A reference manager that collects sources from the web, stores them, and generates citations in whatever style you need. Zotero is free and open source; its paid element is optional online storage above the free allowance, which its own storage page prices. Because the library lives on your own machine, it works without a subscription and without sending your reading list anywhere, which is the reason many researchers choose it over commercial alternatives.

Frequently asked questions

What is Zotero?

A free, open-source reference manager. It saves sources as you browse, keeps PDFs alongside them, and produces citations and bibliographies in the style your work requires.

Who is it for?

Students, academics and anyone writing something that needs a bibliography. The learning cost is small and it replaces doing citations by hand, which is where the time saving actually shows.

Is Zotero free?

The application is free and open source. Online storage beyond the included allowance is the paid part, which Zotero prices per year on its own storage page rather than through a subscription to the software itself.

What should you watch?

Your library is local, so back it up. Syncing to the hosted storage is a convenience rather than a requirement, which is useful if you would rather your reading list stayed on your own machine.

Does it work with a word processor?

Yes. A plugin inserts citations as you write and builds the bibliography at the end, so changing citation style later reformats the document rather than requiring manual corrections throughout.

What it is good at

Collecting sources while reading

Saving a reference with one click, with the PDF attached, is what makes the bibliography manageable later rather than a chore at the end.

Generating citations and bibliographies

Producing a reference list in the required style is the task it removes entirely, including reformatting when a journal changes its requirements.

Organising a long project

Collections and tags keep a large reading set usable across months of work, which is where a folder of PDFs stops coping.

Pricing

The application is free and open source. Optional online storage above the included allowance is priced per year on the vendor site, so nothing needs to be paid to use it locally.

Alternatives

Mendeley — A comparable reference manager with a different owner and interface.
A citation feature inside a word processor — Fewer steps and no shared library.
A spreadsheet of references — Free, and it becomes unusable as the project grows.

What to check before you commit

Back up your library

Your references live on your machine. Export them somewhere safe before you need to, not after a disk fails.

Pick your citation style early

Switching styles later is possible, but reformatting a finished draft is wasted work you can avoid by setting the style at the start.