Good morning! There are no applications available that will help you open .TD0 (Teledisk) files natively on Mac. As a work-around, you can install Windows onto your computer either as a virtual machine (using a problem like Parallels or VMWare), or in a dual-boot environment using Boot Camp. Once you've gotten Windows installed, you can find an archive of Teledisk installers here; install whichever version you wish, and then use it to extract data from your .TD0 file!
Hello again! It's been a bit since we chatted, so I wanted to check in and see if you had successfully worked around being able to open TD0 files on your Mac?
Please let me know. I look forward to hearing back from you!