Sort It! Apps has Collectors for the mac in the Mac App Store for FREE (regularly $29.99) for a limited time.

Quickly catalog, filter, sort, and manage all of the collections of things you own. Uses database search and manual barcode entry to quickly add your items into your collection. Create a free account and store your collection list in the cloud online. Access from any iOS, Mac, Android, or web device any time. The app can help you manage the following collections: Books, Movies, Video Games, Music, Shoes, Toy Cars, Legos, Action, Figures, Beanie Babies, Guns, Wine, Coins, Currency, Art, Comic Books, Snow Globes, Stamps, Dolls, Pez, Bobbleheads, Ornaments, and more!