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The Cambridge Structural Database contains curated crystal-structure data for chemistry research.

The Global Terrestrial Network for Permafrost database contains metadata and quality-controlled measurements of permafrost temperatures and annual thaw depth.

The PlaBi database covers crop plants and Arabidopsis, including sequence data for protein-coding genes.

The Database of Religious History is an online encyclopedia covering quantitative and qualitative information on religious cultural history.

BUAP’s open access repository contains documents deposited by professors and researchers, with communities, collections, and search fields.

Otzar HaHochma's digital library contains Jewish books, including religious, research, and Hebrew-language works.

The SWISS-MODEL Repository contains annotated 3D protein structure models generated by a homology-modelling pipeline.

MovieLens 1M is a benchmark dataset containing one million movie ratings from 6,000 users.

The KDK Repository lets visitors browse research by year, subject, division, author, and participating social science institutes.

Producción Académica UCC lets visitors browse university research by year, author, subject, document type, and academic unit.

GREDOS lets visitors browse collections by date, author, subject, or title and provides repository policies and deposit guidance.

SEDICI is the institutional repository of the National University of La Plata, with search, collections, authors, and subject browsing.

J-STAGE provides access to full-text articles from Japanese academic journals and lists journal titles and subject areas.

Search the CEU Institutional Repository by title, subject, or author across research from CEU institutions.

ViralZone covers virus diversity with descriptions, images, and classifications of virus families and species.

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

The PolMine project shares parliamentary corpora and tools, including a recent release covering sessions of Germany's Bundestag.

Hradec Králové's open data catalog covers municipal and company records, with datasets grouped into topics such as government, education, and transport.

EELS DB collects electron energy loss spectroscopy and X-ray spectra, with records covering 43 elements.

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

The Canton of Basel-Landschaft’s open government data covers population, environment, economy, energy, mobility, health, education, and public finance.

INPTDAT provides access to research data in applied plasma physics and plasma medicine, covering materials, processes, and related fields.

This open data portal covers Grand Paris Seine Ouest and its eight member cities, including Meudon and Boulogne-Billancourt.

mzCloud offers a searchable spectral database with high-resolution mass spectra to help identify compounds in scientific analyses.