netadge - NetAdge is a mobile demand-side platform.
Survey Monkey - Create and publish online surveys in minutes, and view results graphically and in real time. SurveyMonkey provides free online questionnaire and survey software.
Persona.ly - Persona.ly offers game and app developers advanced tools for creating in-app advertising and acquiring quality users.
Typeform - Create beautiful, next-generation online forms with Typeform, the form & survey builder that makes asking questions easy & human on any device. Try it FREE!
LoopMe - LoopMe is a platform for all mobile video ad formats, covering pre-roll, HTML5 and VAST, including native and full-screen formats.
Google Forms - Simple web forms from Google.