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.
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.
Network-config is a simple and easy to use program that helps in configuring the network interfaces for Linux-based operating systems. It allows you to have multiple configurations for the same computer, and to easily configure NAT for Internet sharing. It can also be used to scan for wireless networks. It is written in Perl and uses GTK2+, but also works as a command line program.
KmusicdB is a music information manager for KDE, using PostgreSQL as a backend. You can add your music collection to the database, and view it in a convenient browser. It currently supports the ability to add and edit artists, add and edit titles (with album pictures), and a track editor. The ability to generate reports and statistics, and also to search the database is implemented, as well as creating and opening, backing up and restoring databases. It is highly customizable, and fast. CDDB functionality has also been implemented.
Outwit is a suite of tools based on the Unix tool design principles allowing the processing of Windows application data with sophisticated data manipulation pipelines. The outwit tools offer access to the Windows clipboard, the registry, the event log, relational databases, document properties, shell links, and the event log.