I started programming back on an Apple ][+ in the very early 1980s, and then later on moved to an Apple IIgs.
About 8 years ago, I decided it was time to retrieve the data from my old discs, and so I bought a IIgs and transferred most of the files using ADT. I wrote a front end for ADT on my Windows computer (although I don't remember why), and wrote some code to parse catalog listings and such.
Recently, I found about 40 discs that I apparently didn't transfer back then. So I went through the process again, but before my Apple //e arrived, I found that I had indeed transferred those discs. But, my renewed interest led me to putting some stuff online at http://apple.rscott.org .
Essentially, it is an interface to the 35-track disc files from Asimov, TOSEC, and a couple other sources. It lets you search the discs by the disc name, as well as search by the filenames on the discs (if I was able to parse the catalog listing properly). It also lets you upload your own .dsk (or .po) file (which it will keep private, so others cannot access it). Once you have chosen a disc, it shows some basic information such as a catalog listing and a free/used map of the tracks/sectors, with links to a few other tools. It lets you download the .dsk file, see a dump of the entire disc contents, run it in an online emulator, and even create a 4K .bmp file showing any ASCII contents of the disc.
I likely won't have a lot of time to spend on updating the site (giving priority to bugs; I'm sure, for example, that some discs will not show up properly, especially ProDOS discs), but wanted to make sure people were aware before I lost interest and a potentially useful resource went unused.