What Mendeley is
Mendeley is a reference manager that stores papers, annotates PDFs, syncs across devices, and inserts citations into Word. It is free with a 2 GB cloud allowance, which is why it became the default in a great many institutions that never formally chose a reference manager at all.
One fact shapes everything below. Elsevier acquired Mendeley in 2013, and in 2022 retired the original Mendeley Desktop in favour of a ground-up rewrite called Mendeley Reference Manager. The rewrite is cleaner and more stable, but it shipped without several features long-time users depended on — most visibly the watched-folder and file-organisation machinery, and LibreOffice citation support. Anyone evaluating Mendeley today is evaluating that newer, narrower application, not the one that earned the reputation.
Why researchers use it
- A genuinely generous free tier — 2 GB is roughly seven times Zotero’s allowance, enough for most PhD libraries without paying anyone anything.
- Web, desktop, and tablet in sync — annotate a PDF on a tablet on the train, open it annotated at your desk. This is the smoothest part of the product.
- Mendeley Cite for Word — a modern add-in that works in desktop Word and Word on the web, without the fragile plumbing older tools rely on.
- Institutional presence — many universities run Mendeley Institutional Edition, which lifts the storage limit and gives you a support route that actually answers.
- Zero-friction onboarding — for a first-year student whose library is currently a Downloads folder, it is the shortest path to something organised.
Where it fits in a research workflow
Mendeley occupies the same slot as Zotero: between reading and writing, capturing references on one side and emitting citations on the other. The difference is at the boundaries.
Upstream, the Mendeley Web Importer handles publisher pages competently, and Elsevier-owned properties such as ScienceDirect and Scopus naturally behave well. Downstream the story narrows sharply. Word through Mendeley Cite is first class. LaTeX users get a BibTeX export that works but is not a live pipeline. There is no LibreOffice integration in the current app at all. If your writing ends in Overleaf or runs through Pandoc, you will be exporting .bib files by hand rather than getting the automatic export that Zotero’s Better BibTeX provides.
Getting started
Fifteen minutes — but settle the institutional question first.
- Ask your library whether your institution has Mendeley Institutional Edition. If it does, sign up through that route: more storage, and a support contact, for the same effort.
- Install Mendeley Reference Manager plus the Web Importer extension, then capture ten papers from your current project to test metadata quality on the journals you actually read.
- Install Mendeley Cite from the Word add-in store and insert a citation in a throwaway document before trusting it inside a chapter.
- The step people skip: run a full BibTeX export on day one and keep it. It is your proof that you can leave, and it takes two minutes while the library is still small.
Mendeley vs the alternatives
| Alternative | Does it better | Pick it if |
|---|---|---|
| Zotero | Open source, local-first, a real LaTeX pipeline, no publisher owns it | You want independence and a .bib file that maintains itself |
| EndNote | Very large libraries and journal submission output styles | You are in clinical research with a site licence already paid |
| JabRef | Plain-text .bib as the native format, versionable in Git | Your entire output is LaTeX |
| Paperpile | Google Docs integration and a markedly faster interface | You draft with co-authors in Google Docs |
Choose Mendeley when the storage allowance or an institutional licence genuinely decides it for you. Choose Zotero when the decision is actually yours.
Cost, licensing, and your data
Free with 2 GB of storage; paid tiers add capacity; Institutional Edition removes the ceiling and is frequently already in place. The software itself is proprietary and closed source.
The data question deserves a clear head. Elsevier is a commercial publisher whose business includes research analytics, and Mendeley is one of its windows into what researchers read. Nothing improper follows from that, but it is a governance fact rather than a conspiracy: your reading list and annotation activity sit with a company that also sells assessment products to your institution. For confidential, embargoed, or participant-identifying material, that is a conversation to have with your data steward before uploading rather than after.
The honest review
Strengths. Cross-device PDF annotation that simply works. Read on a tablet, mark up, open at your desk with every highlight in place — Mendeley does this more smoothly than any free competitor, and for a reading-heavy workflow it is a real reason to choose it.
Limitations. The 2022 rewrite is the central problem. Features that defined Mendeley Desktop — watched folders, automatic file organisation, LibreOffice citation support — did not survive the transition, and years later the replacement is still narrower than what it replaced. LaTeX support is export-only, with no equivalent of Better BibTeX’s automatic sync. Metadata extraction from PDFs needs more manual repair than Zotero’s. And a closed format owned by a publisher is the textbook definition of lock-in, even with a BibTeX escape hatch.
Verdict. A reasonable choice if your institution has standardised on it or the 2 GB allowance solves your storage problem outright. Not the one to pick with a free hand. The condition that flips it: if you write in LaTeX at all, Zotero plus Better BibTeX wins on every axis that matters.
.bib export you will re-export your bibliography before every compile, and the version in your final submission will eventually be a stale one. Use Zotero with Better BibTeX or JabRef instead. And regardless of manager, participant-identifying PDFs do not belong in a consumer cloud account.Common questions
Is Mendeley free?
Yes, with 2 GB of cloud storage on a personal account. Larger allowances are paid, and many universities hold an Institutional Edition licence that removes the limit — check with your library before paying anything yourself.
Does Mendeley work with LaTeX or BibTeX?
It exports .bib files, so LaTeX works, but only as a manual step. There is no equivalent of Zotero’s Better BibTeX auto-export, so nothing keeps your bibliography file in sync with your library.
What happened to Mendeley Desktop?
It was retired in 2022 and replaced by Mendeley Reference Manager, a rewritten application. Watched folders, automatic file organisation, and LibreOffice citation support did not carry over to the new app.