Zotero

Featured

Free open-source reference manager with browser extension, annotations, and Word integration.

Best for: Completely free and open source Not ideal for: Limited free cloud storage
Price Free
Free plan Yes
For Researchers
Level Beginner
Updated Mar 2026
Category AI Research
01

Why choose Zotero

Free, open-source reference management software. Collects, organizes, annotates, cites, and shares research. Browser extension captures references in one click. Syncs across devices and integrates with Word, LibreOffice, and Google Docs.

  • +Completely free and open source
  • +Excellent browser extension
  • +Large plugin ecosystem
  • +Active community
02

Where it falls short

  • Limited free cloud storage
  • UI feels dated
  • PDF reader less advanced than alternatives
  • Sync can be slow
03

Best for these users

👤
Target audience
Researchers, academics, knowledge workers
📌
Best for
Completely free and open source
Skip if you need
Limited free cloud storage
04

Pricing overview

Free Free plan: Yes

Free and open source. Paid cloud storage starts at $20/year for 2GB.

Check current pricing →
05

Key features

Reference management
Browser extension
PDF annotations
Citation generation
Word/Docs integration
Group libraries
07

Alternatives to Zotero

EndNote

Professional reference manager by Clarivate with Web of Science and Word integration.

Mendeley

Elsevier reference manager with social networking, PDF management, and collaboration.

freemium Compare →
Paperpile

Modern reference manager with deep Google Workspace and Google Docs integration.

ReadCube Papers

Modern reference manager with enhanced PDF reader, AI recommendations, and cloud sync.

freemium Compare →
See all alternatives →
08

Related comparisons

09

The verdict

Zotero Free

Zotero is a solid choice for researchers who need completely free and open source. At free, it delivers good value. Main caveat: limited free cloud storage. Compare with alternatives before committing.