There's also Levion - we don't have a documented API but we use Ruby on Rails that has JSON and XML out of the box. If there are interested users of our API, we

There's also Levion - we don't have a documented API but we use Ruby on Rails that has JSON and XML out of the box. If there are interested users of our API, we would like to hear from you. Send me a shout at jason at levion c o m