phpFlickr is a wrapper that allows developers to easily integrate the Flickr API's functions into their PHP applications. The wrapper covers functions for authentication, caching, uploading photos, and replacing photos.
Recognize.im recently announced that its image recognition API service has publicly launched. Until now, the Recognize.im API remained accessible on an invite only basis. Recognize.im hopes to tap into the quickly growing image recognition market and target mobile shopping apps and advertising campaigns. The platform recognizes real-world objects and redirects customers to take action after the customer takes a photo of the object with a smartphone.
The popular picture-sharing empire behind I Can Has Cheezburger lets you view, caption and share funny images. You can do this via its sites and, the now, thanks to their API, you can do it via code (technical details at our Cheezburger API profile).