Mainframe and Legacy Systems Migration and Modernization Tools Reviews and Ratings
What are Mainframe and Legacy Systems Migration and Modernization Tools?
Gartner defines mainframe and legacy systems modernization tools as software supporting modernization of applications running on mainframe and/or other legacy platforms. The target modernization platform could be the same as the source or different, such as x86 and public cloud. Tools in this market can cover the whole modernization life cycle and support a variety of source and target platforms, languages and databases, or be limited to a single phase of the transformation journey or to a single software stack.
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Google Cloud Platform is a software that offers a suite of cloud computing services, including infrastructure as a service, platform as a service, and serverless computing environments. It provides tools for computing, storage, networking, data analytics, artificial intelligence, and machine learning. The software supports the deployment and scaling of applications and services on a highly available and secure global infrastructure. It enables organizations to manage workloads, develop and run applications, and analyze large volumes of data to address business challenges such as resource optimization, faster time-to-market, and scalability for enterprise and developer needs.
ARCAD is a software designed to manage and modernize IBM i application development environments. It provides features for continuous integration, deployment automation, source code management, and automated testing. The software supports version control, code quality analysis, and change management for applications written in RPG, COBOL, CL, and other IBM i languages. ARCAD addresses business challenges related to maintaining legacy systems, improving development efficiency, reducing error rates, and supporting DevOps practices in IBM i environments. The software assists organizations in adapting existing applications to evolving business requirements and integrating with modern development tools.
AWS Mainframe Modernization is a software that provides tools and resources to help organizations migrate, modernize, and operate their mainframe workloads in the cloud. The software enables users to assess existing mainframe applications, replatform or refactor them, and deploy them on scalable cloud infrastructure. Through automated migration tools, runtime environments, and integrated development features, AWS Mainframe Modernization facilitates the transition of legacy workloads, supports testing and debugging, and streamlines operational management. This software addresses challenges associated with maintaining and updating mainframe environments by offering a range of modernization options designed to reduce complexity and improve agility in managing core business applications.
OpenFrame is a software designed to assist organizations in rehosting mainframe applications onto open systems. It enables businesses to migrate legacy workloads from traditional mainframe environments to industry-standard platforms without altering application code. The software provides compatibility for mainframe technologies such as COBOL, JCL, and DB2, allowing continued operation and maintenance of core business processes. OpenFrame addresses the need to reduce mainframe-related costs and enhance scalability by facilitating integration with modern infrastructure, while supporting application performance, reliability, and data integrity during and after migration. Its features include automated migration tools, emulation of mainframe functionalities, and interoperability with existing enterprise systems to streamline business operations.
PROGRESSION is a software designed to facilitate enterprise resource planning and business process management. The software supports the integration of various business functions, including finance, supply chain, manufacturing, and human resources, into a unified platform that enables data visibility and process optimization. It offers tools for workflow automation, reporting, and analytics that assist organizations in managing operations with accuracy and efficiency. PROGRESSION addresses challenges such as fragmented data and siloed processes by delivering features that enhance coordination, transparency, and operational control across multiple departments. The software provides scalable solutions for businesses seeking to streamline processes, manage projects, and improve decision-making through centralized information access.
Rocket Enterprise Suite is a comprehensive application modernization solution that enables organizations to efficiently develop, test, deploy, and manage mainframe applications across hybrid IT environments. Supporting COBOL and PL/I workloads, it offers flexible deployment options—on-premises, in the cloud, or in hybrid configurations. The suite streamlines development with modern IDEs, DevOps integration, containerized development environments, and a Natural Language Developer Assistant that allows developers to interact with and understand code using plain language. It also supports replatforming of core systems and exposes mainframe functionality through RESTful APIs and modern observability tools like OpenTelemetry. With a proven track record and thousands of customers worldwide, Rocket Software empowers organizations to accelerate mainframe modernization with confidence.
Features of Mainframe and Legacy Systems Migration and Modernization Tools
Updated August 2025Mandatory Features:
Ability to facilitate the conversion of legacy applications hosted on mainframe or other legacy platforms to run using modern software stacks
Optional Features:
Discovery and assessment capabilities to analyze existing codebase, discover current application architecture and dependencies, analyze existing business rules and code complexity, and any other task to scope and plan a migration and modernization project
AI-augmented capabilities to refactor monoliths and translate legacy code to modern programming language code
Application transformation capabilities to incrementally refactor subsystems and migrate them to target language environments
Regression testing tools that automate the execution of test cases on legacy applications to consistently verify and ensure that migration changes have not negatively impacted existing functionality
Data replication and/or data migration capabilities to exchange data between legacy and modern platforms
Documentation capabilities to create proper documentation for new generated artifacts (such as converted code)
DevOps platforms, artifact registry and integrated development environments (IDEs)





