New Co:Z Release 7.1.1 is available. Review the Release Notes and Download.
New Co:Z Release 7.1.1 is available.

The Co:Z Co-Processing Toolkit for z/OS is used widely throughout the z/OS community. Our users have discovered that Co:Z offers them the essential tools they need to connect their z/OS platforms to other computing environments securely and reliably.

While Co:Z can be used in a number of different ways, the primary use cases are:

  • z/OS Enabled SFTP

  • Co:Z SFTP is a port of OpenSSH SFTP for z/OS which adds support for z/OS datasets, catalogs, spool files, SMF, etc. This product is designed to work with secure SSH connections provided by IBM z/OS OpenSSH. The rich set of z/OS features in Co:Z SFTP are implemented in such a way as to be completely accessible from OpenSSH or standard-compliant SFTP products on other platforms. The Co:Z SFTP client and Co:Z Batch are frequently used together.
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  • z/OS Unix Batch Integration

  • Co:Z Batch is an IBM z/OS batch utility program that allows Unix commands (including shell scripts) to be executed in a batch job step. Co:Z Dataset Pipes commands and Co:Z z/OS Utilities are easily integrated with Co:Z Batch jobs. Co:Z Batch can also be used to script a Co:Z SFTP client job that, for example, transfers a remote file to a z/OS dataset.
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  • z/OS Hybrid Batch

  • Co:Z is perfectly positioned to allow our customers to relocate traditional z/OS programs to servers running Linux or AIX. We refer to this model as z/OS Hybrid Batch processing.
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  • z/OS Remote Services

  • The commands provided by the Co:Z Dataset Pipes component enable z/OS services and data to be incorporated into standard workloads running on Linux or AIX. We refer to this model as z/OS Remote Services.
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Co:Z Toolkit Components


Co:Z SFTP

z/OS enabled SFTP server and client
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Co:Z Batch

Better BPXBATCH
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Co:Z Dataset Pipes

Dataset conversion between byte streams and z/OS Datasets and POSIX files
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Co:Z Launcher

Cooperative z/OS Hybrid Batch processing
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Co:Z z/OS Utilities

Co:Z z/OS Utilities
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