PhPepperShop
This German-only webshop is optimized to be as dynamic as possible (change one thing -> immediate effect on the whole shop). Features: Webinterface to administrate the shop, search engine (google like), SSL/TLS support, several VATs, payment institute interface, categories/subcategories, product picture (jpg/png/gif), automatic thumbnail creation with zoom capabilities, weight (shipping costs), weblink, variations, grouping of variations, options, textfields, shipping cost management, several types of payment supported, CRM, creditcard support, layout management, diagnostics, automatic installation, backup management, huge documentation, and much more.