[jlgaddis]

The amateur radio population is getting older. Most hams I know are running Windows anyways (on at least one machine) -- for controlling their radios, weather stations, and such -- so most of the software they write is also for Windows. I imagine the target audience here (amateur radio operators who run Linux on the desktop and have a desire to use this protocol) is very small.

(On a side note, you should write your own open source Winlink client for Linux. Then, you can use the latest VCS-of-the-week and host it wherever you like. Apparently the author preferred to use Windows, CVS, and Sourceforge. It was extremely rude and disrespectful of him to not check with you first, so before you get started make sure that you ask me which language I want you to write it in.)