Marble Computer is one of the oldest Independent Software Vendors for IBM Mainframe organizations in the Southwest region. We provide enterprise organizations with COBOL development and maintenance software tools. We have been able to help businesses and government agencies with developing and maintaining COBOL applications on z/OS Mainframes. Contact us today to learn more about what our software company offers to prospective clients.
Marble Computer | Analytical and Application Management Software Company

Why Excellence Matters | Make Marble Computer Your Software Company
Marble Computer is a small, veteran-owned software company that specializes in keeping the focus on mainframe software. Our software company excels in the area of analyzing COBOL programs and applications. Marble Computer is the COBOL Analytics Company. When a company chooses us for our software they can expect the enhancement of speed, reaction, efficiency, and processing of their internal programs.
The products our software company offers for clients include:
- Control/DCD
- COBOL v.6.2 Migration Software Tools
- DCD/IV
- RES
- The Digital Documentation Manager
- COBOL Analytics
- The Alternate Compile Listing
- COBOL Maintenance and Development Software Tools
Marble Computer Takes On All Perplexing Challenges
Application modernization is a fact of life for most IT organizations and any software company. The use of new computing platforms such as the Cloud as well as new mobile computing devices has created challenges far beyond one could ever imagine a few years ago. However, these Legacy Applications contain the mission-critical data processes of past generations. The key to success is to unearth these secrets and accurately upgrade these Legacy Applications or move them to new platforms as required. At Marble Computer, we have the software products to make this task easier.
A History of Our Clientele
Marble Computer has a long history of supporting enterprise computing clients that date back to 1976. Marble Computer delivers best-of-breed software tools for IBM mainframe customers to ensure the integrity, performance, and analysis of their COBOL applications.
Our flagship product, Control/DCD, documents COBOL programs with our Digital Document Manual (DDM) technology. Docet/EV documents the IT Enterprise.
Marble Computer’s software tools focus on Dev/Ops, Legacy Modernization and Cloud Migration projects.

The Tools We Incorporate Into Our Software Applications
RES
RES is an advanced set of software products for documenting the IT Enterprise. Docet/EV is a must-have tool for Legacy Modernization, DevOps and Cloud Migration implementations.
Control/DCD
Control/DCD is the latest version of the DCD (Data Correlation and Document) product. Control/DCD significantly reduces the cost of maintaining COBOL applications and produces the Digital Documentation Manual (DDM).
DCD Pre-Compiler for COBOL 6.2
Control/DCD has the necessary functionality to provide warnings and capture errors in older versions of IBM compilers. There are many types of errors that the Control/DCD pre-compiler will catch thus making migrations to enterprise COBOL compilers faster and less costly.

Featured Articles and White
Papers
Future of Cobol
Marble Computer Welcomes Our Newest Control/DCD Clients
Below is a list of clients that we have proudly served.
- Dillard’s Department Stores
- Anthem Healthcare
- Blue Cross Blue Shield of South Carolina
- Blue Cross Blue Shield of Alabama
- Healthcare Services
- Caterpillar
- Social Security Administrations
- State of California
- State of Illinois
- John Deere
- State of Hawaii
- State of Louisiana
Control DCD for Conversion to Cobol v.6.2
Control DCD Brochure
IBM Reseller Announcement
Our software company is proud to be an IBM Business Partner reselling z/OS software products. Our focus will initially be on the application development tools, rational and problem determination tools.
Why Control/DCD is Useful for Moving Away from V 4.2
The observation made on our part is that companies are looking at what is needed for conversion to COBOL 6.2 and are moving at a glacial pace to do the conversion.
There may be several reasons for moving slowly and only one of these reasons may be the time it takes to convert the COBOL, yet the time to do the conversion is still a significant consideration.

Our Customers















Choose Marble Computer for All Your Computing and Analytical Needs
COBOL has been around since 1960 and it still accounts for the majority of business transactions and processing functions of today. Our software company maintains COBOL to help companies understand how and why changes must be applied to their applications. Contact Marble Computer today to allow our software company to earn your trust and business.