Sokratik is a new service for creating audio slideshows. To create a presentation on Sokratik you simply add a picture, video, and or text to each slide and when you're done adding slides you can record your voice over each one. Sokratik worked well in my first test but I was disappointed that I couldn't upload images. Images can only be added via URL which means that they have to be hosted online on a service like Flickr.
Applications for Education
Once Sokratik starts to support uploading images and improves sharing options, it could be a good, simple tool for creating audio slideshows to use as part of a flipped lesson.