Rayyan, founded in 2016 by Rayyan Systems Inc., targets one specific and demanding step in academic research most tools in this category don't address: title-and-abstract screening for systematic reviews, where a research team must sort through potentially thousands of papers to decide which meet defined inclusion criteria.
Its features reflect that specific workflow directly: automatic duplicate detection across imported records, blind collaborative screening where team members can't see each other's inclusion or exclusion decisions until reconciliation, and AI-assisted ranking that learns from a reviewer's early decisions to prioritize likely-relevant papers. This is a well-established tool specifically within medical and health-sciences systematic review communities, following PRISMA-style review protocols.
A free tier covers standard use, and paid plans start around $10 a month for more features. For a research team conducting a formal systematic review that needs to screen a large volume of papers collaboratively and defensibly, Rayyan's purpose-built screening workflow addresses that specific, protocol-driven task more directly than a general search or chat tool.
