Zotero

Reviewed by Alexis Morain · Updated July 14, 2026

Zotero is an open-source reference manager: collect, organize and cite sources. Free, with paid cloud storage beyond a limit.

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SaaS Radar Review
8/10

The reference open-source reference manager, free and privacy-respecting, where only cloud storage beyond 300 MB is paid.

  • Free and open source
  • One-click reference capture
  • Paid cloud storage beyond 300 MB

Zotero is an open-source reference management tool, widely used in academia and research. It lets you collect, organize, annotate and cite sources (articles, books, web pages), with direct integration into word processors to generate bibliographies and citations in the desired styles.

What is Zotero used for?

Zotero is used to manage research documentation: capture a reference in one click from the browser, organize it into collections, add notes and PDFs, then insert citations and a bibliography into a document, in thousands of styles. It is a reference tool for students, researchers and writers, against competitors like Mendeley.

Zotero or Mendeley?

Against Mendeley, owned by Elsevier, Zotero bets on open source, independence and privacy. Both cover the same basic needs; Zotero appeals to those who prefer a free tool not backed by a commercial publisher.

How much does Zotero cost?

Zotero is free and open source, with no limit for managing references locally. Only cloud storage to sync your PDF files is paid beyond a free 300 MB, via annual storage subscriptions (around $20 to $120 a year by capacity).

Pros & Cons

What we love
  • Free and open source
  • One-click reference capture
  • Word processor integration
  • Privacy-respecting
What could be better
  • Paid cloud storage beyond 300 MB
  • Functional but plain interface
  • Sync to configure

Key features of Zotero

Reference collection

One-click capture from the browser

Organization

Collections, notes and PDFs

Citations

Bibliographies in desired styles

Integration

Word, LibreOffice and Google Docs

Zotero pricing

Zotero is free and open source: reference management, organization, notes and citation and bibliography generation carry no cost, with no limit locally. Only cloud storage, to sync PDF files across devices, becomes paid beyond a free 300 MB, via annual storage subscriptions (around $20 to $120 a year by capacity). Most uses fit within the free version.

Free plan / trial

Free and unlimited locally; 300 MB of cloud storage included.

Zotero

Unlimited reference management · Citations and bibliographies · 300 MB storage included

Free

Cloud storage

PDF synchronization · Capacity by subscription · Optional

~$20 to $120 per year

Pricing verified on July 14, 2026

Try Zotero

Who is Zotero for?

Best for

  • Students and researchers
  • Academic writing
  • Research document management

Not recommended for

  • Uses without a bibliography need
  • Very large PDF volumes without paid storage

Want to try Zotero?

Head to the official site and the current offer.

Visit Zotero

Frequently asked questions about Zotero

Is Zotero free?
Yes, Zotero is free and open source for managing references locally. Only cloud storage to sync PDFs beyond 300 MB is paid.
Zotero or Mendeley?
Zotero is open source, independent and privacy-respecting; Mendeley is owned by Elsevier. Both cover the same needs, Zotero appeals to open-source advocates.

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Tech sheet

Platforms
WindowsmacOSLinuxWebiOS
Integrations
Support
Documentation, Communauté
Data hosting
GDPR Compliance

Vendor

CompanyCorporation for Digital Scholarship
Founded2006

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