RefWorks is a web-based bibliography and database manager that allows you to create a personal, searchable database of citations. These citations can be formatted into your Microsoft Word documents as footnotes or a custom bibliography.
Because it is entirely web-based (i.e. the bibliographic records reside on the web, not on your computer), it gives you access to your bibliographies from Mac, PC, or UNIX, as long as it’s connected to the Internet. To be safe, be sure to backup files. RefWorks also offers a mobile platform.