| "Hotline to the Underground": Salon.com 21st feature that explores the culture of the Hotline community. |
| "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. |
| Avaraline: Protocol that extends the original Hotline protocol, resulting in new features like peer-to-peer file sharing and full user icon arbitration without sacrificing backwards compatibility. |
| HLDNS: Dynamic domain name redirection service catered towards Hotline servers. |
| Hotline Mailing List Archives: Archive of the Hotline Mailing List from the early days of Hotline development. |
| Hotline Protocol: Official listing for versions of the Hotline protocol released under the GNU Public License by Hotsprings, Inc. through the OpenSprings project. |
| Maclavista: Web based hotline tracking - locate a server, and search. |
| Tokyo Hotline: Hotline news and information site written in Japanese. |
| Tracker-Tracker for Hotline: A web site that 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. |
| Trackerfrog Hotline Information: Trackerfrog helps people with NetMeeting ILS servers and Hotline p2p software. |
| VivaHX: News, features, guides and reviews related to Hotline. |
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