What are some alternatives?
Readymag - Readymag is a comprehensive solution that allows you to design web publication, magazines, presentations, websites, and all the other publications.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
Zmags - Zmags provides solutions create and publish web experiences instantly.
Elium - Knowledge base for growing teams
SPIP - Système de Publication pour Internet
MangoApps - Founded in 2007, MangoSpring transforms the way teams work together.