UPnP-ContentDirectory is a Ruby based software that is currently undergoing development. It is only suitable for displaying images on a PlayStation 3. The software is available under the MIT License.
Overall, while still a work in progress, Ruby based UPnP-ContentDirectory has some promising features that may be worth exploring for those looking to view images on a PlayStation 3 device. Its development and licensing under the MIT License are also positive factors to consider.
Version 1.0: N/A