Udemy is a new free platform for teaching courses online. Anyone can sign-up for Udemy and start creating courses in minutes. Udemy offers a variety of tools for delivering content online. Course creators can publish slideshows, publish videos, and create mash-ups of slideshows and videos synched together. Course creators can also hold live online sessions through Udemy's virtual classroom platform. I tried all of these tools earlier tonight and had them all working in less than ten minutes.
The video below provides an overview of Udemy's services.
Applications for Education
Udemy could be a good platform for creating and delivering professional development seminars. You could publish your content online where teachers can then access it at their convenience. If you then have teachers who would like some live instruction you can use Udemy's live virtual classroom space.