We index 300 million papers. Here's what that covers.

If you can't find a paper, it might as well not exist. That's the practical reality of research — nobody has time to check five different databases hoping one of them indexed the study they need.

We pull from every major scholarly source: journals, preprints, conference proceedings, theses, datasets. Over 300 million records, growing daily. The goal is simple — if it's been published somewhere, you should be able to find it here, regardless of discipline or language.

Sources and coverage

• Peer-reviewed journals across all disciplines — biology, physics, medicine, engineering, social sciences, humanities.
• Preprints from arXiv, bioRxiv, medRxiv, SSRN, ChemRxiv, EarthArXiv.
• Open-access full-text from PubMed Central, Europe PMC, DOAJ journals.
• Conference proceedings from ACM, IEEE, Springer, and major academic publishers.
• Citation graphs linking papers across decades — who cites whom, and in what context.
• Author, institution, and journal profiles from the OpenAlex knowledge graph.

Updated daily

Our ingestion pipeline runs continuously, pulling new records from OpenAlex, CrossRef, PubMed, and direct publisher feeds. When a preprint drops on bioRxiv in the morning, it's usually in our index by the afternoon. No waiting days or weeks.

Coverage matters because research questions don't stay inside one field. A bioinformatics question might need papers from both biology and computer science journals. A public health question might span epidemiology, economics, and policy. If your search tool only covers one discipline, it's already failing you.