AtroPIM - AtroPIM is a free, 100% open source and configurable PIM solution. It's easy to keep catalogs up to date, add new products or change existing ones, deliver your current product information across all channels.
Alkemics - Alkemics is a multi-channel product page management platform.
Pimberly - The most powerful Product Information Management platform on the planet.
inRiver - inRiver offers product information management solutions helping B2C and B2B multi-channel commerce tell perfect stories across channels.
Bluestone PIM - Sales depends on how well you present your product.
Akeneo - Akeneo is an open-source Product Information Management solution.