Apple has made available via the Apple Developer Connection site the Aperture 2.1 SDK. You'll need your ADC login info to grab the 596 kb disk image. But once you have it, you can use it to develop Export and Edit plug-ins. The download includes documentation to help you get off to a fast start.

To address a backward compatibility issue, Apple released PluginManager 1.7.3. PluginManager handles Apple and third-party filters used by Aperture as well as Final Cut Pro, Motion, Logic Studio. It also controls the filters of SDKs for Aperture and FCP. From...

There has been so much going on in the Aperture plugin world that I have been swamped trying to keep up with it all over at AperturePluggedIn.com. I have finally got a number of update posts up there, but there...