Sensor Tower - Sensor Tower is a platform for app store optimization and app industry intelligence.
DevMate - The ultimate tool to distribute Mac apps
42matters - 42matters offers top-notch app market data and audience data that helps you to build your business around mobile. All mobile data is easily accessible via our REST API and easy to use Explorer.
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.
Mobile Action - Mobile Data Intelligence & Actionable Insights.
Pathmatics - Pathmatics provides actionable display and mobile intelligence to many brands, agencies, publishers, and advertisers.