Rayyan

What is Rayyan?

Rayyan is a tool for researchers and academics who need to conduct systematic literature reviews. It is built to make the review process efficient and collaborative, even when your team is distributed. With over 350,000 users in more than 180 countries, Rayyan uses AI for de-duplication and relevance ranking, making it accessible to students, librarians, researchers, and professionals. Membership options include free plans for early-career researchers and affordable paid options for professionals and students who want advanced tools.

Who created Rayyan?

Rayyan was created by a team including Hossam Hammady (Engineering lead), Marc Keylard (Global Partnerships), and Amin Shanaa (Head of Product). The company is based in Cambridge, Massachusetts, in the United States. Its goal is to make essential research tools available to everyone and help speed up scientific and medical discoveries globally.

What is Rayyan used for?

Rayyan supports the systematic review workflow:

• Systematic literature reviews: AI tools that understand language and help you work through reviews efficiently.
• AI assistance: AI-driven de-duplication and relevance ranking to speed up the review process.
• Teamwork: Remote collaboration for distributed research teams.
• Mobile access: A mobile app for working on reviews on the go, including offline.
• Support and training: Onboarding, training sessions, and priority support.
• Scale: Over 500 million reference articles already processed.
• Institutional assets: Helps build and maintain literature searches, systematic reviews, and full-text articles.
• Flexible plans: Free and paid membership options for individuals, teams, and organizations.

Who uses Rayyan?

Rayyan serves a broad academic audience — students, librarians, researchers, and other professionals — across more than 180 countries. It is designed to save researcher time for teams and organizations, making collaboration and systematic literature reviews easier for both early-career researchers and experienced professionals.