Checkin.to collects public checkins from foursquare and gowalla in real-time at a rate of 250-400 per minute. Over 65 million checkins (and counting) have been added to our database. The interface is currently heat map style visualization of activity with detail on most active locations in a given area, who’s checked into where, and what they’re saying about it within the past 4 hours. There’s a lot more currently in development.
TweetPulse is a real-time “macro-analytics” platform for twitter. It uses the streaming API to aggregate system-wide trends on usage, specifically focusing on links. TweetPulse follows each short url posted on twitter to find the true destination and learn where people are actually linking to. For example, every short url (such as http://bit.ly/bQXgDG) would be resolve and aggregated as the full URL. The most tweeted urls, domains, shortening services, and clients are aggregated on a minute-by-minute granularity. The number of links collected is limited by twitter’s streaming API limit which was 3000 tweets per minute. The statistics would be in near real-time, averaging 5 seconds from the timestamp of the tweet until it became part of the aggregated statistics in the TweetPulse database. Ultimately TweetPulse was shut down due to hardware costs and lack of a clear commercial path.
Flickr doesn’t offer a real streaming API. PyFlickrStreamr provides a continuous, blocking python interface for streaming Flickr photos in near real-time. It is a wrapper around the Flickr photos.getRecent polling API.
A project from Startup Weekend August 2010. A mobile application for finding and offering ride shares.