BBS: A Documentary - Information about the film released in 2005. Includes details of research, a list of interviews, trailers, reviews, and an online ordering facility.
The BBS Corner - Source of information for both the BBS Sysop and the BBS User. Links to 3rd party software and primary software developers.
BBS Promotions - Provides a resource describing the what, when, where, who, why and how of BBSing.
BBS Xchange - Banner exchange for BBS-related sites.
BBSing.com - Presents the history of these systems and a global explanation of the way they work. Includes a large collection of links.
Official Intelec Home Page - The official Intelec Network Home Page. Intelec is an international BBS echomail network.
Wikipedia.org: BBS Systems - Encyclopedia article that gives an overview of these systems, their history and a brief presentation of their content, along with links to more specialized articles.