The Buddy Platform iOS SDK by Buddy Platform allows API interaction, providing resources to build requests, authenticate, parse responses, and save credentials. A getting started guide demonstrates how to install with CocoaPods and install from source to use the iOS SDK.
ProgrammableWeb's API Directory has a list of 62 real time APIs including the most popular: A tie between the Twitter Streaming API and Thrutu API. Real Time APIs can aid developers in producing applications pertaining to monitoring, travel, user verification, search, data validation and more.
Twitter recently added more data to each tweet it returns via the API. Now your applications can access the number of retweets, whether you have retweeted a tweet and additional information about the user who wrote the tweet. The new information used to require subsequent calls to the Twitter API, or perhaps looking up a cached value from your own database.
The internet is the perfect medium for matching supply with demand. You can find your next freelance job or, as Craigslist has been singled out for, find just about anything else (if you know the right euphemisms). Now, with Data Marketplace, you can request or provide datasets covering anything you can think of.