There is a new version of TSMExplorer available and it has added support for Spectrum Protect Plus. See can download a trial version of 5.2.3 here. TSMExplorer has a load of features and provides a great central management console when you have multiple TSM/Spectrum Protect Servers. With the added support of managing Spectrum Protect Plus it's even easier to manage your environment.
Here is a video of an older version of TSMExplorer so you can get a feel for the product.
Here is a video of the client agent and how it works with the TSMExplorer console to allow access to the client options files and logs for easier management.