You can use Zotero and Juris-M on Mac, Windows and Linux.
How to Install:
Go to Linux installation tips opens new window.
Zotero and Juris-M searches the citations and will also search the fulltext of pdf attachments Go to searching (Zotero Documentation) opens new window.
In the toolbar of your Internet Browser, select the Juris-M connector (M icon) or the Zotero connector in the toolbar to automatically add references to Juris-M or Zotero, respectively.
But references from Lexis and Westlaw must be added manually.
Zotero and Juris-M create a library of citations and attached documents. You can organize your citations into different collections (folders), similar to creating playlists in iTunes. With saved searches, you can create smart collections that automatically fill with relevant materials as you add them to your library.
You can also assign tags to your library items.
Juris-M does the best job of on Bluebook Law Review citations of any reference management software tested. See Comparison chart. But it is NOT perfect, so be sure to double check your citations.
Zotero formats a paper from a conference better than many other reference managers. Often in the reference section of a paper, citation styles format a paper published in conference proceedings differently than an unpublished paper. There are additional fields that are used by Zotero that provide better support for conference papers.
Zotero has a filing date field as well as an issued date. This enables proper formatting of patents in particular citation styles, such as Chicago style that requires both. Some reference managers couldn't format the reference this properly in this case.