One of the issues with BuddyPress is that notifications are not “Live”, in other words, in order to see if you have any notifications, you need to refresh your web page, this detracts from the dynamism of the site. Eonet Live Notifications fixes this by introducing a live notification in the form of a pop-up that shows up in the bottom right corner of the page, informing you that you have a new notification and providing a click link to view that item.
One of the issues with BuddyPress notifications is that they do not update unless you refresh the page you are viewing, this means that unless you are actively browsing the site then you will not get an on-screen notification. BuddyPress Live Notification fixes that and allows a new notification to appear on the screen without that page refresh.
By default, BuddyPress does not inform the poster when someone Favorites their content, this plugin adds that notification, so members know when people like their content.
BuddyPress Desktop Notification is a simple plugin that provides a desktop alert for any BuddyPress notifications that would normally be pretty much unnoticeable when only displayed in the site tool bar.