Liber*M Mainframe Modernization Suite


The LIBER*M Mainframe Migration Suite:
The cost-effective solution for businesses tied down by legacy mainframes


Migrating to the cloud lets you jettison outdated systems and leverage next generation agile technology


Retiring your mainframe can save millions in associated operating, infrastructure and licensing costs


LIBER*M automated software also refactors mission critical exotic languages such as Assembler, Easytrieve, Telon and PL/1

Legacy mainframes: Millions to maintain without key agility today’s business needs

Mainframe legacy applications are a critical asset to your business, but their technological limitations and sky-high support costs make them increasingly unsustainable in today’s business world. When it comes to modernizing z/OS and GCOS8 (BULL) mainframe applications the challenge is to preserve your existing business processes, gain flexibility and scalability—while slashing total cost of ownership.

Migrating Your Mainframe to the Cloud Can Save Millions

The average annual cost per installed MIPS is about $1,600. Hardware and software accounts for 65%
of this total, or approximately $1,040.

Consequently, the annual infrastructure cost for a 15,200 MIPS mainframe is approximately $16 million.

AWS Partner Network Blog; June 12, 2018

LIBER*M gives you options!

When modernizing your legacy z/OS or GCOS8 (BULL) databases and applications you have a variety of options based on your existing system, your current business needs and your goals for the future. These include:

  • Repurposing
  • Refactoring
  • Replatforming
  • Rearchitecting

At mLogica, our expert team can help you determine, through a comprehensive assessment of your existing system, which option or combination of options will help you achieve your goals for greater technical capabilities, increased agility and scalability and dramatically reduced IT costs.

As the experts in automated mainframe migration to the cloud, mLogica makes low-cost, low-risk mainframe modernization possible. Our proprietary automated technology, experienced team and rigorous quality assurance testing are the keys to seamlessly migrating large, complex, on-premise legacy z/OS or GCOS8 (BULL) mainframe business applications and databases to a modern cloud platform with maximum speed and accuracy.

Which mainframe modernization strategy is right for your business?


Not all organizations want to move off their mainframe technologies, due to factors including cost or regulatory obligations. For these businesses, it’s possible to repurpose selected applications and databases to level up their performance with the modern technology ecosystem.

On-premise mainframe datatypes and databases can be modernized and migrated to a relational database management system (RDBMS) while keeping them on-site. Examples include modernizing IBM IMS DB or VSAM to IBM Db2.

Similarly, aging programming technologies can be repurposed to integrate existing applications and databases with advanced programming toolsets. For example, re-factoring ASM to IBM Enterprise COBOL or IBM Enterprise COBOL to Java. Repurposing is also an excellent approach to consolidate technologies on both the data and programming language fronts.

This method makes existing mainframe technologies more powerful, maximizing operational efficiency with minimal cost impact—an effective approach for organizations that want to future-proof core applications, databases and programming languages built over time without migrating to an entirely new platform.


A more complex methodology, refactoring restructures and optimizes the existing code to improve performance, functionality and overall efficiency of mainframe programs. This approach implements significant modifications to the code base of applications and databases, with the goal of removing technical debt and improving non-functional attributes that restrict agility, cost efficiency and innovation.

Refactoring allows businesses to modernize legacy database environments such as ISAM, VSAM, Db2 and IMS DB to a relational RDBMS environment. We can also refactor legacy mainframe programming technologies such as Easytrieve, Assembler, Telon, PL/I and other 4GLs to COBOL, Java and C# and migrate COBOL to Java, C#, and C++.

In-Depth Experience Lets Us Create Solutions Customized for Your Needs

While many organizations prefer to refactor Assembler code directly to a more modern language such as Java or C#, there are situations in which COBOL is a logical target. These include:

  1. Optimizing on the mainframe by consolidating existing languages to COBOL
  2. Retaining the ability to leverage in-house COBOL expertise
  3. Replatforming mainframe COBOL to a distributed environment, which requires refactoring Assembler to COBOL

Refactoring Assembler to COBOL or Java with mLogica’s LIBER*M automated conversion software suite ensures compatibility with the target system, addresses system dependencies, aligns data representations and improves code maintainability. Inaccurate refactoring can result in migration failures, including runtime errors, incorrect results and difficulties maintaining the migrated system.

