Data Management Clients
The "Data Management Clients" are a family of libraries and tools that implements, and abstract away, the details of Grid and non-Grid protocols.
You can query which version is in which stage of release with our release matrix.
For more details on each protocol, you can consult the protocol cheat-sheet to see how do they compare.
Support
For support, you may contact us via dmc-support@cern.ch, or via Service Now (note that you need an account at CERN).