Pittsburgh: Citation Styles
Free Citation Management Software
Mendeley or Zotero, which one is right for you? These two tools are very similar, and, for the most part, they function in the same way. Both have basic versions that are available for free, but you can pay for additional storage (both) and the ability to create more private groups (Mendeley). For most people, the free basic versions are sufficient.
There are a few benefits and drawbacks to each that might make you more inclined to choose one over the other:
Lastly, if you plan to take advantage of the private groups features of these tools, you’ll want to pick whichever one your colleagues are using.