Could Your Refactoring Initiative Fail at the Last Mile?

Your legacy system comprises a complex array of databases, applications and languages. While your team focuses on components such as COBOL, CICS, VSAM and Db2 that drive the bulk of your mainframe, it's also critical to address the technologies that support them, including Assembler, Easytrieve, Telon, PL/1 and more.

These technologies, which underpin every critical business function, require comprehensive assessment before modernization can begin, to determine the role each plays in relation to the others and to mainframe function as a whole. This allows you to create an end-to-end modernization strategy. Without a team that is expert in these technologies, your refactoring initiative could stall in the home stretch.

Can You Avoid "The Last Mile Challenge"?

Invariably when our team is brought in to rescue mainframe modernizations and migration projects that are failing in the final stages, we find they have technologies such as Easytrieve, Assembler, Telon, PL/I and other 4GLs in common. Without precision conversion of these critical supporting components, system modernizations are often doomed to disastrous delays or outright failure.

At mlogica, our projects always begin with a comprehensive assessment that documents all technologies and up- and downstream dependencies, so each component of your existing system is fully documented. These components are then placed on a roadmap right at the outset, for expert conversion with no surprises, no logjams—and no delays, just a seamless transition to leading edge technologies that future-proof your business.


Replatforming migrates a business’s mainframe applications and databases to a new runtime environment with minimal changes to the code, while simultaneously ensuring code structures, functions and features remain intact. This allows organizations to offload their mainframe technologies from legacy z/OS, GCOS8 (BULL) and more to an x86-based Linux environment and transform them using new and better toolsets.


Rearchitecting materially changes the code of mainframe programs. This approach migrates mainframe workloads to new application architecture so that enterprises can integrate advanced features into their applications and databases.

Rearchitecting starts with an automated in-depth analysis of the existing assets, including assessment and abstraction of embedded business rules using business logic extraction (BLE) technology. Once this process is completed, automated tools can be effectively used to create the bulk of the new application.

Rearchitecting end-of-life mainframe systems allows businesses to gain enhanced capabilities by leveraging an optimized mix of modern technologies. This is an effective approach when the objective is not just to perform a like-for-like replacement, but to implement functional changes without undergoing a full rewrite.

mLogica clears the way to mainframe migration to the cloud by effectively reconciling the twin demands of business: protecting the rich functionality of legacy applications while using standard and open-source technologies to slash total cost of ownership turning your systems into a platform for innovation.

Designed for rapid, controlled, virtually seamless modernization of mainframe business applications, the LIBER*M Mainframe Modernization Suite combines the best of legacy application modernization approaches, allowing organizations to migrate off mainframes while still fully leveraging their existing assets.


Discovery: Automation technology to perform a highly detailed, targeted assessment of the entire legacy application environment


Transaction processing monitor for COBOL and C applications in Java EE environment on Linux


Supports replatforming of IBM z/OS CICS from mainframe to Linux, including tools to facilitate VSAM to SQL and more


Supports replatforming of GCOS8 mainframe applications to Linux

LIBER*Batch Z/8

Replacement of IBM z/OS and GCOS8 batch environment


High-performing, cost-effective, enterprise and GCOS8 fully compatible COBOL with flexible licensing options


Automated code refactoring of legacy applications including Assembler, COBOL, Easytrieve, PL/I and others to modern languages such as Java, C# and C++


Business logic extraction for UniVerseDB, Pick/BASIC and COBOL


Automated data and database migration from ISAM, VSAM, Db2 z/OS, IMS DB and IDMS to relational databases such as Oracle, Db2 LUW, MSSQL Server and more


Automated migration of all common schedulers, including BMC Control-M, CA 7, Automatic Dollar Universe

With LIBER*M, mLogica offers the most powerful suite of legacy migration tools available, leveraging decades of expertise in cross-platform migration of the most business-critical enterprise software and mainframe environments. We also license our compiler and translator to our customers in a subscription model.

LIBER*M Customer Success Stories

Mainframe modernization, whether on-prem, to the cloud or via a hybrid solution, has saved mLogica clients millions in support and licensing costs while boosting critical adaptability, scalability, performance and security.

Download Your Success Story

Complete the form below to receive your downloadable mLogica success story