openei.org
Research data portal for exploring engineering records, including recorded data.
Directory
Search the directory
Search published websites, apps and repositories.
ni-lgln-opengeodata.hub.arcgis.com
Open geodata portal of Lower Saxony in Germany.
openheritage3d.org
Research data portal for exploring ancient cultures records, including datasets.
openicpsr.org
Find and access economic policy, applied economics research data, with indexed dataset.
data.indy.gov
Browse public datasets, metadata and downloadable records in an open catalog.
openlandmap.org
Searchable repository for finding geography datasets and datasets.
openneuro.org
Find and access basic in biology and medicine research data, with indexed image.
opensupplyhub.org
Open data and supply chain mapping platform publishing supply chain data transparently and freely (with login).
opentopography.org
Browse research datasets and geospatial data related to geography.
opentrials.net
Find data collections, study records and related research documentation.
openworm.org
Searchable repository for finding basic in biology and medicine datasets and moving image.
catalog.opgc.uca.fr
Research data portal for exploring atmospheric records, including datasets.
emmaboda.se
Open data portal for searching and downloading public datasets.
actrec.gov.in
Research data portal for exploring basic in biology and medicine records, including datasets.
Research data portal for exploring biology records, including experimental data.
ordar.otelo.univ-lorraine.fr
Research data portal for exploring analytical chemistry records, including datasets.
data.oregon.gov
Browse government and civic datasets for Oregon, United States.
organic-chemistry.org
Searchable repository for finding chemistry datasets and datasets.
ortholugedb.ca
Searchable repository for finding basic in biology and medicine datasets and datasets.
orthomcl.org
Research data portal for exploring basic in biology and medicine records, including datasets.
ortolang.fr
Search humanities data collections and supporting dataset from FRA.
orust.se
Open data portal for searching and downloading public datasets.
osm-boundaries.com
OSM tool to extract boundaries from OSM database.
osnadata.ub.uni-osnabrueck.de
Browse research datasets and experimental data related to engineering.