development, cloud infrastructure, user-centric design, data integrations, mobile apps, web apps, legacy architecture, legacy infrastructure
TECH STACK
.NET, C#, Go
PORTFOLIO
CULTURE
TEAM SIZE
250+
REVIEWS
Clutch Rank: 4.9/5 based on 19 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Poland
Other locations: UK
PRICE RANGE
$50 - $99 / hr
INDUSTRY EXPERTISE
DataArt is a global software engineering firm established in 1997, focusing on designing and engineering data-driven, cloud-native solutions to deliver immediate and enduring business value. They prioritize a people-first principle, with a world-class team committed to creating dynamic digital transformations. DataArt operates 20+ domain-specific Labs dedicated to research and development and strategic innovation, partnering with clients to ensure they remain at the forefront of technology.
AWARDS
SERVICES
SKILLS
Project management, software development, AI and Machine Learning, E-commerce solutions, Cloud migration and consulting, IoT solutions, data migration, User Experience design, User Interface design, data consulting
TECH STACK
C#, Java, JavaScript, Python, SQL, C++, PHP, Ruby, Node.js, React.js, Ruby on Rails, Vue.js
PORTFOLIO
CULTURE
TEAM SIZE
1,000 - 9,999 employees
REVIEWS
Clutch Rank: 4.9/5 from 26 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: USA
Other locations: UK, Germany
PRICE RANGE
$50 - $99 / hr
INDUSTRY EXPERTISE
Cleveroad is a custom app development company with a focus on creating tailored software solutions for businesses. They emphasize innovation, transparency, and guaranteed product delivery, covering the full cycle of web and mobile application development. With a strong commitment to their clients' technical success, Cleveroad offers a range of services including dedicated development teams, end-to-end software development, PoC/MVP development, and legacy software modernization.
SERVICES
SKILLS
native mobile and web development, microservices, cloud solutions, AI/data science, Machine Learning, industrial IoT, augmented reality, cross-platform solutions
TECH STACK
Node JS, Typescript, .NET, Python, Java, Ruby, React, Angular, Vue JS, Flutter, React Native, Kotlin, Swift
PORTFOLIO
CULTURE
TEAM SIZE
50+
REVIEWS
Clutch Rank: 4.9 out of 63 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Estonia
Other locations: USA (Claymont, DE), Norway (Oslo), Ukraine (Dnipro)
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
Diceus is a custom software development company that has been assisting enterprises in building software since 2011. They focus on delivering high-quality code and ensuring projects are delivered on scope by leveraging a proven development flow. Their services extend beyond just software engineering to include system integration, modernization, and optimization. With over 250 professionals on board, Diceus prides itself on teamwork and delivering value to businesses through certified developers, test engineers, and business analysts.
SERVICES
SKILLS
Mobile apps, enterprise solutions, software architecture design, legacy application modernization, system integration, data migration, web development, web apps, website, UI/UX design, Cloud, BI & Big Data, IT strategy, cybersecurity, penetration testing, AWS integration.
TECH STACK
.NET, Java, Python, Flutter, React Native, Kotlin, JavaScript, Vue.js, C#
PORTFOLIO
CULTURE
TEAM SIZE
250+ full-time tech professionals.
REVIEWS
Clutch Rank: 4.9/5 from 47 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarter: Poland
Other locations: Ukraine, Denmark, Austria
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
Taazaa is a custom software development company founded in 2007, focusing on reducing human suffering through innovative and progressive solutions. They serve a wide range of clients, from startups to SMBs and Fortune 500 companies, as a trusted technology partner. Taazaa emphasizes high-empathy design and an iterative approach to development, ensuring solutions that are secure, high-quality, and propel businesses forward. Their agile, low-friction development process is designed to reduce risk and deliver rapid, tightly integrated solutions to meet business needs.
SERVICES
SKILLS
cross-platform mobile apps, native mobile apps, Progressive Web Apps, Artificial Intelligence, Machine Learning, NLP, IoT, Cloud
TECH STACK
React Native, Node.js, .NET, MongoDB, Express.js, Swift, Objective-C, Java, Kotlin, Xamarin, Flutter, React, Angular, Vue
PORTFOLIO
CULTURE
TEAM SIZE
50+
REVIEWS
Clutch Rank: 5.0 average review rating from 27 reviews.
WHAT CLIENTS LOVE
LOCATION
Headquarters: USA
Other locations: India
PRICE RANGE
$50 - $99 / hr
INDUSTRY EXPERTISE
Software Mind is a global software house with R&D centers across Central Europe and South America. Established in 1999, they specialize in providing experienced software developers to assist partners in achieving their goals through digitalization, accelerating IT development processes, building new solutions from scratch, and creating remote delivery centers. Their approach is focused on leveraging technology to empower people, driving business growth and digital transformations.
