The foursquare API
The foursquare API enables developers to build applications that interact with the foursquare platform. You can use the API to create new ways to check-in to foursquare or visualize the data generated by the foursquare community. Our API is still a work in progress and we look forward to your feedback and suggestions!
App Gallery
Take a look at what others have already built using our API. If you've built or seen something we haven't featured here, let us know!
foursquare for Android
Open-source foursquare client for Android devices (by Joe LaPenna, Chris Brummel, Brad Root, Darrel Herbst)
SocialGreat
Tracking venue trends and popularity based on foursquare checkins (by Bill Piel, Jon Steinberg, Sam Lessin)
Layar
Layar is an augmented reality browser that can overlay foursquare data on top of a display of the physical world (by Johannes la Poutré and Johan Schaap)
MobZombies
Location-based game that pits you against zombie hordes generated by foursquare checkin data (by Will Carter)
Yipit
Find nearby sales and special deals based on your foursquare checkins (by Vinicius Vacanti and Jim Moran)
Last Night's Checkins
Create a diary of stories based on your foursquare checkin history (by Doug Pfeffer)
BlackBook Guides for iPhone
Check into foursquare directly using the BlackBook Guides app
Where Do You Go
Visualize your foursquare check-ins as a heat map and share the places you go (by Steven Lehrburger)
photocheck.in
photocheck.in allows you to check into a place by simply emailing in a photo taken on an iPhone or Android. It's like Twitpic for foursquare. (by Jon Steinberg)
PlaceWidget
Add a foursquare venue widget to your website to show people and tips at your place. (by Brad Kellett)
foursquare for Palm
Open-source foursquare client for Palm WebOS devices (by Andrew Walpole, Christopher Van Buskirk, and Geoff Gauchet)
Foodspotting for iPhone
Foodspotting makes it easy to post foods you've tried and love – now you can check into places from the app too!
