0.0.31 added man-page 0.0.26 added Nagios 3.0 support, stability fixes 0.0.19 stability and compilation fixes (it really doesn't need ncurses to compile) 0.0.17 soft errors can now be suppressed, "pending state" could cause a segfault 0.0.16 performance enhancement 0.0.15 nagtail can now also process nagios 1.0 statusfile as well as remote logfiles 0.0.13 fixed an occasional segfault caused by a double free 0.0.12 initial release
In this screendump nagtail is displayed in a MultiTail window.
You might be interested in CoffeeSaint: an application that shows the status of Nagios (version 1 up to 3 and the newer XI) on a screen. It can, if there are no errors, display a Webcam feed. If an error status occurs, it can play a sound. One can configure it to display certain errors/warnings always on top. It is remotely configurable via a built-in Web interface. NagIRCBot announces the Nagios status on an IRC channel. Nagcon: a console application interfacing to Nagios which gives you an overview of all services with troubled services. check_nagios_summary enables you to do perform distributed monitoring. NagTail is like tail on the Nagios status logfile.
Something quiet similar: nsc.