The Polljoy iOS SDK by Polljoy allows developers to integrate Polljoy's functions into their iOS apps written in Objective-C. Polljoy is an in-game survey and engagement service designed to add polls to games and solicit user feedback. Polls can be personalized with custom graphics, sounds, and virtual currencies in order to fit the developer's game.
GoPollGo is all about creating polls, from running them during presidential debates to coworkers polling each other on where to go for lunch. It has two APIs. One is a public read-only API free to anyone. The other is private, in beta that allows third parties to create polls. Clients such as ESPN, Netflix, Hotels.com, Robert Scoble, AppleInsider and The Weather Channel, use GoPollGo to track opinions on their brands and businesses.
PollDaddy, one of the most popular online poll and survey creation services, recently opened their new API to the public. The basic PollDaddy service provides free accounts for creating polls and surveys, or a Pro upgrade that eliminates sponsored links and allows higher numbers of survey responses than the free version. Now with the API, the core poll creation and reporting services are available to developers (details at our PollDaddy API profile).
Earlier this month, the Huffington Post announced the release of the HuffPost Pollster API, which provides developers programmatic access to the results of thousands of political opinion polls gathered and published by the Huffington Post.