ProCarDB is a manually curated database of prokaryotic carotenoids. It contains more than 1800 entries and each entry provides important information about each carotenoid such as structure, carotenoid name, molecular weight, molecular formula, relevant molecular properties for identification and characterization, SMILES, InChI, InChIKey, IUPAC name, KEGG Id, PubChem Id, ChEBI id etc. ProCarDB includes manually extracted data from more than 2000 articles listed in Pubmed, Google Scholar, Science Direct and IJSEM. The database also provides information of the pathways involved in the synthesis of carotenoids, enzymes, encoding genes, bacterial species possessing carotenoids. This database is assisted with various online tools that allow the user to retrieve and analyze data, search for similar carotenoids and homologues genes/proteins.