— Research Tool

Mendeley

Last updated July 16, 2026 · Reviewed by ToolForge Editorial

Reference manager and academic social network for organizing research and PDFs.

★ 4.3/5 · 6M+ researchers · Since 2008 · Free tier (2GB)

The reference manager with a built-in network

Mendeley combines a desktop PDF library, a citation plugin for Word/LibreOffice, and an academic social network where you can follow researchers and discover papers. Its PDF reader with highlighting and annotation sync has made it a staple for graduate students and lab groups.

Who it's for: Graduate students, academics, and lab teams who want a single place to read PDFs, cite, and discover related literature.

Key features

PDF PDF organizer & reader

Import, tag, and annotate PDFs; highlights and notes sync across devices.

Cite Citation plugin

One-click citations and bibliographies in 9,000+ styles inside Word and LibreOffice.

Importer Web importer

Save references and PDFs from your browser with the Mendeley Web Importer extension.

Network Research network

Follow researchers, join groups, and get paper recommendations from your library.

The honest take

✓ What works

  • Strong PDF reader with synced annotations
  • Huge academic social network for discovery
  • Free tier covers most students
  • Citation plugin is rock-solid in Word

✗ What doesn't

  • Desktop app feels dated vs newer tools
  • Storage limits bite on the free tier
  • Owned by Elsevier — some privacy concerns
  • Syncing can be flaky on poor connections

Verdict

Mendeley remains a safe default for students who live in PDFs and Word. If you prize open-source and extensibility, Zotero edges it; if you want the smoothest reading + discovery experience in one place, Mendeley still delivers. Free tier is enough to start.

💡 Transparency: This review contains affiliate links. If you sign up through our link, we may earn a commission at no cost to you. We only recommend tools we use ourselves. Full disclosure.

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