Dialog lets you to present a variety of questions or display messages using dialog boxes from a shell script (or any scripting language). These types of dialog boxes are implemented: yes/no box, menu box, input box, message box, text box, info box, guage box, checklist box, fileselection box, and radiolist box.
irspider is a Linux-based IRC smartbot. It is very similar in functionality to a search engine on the Web. irspider goes out and spiders DCC offer bots that are in the same channel as itself, and stores tons of information on what those particular bots are offering. Users are then able to query irspider for matches against its database, or request a masslisting of everything that it knows about.
proxy-report.pl generates a list of requested server addresses (simplified URLs) from your Squid proxy server log files. Requests for each URL are summarized on a per day basis. This script can generate reports based on the IP of the user. It also automatically handles gzipped files. URL exclusion patterns are supported. A sample report is available on the home page.
emlog is a Linux kernel module that makes it easy to access the most recent (and only the most recent) output from a process. It works just like "tail -f" on a log file, except that the storage required never grows. This can be useful in embedded systems where there isn't enough memory or disk space for keeping complete log files, but the most recent debugging messages are sometimes needed.