XP Notifier will log a message to a new window (or optionally your chat window) whenever you receive character XP, tradeskill, or other skill XP. The chat messages are considerably cleaner than insMobs2Level (or they are to me, anyway -- I'm very particular about formatting and usability). Additionally, the colors and which notifiers are enabled are all configurable and the add-on supports English, French, and German, although feel free to yell at me if I've got the translations wrong -- I only speak English personally.
Version 1.4.6 released 6/6/2014
Enjoy.
