Dovetailed Technologies

Co:Z Co-Processing Toolkit for z/OS

Licensing Frequently Asked Questions

  1. Why did you change your free license?

  2. Can we use the free Co:Z Community License at our company?

  3. Is the Co:Z Co-Processing Toolkit open source?

  4. Does the Co:Z Co-Processing Toolkit use source?

  5. Do you offer an evaluation license?

  6. Why has Co:Z FTP-SSH Proxy been changed to a free add-on?


  1. Why did you change your free license?

    Prior to version 1.7.0, the Co:Z Co-Processing Toolkit was distributed under the Apache V2 license (modified to clarify object code content). Some organizations have issues with using open source licenses, and we also wanted to adopt a free-to-use Community License that was consistent with our fee-based Enterprise License and Support Agreement. We feel that these changes will be beneficial to both our free community users as well as our commercial support customers. We remain committed to our "free-to-use" product philosophy.

  2. Can we use the free Co:Z Community License at our company?

    We have designed the Community License to be acceptable to most organizations for their own use, regardless of whether they are commercial enterprises, government agencies, educational institutions, or non-profit organizations. Please read the terms and restrictions, and feel free to contact us if you have any questions.

    Please note that the free Community License does not provide for product support. Our free forum is available to Community License users, and we try to answer questions there as time permits.

    We also offer Co:Z Enterprise License and Support agreements for an annual fee. Please contact us for more information.

  3. Is the Co:Z Co-Processing Toolkit open source?

    No. We do, however, make source code for the Co:Z Target System Toolkit and Co:Z FTP-SSH Proxy available under the Apache V2 license.

  4. Does the Co:Z Co-Processing Toolkit use open source?

    Yes. Co:Z SFTP uses selected source from the sftp and sftp-server modules of portable OpenSSH, which we have extensively enhanced to fully exploit the z/OS environment. Source code for OpenSSH is available from the OpenSSH web site

  5. Do you offer an evaluation license?

    No, but you are welcome to download the product under the terms of our free Community License and to use or evaluate it in your environment for as long as you wish. If you have questions, you are welcome to use our free forum or to contact us to discuss your requirements.

  6. Why has Co:Z FTP-SSH Proxy been changed to a free add-on?

    As described above, the Co:Z Co-Processing Toolkit is licensed in binary form under our free Community License or our paid Enterprise License and Support agreement. However, the Co:Z FTP-SSH is a pure Java program which we make available as open source. Therefore, it is more suitable for release under the Apache V2 license.