Suricata is a network Intrusion Detection System (IDS). It is based on rules (and is fully compatible with snort rules) to detect a variety of attacks / probes by searching packet content.

needrestart checks which daemons need to be restarted after library upgrades. It is inspired by checkrestart from the debian-goodies package.

These are fixed-width fonts suitable for terminals, editors, etc. If you have to work for extended time in front of monitor (i.e. over eight hours), you may find that using of these fonts reduces your eyes-fatigue.

Python is a high-level, interactive, object-oriented language. Its 2.7 version includes an extensive class library with lots of goodies for network programming, system administration, sounds and graphics.

StarPlot is a GTK+ based program that can be used interactively to view three-dimensional perspective charts of stars. Charts can be re-centered, rotated, or zoomed in or out with a mouse click (this can also, of course, be done via dialog boxes for more precision). Stars may be viewed (or ignored) by spectral class and absolute magnitude.

libssh2 is a client-side C library implementing the SSH2 protocol. It supports regular terminal, SCP and SFTP (v1-v5) sessions; port forwarding, X11 forwarding; password, key-based and keyboard-interactive authentication.