The Dryad Digital Repository is a curated resource that makes the data underlying scientific publications discoverable, freely reusable, and citable. Dryad provides a general-purpose home for a wide diversity of datatypes.
SHARE is a higher education initiative whose mission is to maximize research impact by making a comprehensive inventory of research widely discoverable, accessible, and reusable. To fulfill this mission SHARE is creating an openly available data set about research activities across their life cycle.
Note: Not all repositories necessarily take researcher-produced datasets where you can share your data. Moreover, not all repositories listed can ensure long-term preservation of your data; contact each one for more details.