Brewtarget is a calculator for brewing beer. It is a Qt-based program which allows you to create recipes from a database of ingredients. It calculates all the important parameters, helps you with mash temperatures, and just makes the process of recipe formulation much easier.

Avahi is a fully LGPL framework for Multicast DNS Service Discovery. It allows programs to publish and discover services and hosts running on a local network with no specific configuration. For example you can plug into a network and instantly find printers to print to, files to look at and people to talk to.

The traceroute utility displays the route used by IP packets on their way to a specified network (or Internet) host. Traceroute displays the IP number and host name (if possible) of the machines along the route taken by the packets. Traceroute is used as a network debugging tool. If you're having network connectivity problems, traceroute will show you where the trouble is coming from along the route.

Cantor is an application to allow you to you use your favorite mathematical applications from within an elegant worksheet interface. It provides dialogs to assist with common tasks and allows you to share your worksheets with others.

gadmin-rsync is an easy to use GTK+ frontend for the rsync server.

Zanshin is a powerful yet simple application for managing your day to day actions and notes. It helps you organize and reduce the cognitive pressure of what one has to do in one's job and personal life. You'll never forget anything anymore, having a "mind like water".