ShoppingCart

Cookbook /
: SagePayPayment Provides SagePay (previously known as Protx) payment integration into PmWiki (Beta / RC (works for me))
: SimpleCart integration of simple javascript shopping cart with PayPal or Google checkout (stable)
: ZAP The ZAP forms processor handles data and file management, page insertions (forums, blogs), email & newsletters, e-commerce, and more. (Stable (relies on latest Beta version of PmWiki))