I was very surprised that no one had implemented one yet. I found an implementation for jQuery, YUI, and mooTools. I actually did find a decent implementation called protoGrowl, but it was much too overweight for what I needed since it was originally developed to be used with the Midgard CMS system.

In the end, I really liked the mooTools implementation and decided to try and port it to Prototype. Unfortunately, my Prototype 1.6 skills aren’t as solid as I would like so I sought out help online and came across Thomas Reynolds on gitHub. He agreed to help and so the project began. A few hours later we had the first working version of prototypeGrowl. After a nights rest and some more coding we have a pretty nice implementation of growl for prototype.

Check it out and feel free to fork the repository on gitHub and contribute any tweaks or updates you want.