foustep - linux is coming, but we're not quite there yet.
The switch to the Sighthound IO backend makes the backend super easy to do on linux as its already supported.
We have to port the frontend - but we are building a new frontend and don't want to port code we will soon retire.
I want Linux support more than just about anyone - it will happen, hopefully by the end of the year but no promises yet.
-Jonathan (Sighthound CEO)