SERVICES
SKILLS
Artificial Intelligence, mobile app development, enterprise application modernization, BI & Big Data
TECH STACK
.NET, C#, JavaScript, Angular, PHP, Go
PORTFOLIO
CULTURE
TEAM SIZE
1,000+
REVIEWS
Clutch Rank: 4.9 out of 5 from 40 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Poland
Other locations: Romania, Moldova, Argentina, Brazil, and Uruguay.
PRICE RANGE
$50 - $99 / hr
INDUSTRY EXPERTISE
Plavno is a premier software development company that specializes in leveraging AI technology to transform businesses. With a team of over 100 specialists, they have over 16 years of experience and have delivered more than 260 projects. Plavno offers a comprehensive range of services, from product management and analysis to design, development, testing, and ongoing support. They focus on creating software that enhances human potential, particularly in healthcare, ensuring technology empowers people in care delivery and improves patient experiences.
SERVICES
SKILLS
Project management, Agile methodology, A/B Testing, CAC, ROI, CLTV, CJM, Cohort, UX Design, DevOps, back-end development, front-end development, GraphQL, Next.js, Webpack, Docker, JQuery, CSS3, HTML5, WordPress, Symfony, legacy infrastructure, application modernization solutions
TECH STACK
TypeScript, React, Node.js, Express, Laravel, Golang, Python, Java, PHP
PORTFOLIO
CULTURE
TEAM SIZE
50 - 249 employees.
REVIEWS
Clutch Rank: 5.0 average review rating from 44 reviews.
WHAT CLIENTS LOVE
LOCATION
Headquarters: Poland
Other Locations: The Republic of Kazakhstan, London, United Kingdom
PRICE RANGE
$25 - $49 / hr.
INDUSTRY EXPERTISE
Innowise is an international full-cycle software development company established in 2007. With over 1400 IT professionals, they specialize in developing software for clients worldwide, boasting a portfolio of more than 850 projects. Their services range from software engineering & development to IT consulting & advisory, covering various industries and technological domains.
SERVICES
SKILLS
GCP, SAP, Salesforce, Odoo, DevOps, UX design, UI design, Quality Assurance, Cloud, mobile apps, web apps, business analysis, AWS, Azure
TECH STACK
React, Angular, Vue.js, JavaScript, Java, .NET, Python, PHP, Node.js, Flutter, React Native, Xamarin, .NET MAUI, Kotlin, Swift
PORTFOLIO
CULTURE
TEAM SIZE
1400+ IT professionals
REVIEWS
Clutch rank: 4.9/5 from 56 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Poland
Other locations: Belgium, Spain, Greece, Portugal
PRICE RANGE
$50 - $99 / hr, with project costs typically ranging from $10,000 to $49,000.
INDUSTRY EXPERTISE
GoodCore Software is a full-service software development company based in London, UK, with over 18 years of experience. They specialize in providing end-to-end bespoke software development support, from ideation to delivery, aiming to enhance business efficiency, disrupt markets, and drive end-user adoption. They also offer development team augmentation, digital transformation strategies, and software project takeover services, focusing on empowering companies with skilled engineering talent for executing digital transformation and product development strategies affordably and seamlessly.
SERVICES
SKILLS
Project management, UI/UX consulting, tech advisory, software development, web app development, mobile app development, web portal development, MVP development, desktop development, product development, support & maintenance, API development & system integration, QA & testing services, UI/UX design, iOS app development, Android app development, cross-platform apps, Microsoft Azure, Google Cloud Platform, legacy architecture
TECH STACK
Node.js, PHP, .NET, Java, React, Vue.js, Angular
PORTFOLIO
CULTURE
TEAM SIZE
50 - 249 employees
REVIEWS
Clutch Rank: 5.0 average review rating from 29 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: UK
Other Locations: Pakistan, Malaysia
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
Synapse India is a prominent IT outsourcing company based in India, established in 2000. It specializes in custom software development services, catering to a diverse clientele that includes startups, SMEs, and enterprise-level companies. With a large team of over 300 professionals and four state-of-the-art development centers in India and the USA, Synapse India has successfully delivered over 10,000 projects. The company is known for its expertise in e-commerce solutions and business applications.
