This is what I was doing some months ago.
I was working on a proposal related to a SAP technical upgrade and depending of the person I talk to, a different tools are recommended to me. This is just an initial opinion, probably when I gain more visibility it will be different, but by the moment this was a fanny situation.
For the technical upgrade:
Panaya: this is a tool that takes care so much about the look and feel. It provides reports (that can be done during the evolution of the ABAP remediation) showing information about the % of programs, functions… that requires remediation. The people that used it commented that they are happy of doing it: the client see how much effort is needed to test 100% of the application and really understand that we are not over-budgeting the project. For the IT people it does not provide any value.
Smartshift: the same concept than Panaya, but in addition enables you to correct different programs, replace obsolete functions and they guarantee that the 99% of the ABAP remediation can be done in a month.
For the functional remediation:
EMC Intelligent Cloning for SAP: enables you to copy data from an environment to other. This is very useful to perform the functional tests with the right data, you save time and some dollars.
Accenture Clon-Test: it’s mainly the same concept.