I imagine that one could develop this further into both ends being cross-platform but the readme seems to really strongly define it is solely built to transfer files from Windows to Linux. If that's all you need for internal tool, that's all you build (and test).

I thought the same; seems to be perfectly fine as a Linux-to-Linux tool.

Can I use this to replace some rsync cronjobs I have? I'd love to convert them to 'streaming' rather than updating every few minutes when the cron fires.