Zotero is a free, web-based citation manager that collects, organizes, cites, and shares citations. Citations can be directly transferred from select databases (Web of Science, PubMed, Library catalog, etc), select websites, imported from saved (exported) records, or entered individually. Citations can be saved with cloud storage though an online library account.
Zotero can be accessed from any computer with internet access.
http://www.zotero.org/