I've been using Tellico for cataloguing and ISBN lookup, in conjunction with a script to hunt for ISBNs in PDFs, but may try Zotero now. I've been normalizing f

I've been using Tellico for cataloguing and ISBN lookup, in conjunction with a script to hunt for ISBNs in PDFs, but may try Zotero now. I've been normalizing file names to the form [author ‘:’] title [metadata] [‘.’ type] where the metadata is ‘[’ key ‘=’ value [‘;’ …] ‘]’, normally including ‘isbn=’ for books and ‘doi=’ for papers (and other things for audio and images).