Readymag - Readymag is a design toolkit that helps create immersive digital experiences without developers in days, not weeks.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
MadCap Flare - Documentation for Any Audience, Language or Format
Textpattern - Textpattern is an elegant content management system that is free, open source software.
Publitas.com - Publitas helps you to drive more visitors to your online store by publishing catalogs online.
TYPO3 - TYPO3.com - Infos, SLAs, Extended Support Versions and more