i need a application that support marketplace that allows sell, buy digital products and physical supplies, would you recommend any script or company for this? Also, anyone uses ubercart/ drupal. I heard they have relevant modules to support this? Is the application good, reliable? Does it comes with SEO/ security features?
Have a look at these as well
http://www.bigwebmaster.com/PHP/Scripts_and_Programs/E-Commerce/
http://www.cubecart.com/
virtuemart
plus see this as well
http://www.designer-daily.com/22-ecommerce-platforms-to-sell-your-products-online-4957
i hope these helps