From the PLOS Everyone Blog:
Since 2015, the PLOS journals have maintained a list of repositories that we have determined to be suitable for authors depositing datasets that accompany PLOS articles. Selection of an appropriate repository allows researchers to maximize the visibility of their data while ensuring the data and related meta-data meet field-specific standards within their research community. We therefore encourage authors to deposit data to recommended field-specific, multi-disciplinary or institutional repositories when possible and put data in supporting information files only when a suitable repository is not available.
In support of Open Data Day 2018, we outline a set of criteria that explain how we assess repositories for inclusion in this list. These criteria follow FAIR principles on data openness, which we encourage repository owners to adhere to when setting up and managing their repositories. These criteria will also be posted to the PLOS websites in the near future.