At DataCite we aim to be as open as possible, facilitating access to our resources from third parties. In this context we would like to present three external tools that might be useful.
When we want to assign a DOI to a new dataset it is sometimes complex to create the XML metadata required. Christian Pietsch, from the Bielefeld University Library (Germany) prototyped a DataCite metadata creator in a Python web framework:
https://github.com/pietsch/DataCite-Metadata-Creator-Django