Logwatch is a modular log analyser that runs every night and mails you the results. It can also be run from command line.
The output is by service and you can limit the output to one particular service. The subscripts which are responsible for the output, mostly convert the raw log lines in structured format. Logwatch [...]

iptotal is yet another IP traffic monitor. It listens to a network interface in non-promiscuous mode, and measures IP bandwidth usage. After the specified number of seconds, the average throughput is printed at total, input and output usage.
The utility can be used to measure bandwidth usage without the need for an SNMP daemon. In combination [...]

There is yet another Ubuntu Mockup that has been causing some noise. this one is called “gelatin” and it is based on the “Clearlooks” engine. Looks OK in my ipinion, but apperantly alot of people seems to like it over at Ubuntu wiki and Digg.
What do you think?

Original Picture from: http://vdepizzol.wordpress.com/2008/01/02/gelatin/

Osiris is a Host Integrity Monitoring System that periodically monitors one or more hosts for change. It maintains detailed logs of changes to the file system, user and group lists, resident kernel modules, and more. In order to use Osiris, you have to have osirismd daemon running.
First we need to create Osiris certificate file using [...]