Calibre Manages Your E-Book Collectionhttp://lifehacker.com/516...+book-collection#comments
Lifehacker, and numerous comments. Looks like it is worth a good try, note that a few people apparently messed up their collection structure, because they did not point Calibre to an empty folder as output when reading their disk.
From reading up, now I am ready to consider BookTome (apparently more native for home collection), Calibre, Zotero and Jabref (reference manager). (Seeing JabRef thread, add Mendeley and note Aigaion, server-based and OOoBib, Open Office based) Especially if I get back to my project that has a couple of hundred books involved. Is BookTome helpful in that mix ? Possibly, note that it is freeware but not open source, which might be a concern in using it for a major home library project.
Thats the major freeware installed software stuff, online tools like LibraryThing, GoodReads, Anobii, Worldcat, Abacci all have their own dynamic, a bit different.
Good timing, I'm hoping to get back into this world shortly.