OpenNeuro

OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.

Use OpenNeuro when you need public brain imaging data that is organized around BIDS, visible through a dataset landing page, and downloadable for reuse. The strongest fit is reproducible neuroimaging work where the standard file layout matters as much as the data itself.

MRI, fMRI, EEG, MEG, iEEG, PET, behavioral data

OpenNeuro requires uploaded datasets to follow BIDS specifications, and upload finalization depends on resolving validator errors.

OpenNeuro upload guidance says uploaders need ethics permission and must handle defacing or explicit consent before public sharing.

OpenNeuro documents CLI, S3, DataLad, and git access paths because browser downloads are not always the best path for large datasets or poor connections.

OpenNeuro git access uses git-annex for data objects, so users may need DataLad or git-annex commands to retrieve annexed file content.