I stumbled upon Feedzirra but it seems that isn't a Rails gem, but rather just a Ruby gem.
Does anyone know of any good ones for Rails 3 that are still being supported?
Thanks.
I don't think there are any gems for feed parsing that are specific to Rails... I'd suggest just checking out Ruby Toolbox to see what's common and available.
And if you end up choosing Feedzirra, here's a Railscast for it. A little old, but it can still be used in Rails 3.