Integrate COBOL applications with web services, XML and Java

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IBM COBOL for AIX, V5.1 is a development environment for building business-critical COBOL applications on Power Systems. It includes a COBOL compiler, a COBOL library for non-production use and a debugger that lets you visually debug a program from your workstation. COBOL for AIX uses common compiler back end technology from XL C, XL C/C++ and XL Fortran to give better performance.

IBM COBOL Runtime Environment for AIX V5.1 is the runtime component of the COBOL for AIX product. Deployment of IBM COBOL applications requires the COBOL Runtime Environment to execute the applications. With this orderable COBOL Runtime Environment, the redistribution of runtime libraries in the COBOL for AIX product is no longer required or permitted.

COBOL for AIX enables you to create 32-bit or 64-bit applications.

This software:

Is designed for IBM Power Systems and maximizes application performance

Provides XML and Java interoperability

Provides symbolic debugger information

Delivers middleware integration

Delivers development support

COBOL for AIX resources

Communities and forums


Find the latest technical, business and educational information about COBOL and related z/OS, IBM i and AIX topics.

Rational RFE community

Collaborate directly with the IBM product development teams and other product users about future product enhancements.

Data sheet


Learn about application development in today’s changing marketplace.

Documentation library

COBOL for AIX documentation library

Review the collection of announcement letters and product documentation for COBOL for AIX.

Fix list

COBOL for AIX fix list

Review this complete listing of releases, refreshes, fix packs and interim fixes sorted by version for IBM COBOL for AIX.

Frequently asked questions

IBM Compiler Licensing on AIX and Linux on Power Technote FAQs

Learn the answers to common questions about the licensing model of IBM Compilers on AIX and Linux on Power.


Migrating to IBM COBOL for AIX

Learn how to migrate COBOL source programs to IBM COBOL for AIX.

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IBM Compilers

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IBM COBOL for AIX, V5.1 and IBM COBOL Runtime Environment for AIX V5.1 provide the following updates:


Performance improvements

Productivity and usability enhancements

New separately orderable COBOL Runtime library updates

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