What are some alternatives?
uberflip - Organize and Centralize ALL of your Content in minutes
Contentools - Contentools is a content marketing automation platform to centralize, streamline and manage content creation and distribution.
Content Marketing Stack - A curated directory of content marketing resources
CoSchedule - CoSchedule is the #1 marketing calendar that helps you stay organized and get sh*t done. Plan, produce, publish and promote your content.
EngageCamp - Free marketing content hub
Embedly - Embedly helps publishers and consumers manage embed codes from websites and APIs.