Figshare: Items can be sorted by Altmetric score and citations
Mendeley Data Monitor (Elsevier): Reporting tool indexes over 2000 international discipline- specific and general data repositories (UOulu has no subscription)
Crossref makes research outputs easy to find, cite, link, assess and reuse.
DataCite's mission is to be the world's leading provider of persistent identifiers for research. Through the portfolio of services, Datacite provides the means to create, find, cite, connect, and use research.