Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
inRiver - inRiver offers product information management solutions helping B2C and B2B multi-channel commerce tell perfect stories across channels.
Anchor CMS - Free and lightweight blogging system
Pimcore - Pimcore is an award-winning data management and customer experience management software.
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Webcollage - Webcollage is a SaaS solution enabling brands to manage rich product information and publish it in real time to retailer websites.