current Rails 3 engines

Hi,

I'm working on a Rails 3 engine and it'd be useful if I could find
some others to look at. I've googled for it, etc., but because Rails 3
is rather new I'm not finding results. Can anyone suggest one?

Regards,
Nicholas Faiz

I've found this - http://github.com/jrwest/authr3 . It'd be great if
people could mention more.