A catalogue of databases, described according to the BioDBcore guidelines, along with the standards used within them; partly compiled with the support of Oxford University Press (NAR Database Issue and DATABASE Journal).
Dataverse is an open source web application to share, preserve, cite, explore, and analyze research data. It facilitates making data available to others, and allows you to replicate others' work more easily.
Mendeley Data is an open research data repository, where researchers can upload and share their research data. Datasets can be shared privately amongst individuals, as well as published to share with the world.