MultiTail lets you view one or multiple files like the original tail
program. The difference is that it creates multiple windows on your
console (with curses). It can also:

* Monitor wildcards: if another file matching the wildcard has a more
  recent modification date, it will automatically switch to that file.
  That way you can, for example, monitor a complete directory of files.
* Merge 2 or more logfiles.
* Use colors while displaying the logfiles (through regular
  expressions), for faster recognition of what is important and what not.
* Filter lines (again with regular expressions) and has interactive
  menus for editing given regular expressions and deleting and adding
  windows.
* Have windows with the output of shell scripts and other software. When
  viewing the output of external software, MultiTail can mimic the
  functionality of tools like 'watch' and such.

Homepage:
https://www.vanheusden.com/multitail/
