Alexandria is a GNOME application to help manage a book collection. It retrieves book information (including cover pictures) from several online libraries, allows you to search for a book (either by EAN/ISBN, title, authors, or keyword), can import and export data into ONIX, Tellico, and EAN/ISBN-list formats, generates Web pages from your libraries, allows marking your books as loaned, saves data using the YAML format, features an HIG-compliant user interface, shows books in different views that can be filtered or sorted, and handles book rating and notes.
JSqsh is a Java reimplementation of a console based (i.e. non-graphical) database query tool called sqsh. Jsqsh combines the ability to run SQL queries against any database with a JDBC driver along with much of the functionality of a Unix shell, such as piping the results of queries out to external programs (grep, more, etc.), expanding variables, redirecting output to files, command line editing, tab-completion of object names, and more.