Spire is easy to set up and requires users to connect to a proxy server in order for the various commands to be answered by Apple's pocket slave. It was only a matter of time before more Siri alternatives became available and a Vietnamese Dev Team has produced a more advanced tool which goes by the name of Sara. This free voice recognition utility takes things a little further than merely setting reminders or driving users crazy with nonsensical conversation and it also appears to be much more versatile.
It has been described by its creators as having an open brain allowing those in the know to create plugins for special commands. Right now the feature set is still impressive and you can scan barcodes or QR codes. The most encouraging thing about Sara is that is works in a variety of countries and it has 37 languages. If you want to get your hands on Sara you will need to have a jailbroken iPhone and you will find it in Cydia.