Public and custom on-site IBM mainframe classroom training and books/reference guides, especially z/OS JCL, COBOL and WebSphere.

An I.B.M. business partner functioning as a software distributor, consulting services and technical training/education provider. Services include z/OS, DB2, and Data Security.

Provides education, consulting and PAI/O Driver software to assist in acquiring and managing storage subsystems in a z/OS environment.

An Information Technology Education and Services firm specializing in z/OS Mainframe, Enterprise UNIX, Linux, and open-standards technologies.

Providers of Enterprise-Class Hardware and Maintenance, Data Destruction and Compliance Services. An IT asset management concern featuring refurbished IBM mainframes, midrange processors and peripheral equipment and related maintenance services.

A provider of consulting and planning services for enterprise storage solutions, advanced recovery, business continuity and disaster recovery mainframe z/Series and large systems environments.

A Chicago-area company offering new and used IBM mainframes, Flex-ES mainframe systems, upgrades, peripherals and services, including backup and disaster recovery.

On-site and remote z/VM and Linux applications and systems programming services.

Offers remote database management support. 24/7 support of database environments and operating systems in place of or in addition to client resources.

Public and on-site training for mainframe application developers, systems programmers and operators. From Assembler to z/OS. Encompasses Circle Education, Amdahl Education, Laird Ståhl Training and RSM Education.