When you buy the tape robot Exabyte Magnum 1×7 you can download a command line tool called
libTool to control it.
Since command line is not everybodies most favorite interface I wrote a little web interface for it.
It will show you which tape is where and can move tapes betweens slots, the drive and the door.
Drop me a line if you could use this. I wrote it, since there was nothing out there. It requires the libTool linux command line application and a webserver.