hardmon is a hardware monitor which includes indicators for temperature, voltage, and fan speed. It displays these indicators in a graphical panel. The default configuration allows you to monitor up to 3 temperatures, 3 fan speeds, and 6 voltages. This tool is particularly useful for multi-processor systems. The look may be changed by configuring the panel's pixmap and by altering the indicator positions.
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.
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.
The tcp_wrappers package allows you to monitor and filter incoming requests for the SYSTAT, FINGER, FTP, TELNET, RLOGIN, RSH, EXEC, TFTP, TALK, and other network services. It provides tiny daemon wrapper programs that can be installed without any changes to existing software or to existing configuration files. The wrappers report the name of the client host and of the requested service. The wrappers do not exchange information with the client or server applications, and impose no overhead on the actual conversation between the client and server applications.
Telephone Control Daemon allows a user to dial a system and perform some predefined commands. It uses a voice modem (tested with Rockwell) to provide a DTMF-based interface to the user. It is useful for systems that only have a temporary Internet connection but may need to be connected at the demand of some remote user.