The Pennsieve platform provides an local application that manages large uploads, manifest synchronization and acts as an intermediary between the various clients and the Pennsieve servers. The Pennsieve-agent project provides both this application and the Command Line Interface to the Pennsieve platform.
DOI Service which handles all interactions with DataCite to create/manage DOIs for public datasets. This service is not public and used by the Pennsieve API, and Pennsieve Discover Services.