Zotero vs Mendeley: Which Reference Manager Should You Use?
Reviewed by Prof. Dr. Alexander Holtermann · Updated 16 October 2026 · 5 min read
Zotero is free, open source and works with Word, LibreOffice and Google Docs; Mendeley is free with an account and Word add-in. Both are fine for a thesis.
Key takeaways
- Both Zotero and Mendeley import references, store PDFs with annotations, insert citations in Word and generate reference lists in APA, Harvard, MLA and other styles.
- Zotero is free, open source and run by a non-profit; it integrates with Word, LibreOffice and Google Docs and runs on Windows, macOS and Linux.
- Mendeley is owned by the publisher Elsevier, requires an account and integrates with Word via the Mendeley Cite add-in.
- Zotero’s browser connector and open data formats are its main strengths; Mendeley’s strengths are its simple interface and integration with an account-based web library.
- The best tool is the one you use consistently from the first source onwards. Switching later is possible but costs time.
Zotero vs Mendeley: the short answer
“Zotero vs Mendeley” is one of the most frequent questions students ask at the start of a dissertation. The honest answer: both are good enough for any thesis. Both are free to use, both cite in thousands of styles and both generate a reference list automatically.
The practical differences are about openness, word processors, storage and how your data is held. If you want free, open-source software with Google Docs or LibreOffice support and no dependency on a publisher account, Zotero is the natural choice. If your lab, supervisor or course already uses Mendeley and you write in Word, Mendeley works fine. Check what your library recommends: support and workshops count.
Feature comparison
General overview as of late 2026; check the current details on the vendors’ websites.
| Feature | Zotero | Mendeley |
|---|---|---|
| Cost | Free, open source; optional paid cloud storage | Free with account; storage limit |
| Developer | Non-profit organisation | Elsevier (academic publisher) |
| Platforms | Windows, macOS, Linux, mobile apps, web | Desktop app, web, browser importer |
| Word | Yes (plugin) | Yes (Mendeley Cite add-in) |
| Google Docs | Yes | Check current status with vendor |
| LibreOffice | Yes | Check current status with vendor |
| Saving from the browser | Zotero Connector, recognises many sites and PDFs | Mendeley Web Importer |
| PDF reading and annotation | Built-in reader, annotations become notes | Built-in reader with highlights and notes |
| Citation styles | Thousands of CSL styles | Many CSL styles |
| Collaboration | Group libraries | Private groups |
| LaTeX / BibTeX | Export, plus popular community plugin for automatic .bib files | BibTeX export |
| Data ownership | Local database on your computer, optional sync | Account-based cloud library |
Where Zotero stands out
Openness and longevity. Zotero stores your library locally in an open format and syncs only if you want. Because it is open source and free, you can keep using it after graduation without any licence question.
Saving sources. The Zotero Connector for browsers recognises articles on journal sites, library catalogues, Google Scholar, newspapers and many other pages and saves metadata and, where available, the PDF.
Word processors. Zotero integrates with Word, LibreOffice Writer and Google Docs, which makes it flexible if you write collaboratively in Google Docs.
Extensibility. Community plugins add functions, for example automatic BibTeX export for LaTeX users. Free cloud storage for attachments is limited, but you can buy more or store PDFs locally.
Where Mendeley stands out
Simplicity. Mendeley’s interface is clean, and many users find it quick to learn. Your library lives in your account and is accessible from the web.
Reading. The PDF reader with highlights and notes is integrated into the library, which suits students who do most of their reading on screen.
Familiarity. Mendeley has been used in many labs for years, so supervisors and research groups sometimes standardise on it.
Points to consider: you need an Elsevier account; the older Mendeley Desktop was replaced by Mendeley Reference Manager, so tutorials from before the switch may show a different interface; integrations beyond Word should be checked with the vendor.
Which one for which student?
A quick guide based on common situations:
| Your situation | Sensible choice |
|---|---|
| You write in Google Docs or LibreOffice | Zotero |
| You use Linux | Zotero |
| You write in LaTeX/Overleaf | Zotero (with BibTeX export) or JabRef |
| Your lab or supervisor uses Mendeley groups | Mendeley |
| You want a tool independent of any publisher | Zotero |
| You already have a large Mendeley library and are happy | Stay with Mendeley |
How to switch from Mendeley to Zotero (or back)
Zotero can import a Mendeley library directly (including collections and, in many cases, annotations and PDFs); alternatively export from Mendeley as RIS or BibTeX. The other direction works via RIS or BibTeX export from Zotero.
Important: citations already inserted in your Word document are tied to the plugin that created them. After switching, you usually need to reinsert them. Therefore switch early, ideally before you start writing chapters. Keep a backup of your library and document in any case.
Tips for either tool
The tool matters less than how you use it.
- Check every imported reference immediately: author names, year, capitalisation, DOI, item type.
- Use one collection or folder per chapter and tags for themes.
- Choose the exact style your department requires (for example APA 7th edition, or the university’s own Harvard variant).
- Never edit the generated reference list by hand; fix the entry in the library instead.
- Before submission, compare the reference list with your in-text citations and your style guide.
Frequently asked questions
Is Zotero better than Mendeley?
Not in general. Zotero is open source, free, runs on Linux and supports Google Docs and LibreOffice; Mendeley is simple and account-based. Both handle a dissertation well.
Is Zotero completely free?
The software is free and open source. Syncing references is free; cloud storage for PDFs is free up to a limit, with optional paid storage. You can also keep PDFs locally.
Does Mendeley work with Google Docs?
Mendeley’s main citation tool is the Word add-in Mendeley Cite. Check the vendor’s current information for Google Docs support; Zotero offers a Google Docs integration.
Can I use Zotero with Overleaf or LaTeX?
Yes. Export your library or a collection as BibTeX (.bib) and use it in LaTeX; a popular community plugin keeps the .bib file updated automatically. Overleaf also offers reference manager integrations on some plans.
Can I transfer my Mendeley library to Zotero?
Yes. Zotero has a Mendeley import function, or you export as RIS/BibTeX. Citations in existing Word documents must usually be reinserted.
Sources and further reading
- Puckett, J. (2011). Zotero: A Guide for Librarians, Researchers and Educators. Association of College and Research Libraries.
- American Psychological Association. (2020). Publication Manual of the American Psychological Association (7th ed.).
- Zotero and Mendeley documentation (consulted 2026).
Your university’s examination regulations and style guide always take precedence.
Related articles
- Reference managers comparedZotero is free and open source, Mendeley free with an account, EndNote and RefWorks usually come via a university licence, JabRef suits LaTeX users.
- Reference listA reference list contains every source cited in your text; a bibliography may include works you consulted. APA says “References”, MLA “Works Cited”.
- APA 7th editionAPA 7 uses author–date citations: (Nguyen & Patel, 2021) or Nguyen and Patel (2021). Use “et al.” for three or more authors from the first citation.
- Literature searchDefine key concepts, list synonyms, combine them with AND/OR/NOT in library databases, follow citations (snowballing), and evaluate each source.
- Literature reviewA literature review synthesizes what research says about your topic, organized by themes, and shows the gap your study fills. It is not a list of summaries.