Archive for the ‘Mainframe’ Category

A product I originally created in 1980 celebrates its 30th anniversary today. Comparex remains the most powerful tool on the market for comparing data, text and directory files for the mainframe. With thousands of licenses in production at large sites around the world, Comparex is quite simply the best solution for mainframe data comparison, making it the comparison ‘tool of choice’ for discovering errors, increasing productivity, reducing development costs and shortening deployment times for mainframe development teams. As the creator of Comparex, it thrills me that not only do customers continue to depend on it but that the company I founded continues to add new features for modern workloads.



Most organizations figured out a long time ago that instilling some level of governance and control over application source code (your business applications running on the mainframe) was a very good idea. This governance:

  • Saves costs, drives revenue and mitigates risk.
  • Provides traceability for changes.
  • Moves artifacts through a lifecycle of structure and rigor.
  • And most importantly – it protects production.

Yet as sound as this is, I’m amazed at how the other half of the mainframe is open and unprotected.   By and large, most firms don’t have any change governance in place against the system software (the software that’s running your