Octoprint
At our office we have an ultimaker 2 installed, we have it now for some weeks and already printed out a bunch of stuff. It's cool to see, amazed by the technology.
Expect the manner to start a print job, you have to save your generated gcode files onto an SD card, stick it into the ultimaker and use the rather simple menu from the tiny display to start the print job.
The time of a print job is rather long depending on the object you want to print, so many times you got up and went seeing if everything …