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Citation tools (also called bibliographic management tools or citation managers) help you organize, manage and format citations for your research.


EndNote 21



Free for Duke affiliates (download) Free for Duke students, faculty, staff, & alumni (more info) Free for everyone (download)
Access Type
Desktop application with basic web version for syncing and sharing Web-only Desktop application with full web version
Bibliographic Styles
Endnote Output Styles RefWorks Output Styles Zotero Output Styles
Word processor integration
  • MS Word
  • Libre Office
  • Google Docs
  • Google Docs
  • MS Word
  • Libre Office
  • Google Docs
  • Neo Office
Duplicate detection
User can identify fields, Requires comparison Requires comparison Merges duplicates
Storage space
Unlimited reference and attachment storage Unlimited reference storage; 20 MB for attachments 300 MB Free; 2 GB $20/year; 6 GB $60/year; Unlimited $120/year
Mobile apps or mobile optimized web interfaces
Yes—iOS only Yes Some community-developed apps are compatible
Support for collaboration
Shared libraries through EndNote web, which is not as fully featured as the desktop application Easy for groups at the same institution, not supported across institutions Excellent
pdf annotation
Yes Yes No
Non-traditional formats and unpublished works
Yes Yes Yes
Global find and replace
Yes Limited No
Ability to work offline
Using desktop application No Using desktop application
Tool-specific features
Find full-text feature; authenticate through library Open source community; Active, crowd-sourced support forums Many language interfaces: Chinese, English, French, German, Italian, Japanese, Korean, Spanish
Availability after Duke
At cost Alumni access Free