External tools and extensions to others tools have proven useful to Apache Web administrators as well.

The AOL Instant Messenger Unix client, TIK

The Unix client is a Tk/tcl application that is easy to plug functions into. There's a plug-in to fetch and display Apache's mod_status output automagically.

Cronolog

Provides configurable log file rotation by taking a log file path string and rotating piped in log data out to different files according to that string specification.

Analog (the log analysis tool)

There's a directive, APACHELOGFORMAT, that can read LogFormat strings to recognize the configurable log format defined for mod_log_config.