Mainframe software from Circle's U.S. subsidiary. C\TREK is an on-line performance problem determination tool for CICS.

VisiTrac analyzes z/OS batch processing to provide an understanding of its structure and performance issues. Interfaces with any scheduling system.

Mainframe software products include the PEngi product line, all written in the PEngiCCL COBOL macro language. Also provides consulting and software development services.

Canadian z/OS software, consulting and education company. Their XTC software shares tape drives between multiple images of the operating system.

Australia/New Zealand distributor of systems and security management, and host access software from companies such as Vanguard, Unicom and ICOM Informatics.

A data center automation company offering its own software (EZ/M) and services for customers with BMC software products.

Hardware (with software) that can be network-attached to mainframes and other platforms to provide outbound Fax capability with confirmation of receipt.

TSO Environment and Administration Manager, plus management and consulting for all aspects of installation and customization of z/OS software.

Terminal emulation software, including 3270 mainframe.

Security Administration Manager (SAM) is a family of software, much of which supports the mainframe. SYSTOR also provides consulting, system integration and outsourcing.