NetTraf consists of a daemon that gets information from a Linux interface and sends it on the network to NetTraf clients. Clients then can use the information to show to the user how the connection is performing. This program is mostly useful with dial-up connections on a masqueraded server, so all users on the network know when the connection is active, and if there is too much traffic on the line. This package DOES NOT comes with any client applications; you can find them on the homepage. The author needs help to develop a Linux client.
GETGUI is a standalone X11 utility that can be used to easily add a degree of graphical user interface functionality to shell scripts or other programs. It can display informational messages and progress messages, or it can be used to get user input via dialog boxes, keyboard input fields, pulldown menus, or select boxes. "Wizard"-type procedural interfaces can be implemented using a series of getgui invocations. It also includes a popup alarm clock utility (eg. "It's time to leave!").
Allegro is a multi-platform game library for C/C++ developers that provides many functions for graphics, sounds, player input (keyboard, mouse, and joystick), and timers. It also provides fixed and floating point mathematical functions, 3D functions, file management functions, compressed datafile, and a GUI.
logsurfer is a log checking/auditing tool similar to swatch and logcheck but with the capability of handling multi-line messages and dynamically adapting the ruleset. It is written in portable C, well documented, fast, and flexible. It works on any textfile or stdin, can be run at intervals or continuously, and has timeouts and resource limits.
rt is an n-dimensional raytracer. It supports any positive number of spatial dimensions, color and grayscale, cylinders with an arbitrary number of round dimensions (spheres and cubes are special cases of cylinders), quadratic surfaces, convex hulls, regular polytopes, unions, intersections, cuts, extrusions, reflection, refraction, functional texture maps, portals into other traces, ambient light, multiple light sources, directional light sources, gamma correction, fish-eye effect, and output as PNG or PPM. It has been tested under DOS, Solaris, Digital Unix, FreeBSD, NetBSD, Linux, Ultrix, System V, and BeOS.
Netcat is a simple Unix utility which reads and writes data across network connections, using TCP or UDP protocol. It is designed to be a reliable backend tool that can be used directly or easily driven by other programs time, it is a feature-rich network debugging and exploration tool, since it can create almost any kind of connection you would need and has several interesting built-in capabilities.