A program which lets you view several files at once (like the original tail) in a windowed terminal-window (with ncurses). Colors can be used to emphasize lines.
This tool merges two or more logfiles into one. For this, it looks at the timestamp on every line. Logfiles must be in the format as generated by syslog. The program isn't "language-safe", so if the month-field is in a language different from English, it's not going to work. multitail can do all of this in realtime.
AccTail shows all processes that have exited together with all its resource usages.