SERVICES
SKILLS
MySQL, Laravel, Django, blockchain, IoT, cloud computing, Swift, Kotlin, React Native, Xamarin, Flutter, CSS3, HTML5, JavaScript, responsive design, Salesforce, Zoho, HubSpot, Microsoft Dynamics, WordPress, Drupal, Joomla, Magento, Unity, Unreal Engine, serverless architecture, Kubernetes, AWS Lambda, legacy infrastructure
TECH STACK
.NET, Java, PHP, Python, Ruby, ReactJS, AngularJS, NodeJS, Vue.js
PORTFOLIO
CULTURE
TEAM SIZE
250+
REVIEWS
Clutch Rank: 4.8/5 from 32 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Noida, India
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
Sonatafy Technology is a Nearshore Software Development company that specializes in providing tailored solutions by assembling specialized teams of engineers to meet clients' goals. They focus on delivering award-winning, customized software development services, emphasizing the importance of professional-level English proficiency, time zone alignment, and technical compatibility. The company caters to leading brands and innovative startups, offering a comprehensive range of services from full-stack development to QA and UI/UX design.
AWARDS
SERVICES
SKILLS
Software development, full stack development, back-end development, DevOps, database management, front-end development, mobile apps development, QA, UI/UX design, Azure, Kuberneter, MySQL, HTML, design, application modernization solutions
TECH STACK
Kotlin, .Net, Java, Golang, Django, Node JS, React Native, Flutter, JavaScript, Objective C, Xamarin, Swift, C#, C++
PORTFOLIO
CULTURE
TEAM SIZE
50 - 249 employees
REVIEWS
Clutch Rank: 4.8/5 from 20 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: United States
Other locations: Mexico
PRICE RANGE
$50 - $99 per hour
INDUSTRY EXPERTISE
Blackthorn Vision is a custom software development company that focuses on scaling tech teams, delivering projects on time and within budget, and covering all stages from the initial concept to the final product. They are committed to driving real business value for their clients through software solutions that make a difference. With a passion for excellence and client success, they leverage their technical expertise to exceed expectations, whether building ideas from scratch or scaling engineering teams.
SERVICES
SKILLS
Desktop development, product discovery, API development & integrations, legacy app modernization, software audit, solution consulting, cloud migration & optimization, software re-engineering & re-architecting, UI/UX redesign, cloud-native development, SaaS app development, enterprise application development, cloud security, DevOps, Machine learning, AI, front-end development, back-end development, mobile app modernization
TECH STACK
C#, Java, PHP, React, .NET, Go
PORTFOLIO
CULTURE
TEAM SIZE
50 - 249 employees
REVIEWS
Clutch Rank: 4.8 average review rating from 22 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Ukraine
Other Locations: Poland
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
Jelvix is a global technology partner specializing in software development, helping businesses across various industries to digitally transform and innovate. With over a decade of experience, Jelvix offers a comprehensive range of services, including enterprise software development, IT consulting, and software integration. They are recognized for their expertise in healthcare, real estate, financial services, and investment companies, providing custom software solutions that set their clients apart from the competition.
AWARDS
SERVICES
SKILLS
Digital transformation, Big Data, Internet Of Things, AR/VR, UI/UX design, enterprise engineering, quality management, DevOps, Cloud, Quality Assurance, iOS app development, Android app development
TECH STACK
Java, .NET, Python, PHP, Ruby, Javascript
PORTFOLIO
CULTURE
TEAM SIZE
50 - 249 employees
REVIEWS
Clutch Rank: 4.9/5 from 22 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: Estonia
Other locations: Ukraine
PRICE RANGE
$50 - $99 / hr
INDUSTRY EXPERTISE
Applify is a tech company that specializes in leveraging AWS Cloud to help businesses migrate and modernize their applications. Recognized for their design excellence and tech expertise, they have been acknowledged as one of the top app development companies. They offer extensive expertise in legacy systems and cutting edge technologies. Applify empowers businesses worldwide by creating software solutions, cloud-native apps, mobile apps, and other digitally connected platforms, aiming to transform brands into stronger entities in the digital space.
AWARDS
Recognized by DesignRush as one of the top app development companies.
SERVICES
SKILLS
Cloud, AWS, application modernization, mobile apps, UX design, UI design, Artificial Intelligence, Generative AI, IT strategy
TECH STACK
JavaScript, Node.js, Flutter, Angular, Django, React.js, .NET, Java, PHP, Go, C#, Kotlin, Python, C++, Swift, Ruby, SQL
PORTFOLIO
CULTURE
TEAM SIZE
100+
REVIEWS
Clutch Rank: 5.0 average review rating from 32 reviews
WHAT CLIENTS LOVE
LOCATION
India
PRICE RANGE
$25 - $49
INDUSTRY EXPERTISE
Uptech is an international mobile and web development company that transforms ideas into full-fledged products. With a focus on creativity, domain expertise, and a product development approach, Uptech is dedicated to delivering products that resonate with users and businesses alike. They pride themselves on being a software development team with a product mindset, offering all the necessary expertise to bring bold ideas to the market.
