The BRU Backup and Restore Utility features data-verified backups, scalability, configurability, and ease of use for Linux and Unix. Versions are available for Linux, FreeBSD, and most UNIX variants. It works via an X11 interface, command line interactive, or through a scripted, scheduled (CRON) mechanism.
httpMonitor is a Python program which lets you monitor the HTTP traffic between a browser and a Web server. You configure your browser to use httpMonitor as its proxy to ensure that all HTTP traffic between browser and server goes via httpMonitor. In a XML-configuration file you can specify a Python-function as processor for the HTTP-messages you are interested in (requests or responses, which match certain criteria). You may have as many processors as you want, without modifying the actual program. The only thing you need to do is configure the httpMonitor and write your processors.
LineControlTime is a server which allows you to control which users can connect to the Internet through your server. It is based on Stefan Fuchs's LineControl, and it features a 'Time Control' feature which uses a MySQL database to store the amount of time left for each user. The authentication mechanism is based on PAM. Users can also be authorized or refused according to the current time. It works with ISDN or analog lines.
snapscreenshot takes a screenshot from a single Linux virtual console (tty) or from a group of ttys. It does not care if it is a plain text mode or framebuffer console; it only needs read-access to /dev/vcsa* -devices. The program outputs a tga file to stdout; use an image manipulation program to convert it to png or whatever you prefer.
QPlot is an Advanced Matematical Calculator for Qtopia, featuring a nice calculation mode (you see the statement and the result), arbitrary precision calculations, an extensive math library (trig, inverse trig, hyp, inverse hyp, algebraic, etc.), integration, differentiation, quadratic differentiation, graphing (including the ability to easily move around and zoom in/out), equation solving (quadratically or using Newton's method),an ability to write programs (and run them directly from desktop), and extensibility.