What is "panvalet"

Computer Associates Panvalet® (also known as CA-Panvalet) is a revision control and source code management system for mainframe computers such as the IBM System z and IBM System/370 running the z/OS and z/VSE operating systems. Unlike open-source solutions such as CVS, SVN or Mercurial, Panvalet is a closed source, proprietary system for versioning and control of source code such as Microsoft Visual SourceSafe on personal computers. It uses a client-server model where users check-out files to change and check them back into the repository when finished.

Panvalet can be used to manage program source code, JCL, and object module files. It supports granular access controls including check-in and check-out by specific mainframe user IDs.