Free set of software using the Hotline protocols, providing Hotline application suites that can run on GNU/Linux, OS X and Unix. Provides release information for the base HXD products as well as mHXD.

A set of modules for utilizing the Hotline protocol in a Perl environment.

Open source, GNU/Linux-compatible version of the now unavailable Red Light Variety Alpha software, a Hotline protocol client and server with English and Japanese language support.

An improved version with additional features making it compatible with GLoarbLine server and 1.9x servers.