IPsec (Internet Protocol security) offers end-to-end security for network traffic at the IP layer.

wxGlade is a GUI designer written in Python with the popular GUI toolkit wxPython, that helps you create wxWidgets/wxPython user interfaces. At the moment it can generate Python, C++, Perl, Lisp and XRC (wxWidgets' XML resources) code.

efax is a small ANSI C/POSIX program that provides the data transport function for fax applications using any Class 1 or Class 2 fax modem Another program, efix, converts between fax, text, bitmap and grayscale formats. fax, a shell script, provides a simple user interface to the efax and efix programs. It allows you to send text or Postscript files as faxes and receive, print or preview received faxes.

PulseEffects is an advanced system-wide equalizer that works with PulseAudio. It can apply system-wide effects to all running application or selected apps.

Totem is a simple yet featureful media player for GNOME which can read a large number of file formats.

apt-listbugs is a tool which retrieves bug reports from the Debian Bug Tracking System and lists them. Especially, it is intended to be invoked before each installation/upgrade by APT in order to check whether the installation/upgrade is safe.