Xfburn is a tool to help burning CDs and DVDs. It fits well in the Xfce Desktop Environment but can be used anywhere.

SoundConverter is a simple sound converter application for the GNOME environment. It reads sound files in any format supported by GStreamer and outputs them in Ogg Vorbis, FLAC, or WAV format, or MP3 format if you have the GStreamer LAME plugin.

Xfce is a lightweight desktop environment for unix-like operating systems. It aims to be fast and lightweight, while still being visually appealing and easy to use. Designed for productivity, it loads and executes applications fast, while conserving system resources.

Wireshark is a network "sniffer" - a tool that captures and analyzes packets off the wire. Wireshark can decode too many protocols to list here.

This is the GNOME Desktop environment, an intuitive and attractive desktop, with extra components.

PulseAudio, previously known as Polypaudio, is a sound server for POSIX and WIN32 systems. It is a drop in replacement for the ESD sound server with much better latency, mixing/re-sampling quality and overall architecture.