AWARDS
SERVICES
SKILLS
Product Development, Mobile App Development, Web Development, UX/UI Design, Discovery, Software Product Development, AI Development, Enterprise App Modernization, Custom Software Development
TECH STACK
Node.js, React.js, React Native, Django, JavaScript, Swift, Java, Kotlin
PORTFOLIO
CULTURE
TEAM SIZE
100+
REVIEWS
Clutch Rank: 4.9/5 from 40 reviews
WHAT CLIENTS LOVE
LOCATION
Headquarters: USA
Other Locations: Poland, Estonia, Cyprus, Ukraine
PRICE RANGE
$25 - $49 / hr
INDUSTRY EXPERTISE
The companies featured in this list have been carefully selected based on certain criteria that validate their credibility and reputation:
The cost of application modernization can be influenced by the size and complexity of the application, the specific goals of modernization (such as moving to the cloud, updating the user interface, or improving scalability), the technologies involved, and whether the work is done in-house or outsourced.
To narrow it down, take into account the following factors:
In general, the cost of application modernization can range from a few thousand dollars for small, simple applications to several hundred thousand or even millions of dollars for large, complex systems. It's important to conduct a thorough assessment of the existing application and your goals for modernization to develop a realistic budget.
The duration of a legacy system modernization project depends on several factors, similar to those affecting cost. These factors include the size and complexity of the system, the chosen modernization strategy, the technology stack, and the available resources. Here's a rough guideline on what to expect:
The modernization process typically involves several stages, each affecting the timeline:
Key considerations affecting the timeline of modernizing legacy applications:
Legacy application modernization services encompass a range of strategies and solutions designed to update and enhance legacy systems, making them more efficient, scalable, and aligned with current business needs and technology standards. These services can be broadly categorized as follows:
Rehosting:
Also known as "lift and shift," this involves moving applications from on-premises infrastructure to the cloud without changing the application's code. Rehosting is often the first step in modernization, offering immediate benefits such as reduced infrastructure costs and improved scalability without the need for significant redevelopment.
Replatforming:
This involves making minor modifications to the application to take advantage of new cloud infrastructure capabilities without fundamentally changing the core architecture of the legacy application. Examples include using cloud-managed databases or adopting cloud storage solutions.
Refactoring / Rearchitecting:
This approach involves making significant changes to the legacy application's code to fully utilize cloud-native features and capabilities. It often involves moving to a microservices architecture, which allows for better scalability, maintainability, and deployment flexibility. This process can be more time-consuming and costly but results in a more future-proof and scalable application.
Rebuilding:
Rebuilding a legacy application involves rewriting it from scratch while preserving its scope and specifications. This option allows for adopting modern programming languages, frameworks, and architectures, offering an opportunity to address legacy issues and improve performance and scalability.
Replacing:
This involves replacing the legacy system with a new application or a set of applications that fulfill the same business needs. The new solution can be custom-built or purchased as an off-the-shelf product. Replacement is considered when the existing system is too outdated or costly to maintain and modernize.
Encapsulation:
Encapsulation involves leveraging the existing functionality of legacy applications by encapsulating data and functions and making them available as services via an API. This approach allows for incremental modernization and enables legacy systems to interact with modern applications.
Software Portfolio Management:
This service involves analyzing and managing the entire software portfolio to identify modernization opportunities, ensure software compliance, manage licenses, and optimize software investments. It's crucial for strategic planning and resource allocation in large-scale modernization projects.
Cloud Integration Services:
These services focus on integrating cloud services with existing applications to enhance functionality, scalability, and performance. It includes integrating with cloud-based storage, databases, AI/ML services, and serverless computing platforms.
DevOps and Continuous Integration/Continuous Deployment (CI/CD) Implementation:
Modernizing an application often includes adopting DevOps practices and implementing CI/CD pipelines to streamline development, testing, and deployment processes. This enhances agility, improves product quality, and accelerates time to market.
Security Modernization:
Updating security protocols, implementing modern encryption methods, and integrating security services to protect against current threats. This is critical as older applications often lack the defenses to deal with today's sophisticated cyber attacks.
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Authors
Software development enthusiast with 6 years of professional experience in the tech industry.
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