I use a tiny little internal mac app to send myself custom desktop notifications in real time.
The app is hooked to a server which listens to HTTP (post) requests and notifies me in real time according to the parameters (custom title, message, icon, click-through link - all optional except for the title)
For example, I use it in one of my webapps to get notified every time a user signs up with a line of code.
What do you think about it?