It hasn't been a priority yet, but there is no reason in principle. It's written in Java, so is cross-platform. We will be making the source available soon, so people will be able to adapt it to different platforms and capabilities.
Good point Juan - although if you're running it on Linux, the Jnotify library in the .dmg file won't work and you'll need to download from http://sourceforge.net/projects/jnotify/files/ and change the -Djava.library.path appropriately. I.e: java -Djava.library.path=/Dump/apps/jNotify/jnotify-lib-0.94/64-bit\ Linux/ -jar alfresco-sync-0.8.0.4-jar-with-dependencies.jar
It is an entirely different project. We have been working with the maintainers of that project (the very nice team at Worksy) and will be merging the efforts.