Hotline

Major Mac Backup - Offers archiving and backup services on Hotline, Carracho, and KDX servers, with a particular focus on Macintosh users.
http://mmb.kicks-ass.net/

Tracker-Tracker for Hotline and Carracho - Offers an up-to-date list of Hotline trackers with their status and the number of servers they are tracking, a hotline server description search engine and a hotline file search engine.
http://www.tracker-tracker.com/

VivaHX - News, features, guides and reviews related to Hotline.
http://www.vivahx.com/

Hotline to the Underground - Salon.com 21st feature that explores the culture of the Hotline community. <small>(February 24, 1999)</small>
http://archive.salon.com/21st/feature/1999/02/24feature.html

Hotline Mailing List Archives - Archive of the Hotline Mailing List from the early days of Hotline development.
http://www.mia.net/domains/hotline/

Hotline's Civil War - Salon.com 21st feature that outlines the legal battles that have ensued between Hotline Communications and the inventor of the Hotline protocol, Adam Hinkley. <small>(February 25, 1999)</small>
http://archive.salon.com/21st/feature/1999/02/25feature.html

Wikipedia.org: Hotline Communications - Presents the now defunct company that created the Hotline Connect protocol, their software suit, its history, and its successors.
http://en.wikipedia.org/wiki/Hotline_Communications

Naibat.com: Hotline File Sharing - Hosts a tracker, several user guides in PDF format, old client and server software for historical purposes and a collection of useful links.
http://www.nailbat.com/content/view/14/32/