I've been notified by the developer of TSMExplorer that a more current free edition is available for anyone looking for a GUI based management tool for TSM. Below is a brief note from the developer.
"TSMExplorer GUI is free application for TSM server management. The solution is a comfortable tool to control and manage from a single sign-on. This version is free for works with version TSM 5.x 6.1 6.2”