Reactome Biological Pathway Reference
Explore curated biological pathways, species and protein-to-pathway mappings. Cite Reactome. Research reference; do not infer clinical diagnosis or treatment. No API key or login required for these public read tools. Source: https://reactome.org/ContentService/
RCSB Protein Structure Explorer
Search experimentally determined protein structures, inspect entries and molecular entities. Cite RCSB PDB and original structures. Scientific reference, not clinical advice. No API key or login required for these public read tools. Source: https://data.rcsb.org/
Ensembl Gene & Genome Explorer
Look up genes, genomic sequences and database cross-references. Species and genome assembly context matter. Research reference, not clinical interpretation. No API key or login required for these public read tools. Source: https://rest.ensembl.org/
UniProt Protein Knowledgebase
Find protein function, sequences, taxonomy and proteomes. Preserve accessions and cite UniProt. Research reference; annotations may be predicted or unreviewed. No API key or login required for these public read tools. Source: https://www.uniprot.org/help/api_queries
PubChem Chemical Compound Reference
Resolve chemical names to CIDs and read properties, synonyms and descriptions. Research reference, not a clinical safety assessment. Below five requests per second; no bulk enumeration. No API key or login required for these public read tools. Source: https://pubchem.ncbi.nlm.nih.gov/docs/pug-rest
Wellcome History of Medicine Collection
Discover books, art and archives about health and medical history. Preserve source links and item licenses. Historical descriptions are research material, not clinical advice. No API key or login required for these public read tools. Source: https://developers.wellcomecollection.org/docs/catalogue
V&A Art, Fashion & Design Collection
Explore fashion, decorative arts and design objects. Preserve V&A links, attribution and per-image rights. Use small pages for interactive research. No API key or login required for these public read tools. Source: https://developers.vam.ac.uk/guide/v2/welcome.html
Metropolitan Museum Art & Images
Find artworks, artists and open-access images from The Met using the current paginated v1.1 search. Preserve object URLs and public-domain flags. Search reaches at most the first 10,000 matches; narrow queries for larger sets. No API key or login required. Source: https://metmuseum.github.io/
Open Technical Books & Textbooks
Discover open books with authors, publishers and source links. Search caps at 100 books; download links expire in two hours. Check each book's license. No API key or login required for these public read tools. Source: https://www.dbooks.org/api/
Free-to-Play PC & Browser Games
Discover free PC/browser games, system requirements and official game links. Credit FreeToGame and preserve game URLs. No API key or login required for these public read tools. Source: https://www.freetogame.com/api-doc
LibriVox Free Audiobooks
Find public-domain audiobooks, authors, chapters and listening links. Rights vary by country; credit LibriVox. Small pages only; no bulk harvesting. No API key or login required for these public read tools. Source: https://librivox.org/api/info