Note: this post is from 2007, outbound links may be broken.
FXpansion updates Orca to v1.1 (and releases AU and RTAS versions)
Based on detailed and accurate models of analogue synthesizer circuits and components, ORCA excels at deep, squelchy basses and thick unison leads.
The latest version has a few bugfixes and you won’t need one of FXpansion’s adapters in order to run it in non-VST hosts anymore since AU and RTAS versions of Orca are now also available.
You’ll need to be a registered user to download Orca, but if you don’t have an account yet you can just sign up at no cost.