open source e-commerce

Does the Lisp universe have any open source projects that are greatly suitable to e-commerce? Like, possibly, Lisp's answer to Python's Zope or Plone. This would be for a subscription based web service, i.e. people would sign up and pay by the month. I don't want to talk in any greater detail about the project than that.

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Cheers,                     www.indiegamedesign.com
Brandon Van Every           Seattle, WA

Taking risk where others will not.
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