List of openly available datasets
Neuroimaging
Cam-CAN (Cambridge Centre for Aging and Neuroscience large-scale data set)
Multimodal, multi-subject data set (EMEG and (f)MRI, famous/unfamiliar/scrambled faces)
BrainMap Project, for standardization, sharing, and meta-analysis of neuroimaging data (incl. ALE, see reference list for more resources)
CoCoMac Database, Collations of Connectivity data on the Macaque brain
Neurosynth (automated "meta-analysis" of fMRI data)
Studyforrest (publicly available neuroimaging data)
MEG-Sim (simulated MEG data)
Neural ElectroMagnetic Ontologies (NEMO, resources to support representation, classification, and meta-analysis of brain electromagnetic data)
multiBrain (A list of brain imaging datasets with multiple scans per subject.)