Today I found out that no Google Plus notifier yet existed for Mac, so I decided to make one. Sadly, I had no knowledge of Cocoa what-so-ever, so first I had to spend some time learning it.
Program is very likely to be buggy (as I’m a total Cocoa-noob) and I take absolutely no responsibility for any damages caused by this software. Use it at your own risk. The source is avalible on request.
You do not need to type in password or anything, but it requires you to be logged in to Google Plus. To close the program, go to the Terminal and type killall “G+ Notifier”. That is the hardcore and only way.
Download it here!
Credits to Sean McCabe for the icon.
REMARK: After posting this on a forum, a user pointed out that there already exists an app: Tab for Google+
UPDATE: Also check out the new updated version.