Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System, Win32, image buffers, and PostScript, PDF, and SVG file output. Experimental backends include OpenGL (through glitz), Quartz, and XCB.
If you dont already know what it is, you might be wondering "What is Flickr?", well Flickr.com is a really cool community based Photo sharing site. They have made it easy for programmers to enhance and extend the features of the site via an API. Here are