Jurism is a variant of Zotero (but is a separate platform) that adds support for legal writing and multilingual research. Access Juris-M manual here: https://juris-m.readthedocs.io/en/latest/
Zotero is a free, open-source research tool that helps you collect, organize, and analyze research and share it in a variety of ways. Access tutorials here: https://www.zotero.org/support/