netadge - NetAdge is a mobile demand-side platform.
Caption This - Create a smart caption for your photo in a second!
Persona.ly - Persona.ly offers game and app developers advanced tools for creating in-app advertising and acquiring quality users.
Quik by GoPro - Easiest way to create awesome videos
LoopMe - LoopMe is a platform for all mobile video ad formats, covering pre-roll, HTML5 and VAST, including native and full-screen formats.
MotionDen - Free online animated video maker