Moving Records from RefWorks into Zotero, Mendeley, EndNote
Log into RefWorks.
Go to References > Export > choose RefWorks Tagged Format > Export References.
Click on the link to the document created in Refworks (it will be a listing all the records you have for items in Refworks).
Highlight the document to copy the information.
Open Zotero. Go to File > Import from Clipboard
All your records from RefWorks will appear in Zotero. The migration moves the records for the items only. You will need to recreate any Folders - called Collections in Zotero - then drag and drop each item into the appropriate Collection file.
Open EndNote Basic
Moving Records into Zotero
Importing from Other Reference Managers [into Zotero]
Guide from Zotero; instructions for importing files from Mendeley, Endnote, Citavi, Microsoft Word Bibliography XML, plain text reference lists, Bib(La)TeX, JabRef, and other tools, such as Reference Manager, RefWorks, Papers, Google Scholar Library, ReadCube, etc.