Magmi
Magento Magmi Extension for bulk Product Importing, including categories, custom options, configurable products and all other Magento product data imports.

Magento: Importing Categories, Multiple Images & Product Attributes
November 30, 2012 Category: Ecommerce, Magento

Magento: Import Products Fast via Magmi, a Free Product Import Tool
November 16, 2012 Category: Ecommerce, Magento