The Urban Data Hub Team in Hamburg developed an Urban Data Platform Cockpit (available in German and English). It evaluates and visualises the content and usage statistics of the “Urban Data Platform Hamburg”. You can e.g. find out how many datasets for a specific topic are available or browse the newest datasets published. By the way: The map component is the Masterportal API, a very slim version of the Masterportal.
Press release (German): https://www.hamburg.de/pressearchiv-fhh/14481628/2020-10-22-bsw-lgv-cockpit/