The Best SDAC Alternatives in 2026

NASA’s Solar Dynamics Observatory provides solar imagery and data from instruments studying the Sun’s atmosphere.

The Korea Sequence Read Archive stores raw sequencing data and alignment information and offers a cloud-based analysis service.

The Kyoto center provides geomagnetic observatory data and indices through downloads, APIs, and in-browser plots.

The Astronomical Data Archives Center at Japan's National Astronomical Observatory provides astronomy archive services.

Browse data resources in the Coherent X-ray Imaging Data Bank, a repository focused on coherent X-ray imaging research.

MAST archives astronomical datasets from missions including Hubble, Kepler and TESS across optical, ultraviolet and near-infrared wavelengths.

Explore analytical data from astromaterials samples in the Astromaterials Data System archive.

InnateDB catalogs genes, proteins, experimentally verified interactions, and pathways involved in innate immune responses to infection.

Reactome is a pathway database with tools for visualizing, interpreting, and analyzing pathway knowledge.

The OpenWorm project is an open-source effort to create a computer model of the C. elegans nematode.

The Leibniz-FMP Screening Unit provides biochemical and cell-based high-throughput screening using compound collections.

IERS provides data on Earth rotation, reference systems, and geophysical fluids, with models, standards, and current bulletins.

NASA’s Infrared Science Archive curates science products from infrared and submillimeter missions, with catalog and contributed dataset search.

The Moscow center provides data on geomagnetic variations, ionospheric phenomena, solar activity, and cosmic rays.

THEMIS shares mission data, software, publications, and research on the history of events and macroscale interactions during substorms.

The Earth Orientation Center provides Earth orientation time series, reference series, bulletins, and related analysis resources.

The Madrigal Database manages and serves archival and real-time data from upper-atmosphere science instruments in multiple formats.

The UK Office for National Statistics produces official statistics and serves as the country’s national statistical institute.

IRIS offers public access to materials, data, and analysis tools for research on language learning, multilingualism, and language use.

The Estonian Social Science Data Archive provides online data search and analysis, with thematic collections covering social research.

BAMF’s research data center provides migration and integration data for research, including register and survey data.

DARTS is JAXA’s space science data archive, covering fields including astronomy, solar physics, lunar and planetary science, and microgravity.

SILSO preserves and distributes the international sunspot number, with current and historical solar observation data.

The Leibniz Institute for Solar Physics data centre stores and manages open solar observations and magnetohydrodynamic simulations.