The reason I said "could" is because it needs a lot more adoption, which is holding it back because it's much less attractive due to lack of adoption.
That said, I think the de facto (/only) option is https://5apps.com/. I also recall that you were able to use Google Drive and Dropbox with the library, but I can't find info about that now...
That said, I think the de facto (/only) option is https://5apps.com/. I also recall that you were able to use Google Drive and Dropbox with the library, but I can't find info about that now...