Hi,
Yes, the EvoStream Media Server can be used as a screen capture tool. Since we use the AVConv tool as our transcoder, you can leverage that to grab an x11 screen capture (Linux only).
You can issue a command to the EMS similar to the following:
launchProcess fullpathtobinary=evo-avconv arguments=-f x11grab -r 25 -s cif -i :0.0 -f rtsp -metadata title=test1 rtsp://localhost:5544
This will create a stream called "test1" within your EMS instance which you can then push anywhere you need it to go!