Notiffany is a notification library supporting popular notifiers, such as:
Growl, libnotify, TMux, Emacs, rb-notifu, notifysend, gntp, TerminalNotifier.

Features:
- most popular notification libraries supported
- easy to override options at any level (new(), notify())
- using multiple notifiers simultaneously
- child processes reuse same configuration

WWW: https://github.com/guard/notiffany