APPlyzer - Professional rankings & keywords for app developers, marketers and publishers.
Content Marketing Stack - A curated directory of content marketing resources
Segment Sources - Load CRM, billing, and other cloud data to your Warehouse
The Influencer Marketing Stack - Free resources to launch a killer campaign
App Annie - App Annie is a marketing analytics tool available for apps of all kinds. With App Annie, you can track sales, traffic, and a variety of other factors pertinent to monitoring an app's trajectory.
Marketing Examples - A gallery of real world marketing case studies. Updated every day.