| EndNote Desktop | EndNote Web | Mendeley | Zotero | |
|---|---|---|---|---|
| Cost | Available to all faculty, staff, graduate, and medical students via CIS. Endnote from CIS | Free; upgraded version available free to Brown users via Web of Science. SeeEndNote Online. | Free (additional cost for more storage and group functionality available from Mendeley) | Free and open source. |
| System requirements | Windows 7 and above, MacOS 10.10 and above, more details from EndNote | Windows 2007 or later, Mac OS X 10.6 or later, more details from EndNote | Windows 7 or later, Mac OS 10.10 and above, and Linux, more details from Mendeley | Windows XP SP2 or later, MacOS 10.9 or later, and Linux, more details from Zotero |
| Where data is stored | Computer | Web | Computer with web based syncing | Computer with optional web based syncing |
| Work offline | Yes | No | Yes | Yes |
| Work from multiple computers | Must sync with EndNote web | Yes | Yes | Yes |
| Word Processors | MS Word 2007 and above, Word for Mac 2011 and above, Google Docs | MS Word 2007 or later, Microsoft Word 2008 SP1/2011 plug-in for Macs, Google Docs | MS Word, Libre Office, BibTex export for use with LaTex | MS Word 2003-2016, Word for Mac 2004-2016, Google Docs |
| Mobile app | iPad app | No | iPad/iPhone/Adroid apps | iOS and Android apps |
| Share library | Share entire library (references, PDFs, annotations) with up to 100 EndNote users | Share with other EndNote Web users. All users can edit shared groups, but cannot share file attachments | Yes | Yes |
| Storage size | Unlimited | 2 GB free | 2 GB free, $ for more storage | Unlimited |
| Number of reference types | 50 | 51 | 20 | 38 |
| Import citation information from web | No | Yes, with bookmarklet | Yes, with a bookmark for a limited number of sites (mostly publishers or databases) | Yes |
| Import citation from library catalog | Yes | Yes | Yes | Yes |
| Import citation from library databases | Yes | Yes | Yes | Yes |
| Search database/catalog from within program | Yes | Yes | Catalog only | No |
| Retrieve citation information from pdf | Yes, from DOI or PubMed ID fields | No | Yes - extracted information from PDF, DOI, PubMed and Mendeley database | Yes - uses DOI, extracted information from PDF or Google Scholar |
| Global find/replace editing | Yes | Yes | No | No |
| Field searching | Yes, any field | No - searches entire record | Yes, author, title, publication name, year & notes fields | Yes, any field |
| Duplicate detection | Yes, able to modify fields to use for deduplication | Yes from same database, but will not usually recognize duplicates from different databases | Yes | Yes |
| Add notes to references | Yes, use notes field | Yes, use notes field | Yes, use notes tab in desktop version | Yes, attached to references or as standalone notes |
| Spell check | Yes | No | No | No |
| Attach pdfs | Yes with option to attach automatically | No | Yes, and can highlight and annotate PDFs | Yes, with option to attach automatically |
| Search for and attach PDFs | Yes | No | Yes | Yes |
| Annotate pdfs | Yes | No | Yes | Yes |
| Search attached pdfs | Yes | No | Yes | No |
| Create bibliography with different styles | Yes | Yes | Yes | Yes, limited default number, others download from Zotero |
| Edit output style | Yes | No | No | Yes, but very difficult |
| Online Tutorials & Videos | EndNote Training Channel | EndNote Training Channel | Mendeley Videos & Tutorials | Zotero Tutorials |
These aren't your only options for citation managers; there are other free programs such as JabRef, and subscription programs like Papers.
To learn more about the strengths and weaknesses of these products, consult the following comparison charts:
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