This one is for those guys who are using the i3 window manager and want Syncthing to appear in i3bar. I have started a small module for i3pystatus and submitted a pull request upstream. If anyone is interested, please check it out and provide any feedback. Thanks!
It is the small little ST up
segment in the bar at the bottom:
When Syncthing is down it turns red:
Left click on the segment starts the Syncthing GUI in the default browser, right click starts/stops Syncthing.