I use pidgin as my centralized message application (Google Hangout, Jabber, ICQ, …) and also to get messages from freenode IRC.
But there is an issue with #IRC support on pidgin: I don’t know when someone posted a new message in the channel (#nuttx channel of course).
Then search about it a found a solution here:
There is a program called pidgin-irc-notifications that helps:
Note: I need to install pynotify first:
$ sudo pip install py-notify