Mailing list management software from L-Soft international, Inc., Landover, MD (www.lsoft.com) that runs on Windows, Mac, OpenVMS, VM (mainframe) and various Unix machines. LISTSERV scans e-mail messages for the words "subscribe" and "unsubscribe" to automatically update the list. Virus protection is also provided. The LISTSERV program originated in France in 1986 by engineering student Eric Thomas, who went on to found the L-Soft company in 1994. See mailing list.