Line 6 Makes a product or at least used to make a product called amp farm that gives you all kinds of amp models and effects. They still have the software listed on there website but the link took me to digidesigns web page so I am not sure if they still make the softwareor if digdesigns took over production.
They also have a product called the guitar port whick is a combination or hard ware and software and from the reviews I have read it appears to be an awesome product.
I have used amp farm and it rocks I havent had the oportunity to try guitarport but I am sure it is as good as any other Line 6 product and from waht I have seen it is about half the price of a pod..

Hope this helps
Al