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.

Profile Hopper - Chrome Extension to Growth Hack LinkedIn

AppFollow - AppFollow is an integrated solution that makes monitoring, analyzing, and elevating your app's reputation easy.

LeadBring - Automate your LinkedIn workflow

Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.

Marketing for Startups - 47 practical tactics to get customers and achieve hockey stick growth.