AccuraCite checks every citation in your bibliography against 7 real academic databases — OpenAlex, Crossref, Semantic Scholar, PubMed, DBLP, arXiv, and CORE — catching fake citations, DOI mismatches, and even retracted papers before they end up in your work. In an independent benchmark against 933 citations (including ones deliberately built to be hard to catch), it caught 99.4% of fabricated references. Free tier available, no credit card required.