EndNote: The most well-known reference manager, $$
Compatibility: Mac and Windows
Current version: 20
Integrates with Microsoft Word using Cite While You Write (CWYW). Will integrate with Apple Pages as well.
Current prices as of 1/25/21 (and subject to change). UCSF faculty and staff $220.926, Students $114.39. Upgrade to version 20 for those that own earlier versions $99.00 for all groups. More information at https://ucsf.onthehub.com/WebStore/Welcome.aspx ). For perspective: Non-educational list price is ~$250.
There is a one-month free trial (http://endnote.com/downloads)
There is a limited function online version for free at: http://endnote.com/product-details/basic