This is a self sufficient WAR archive and do not need any other software for its functioning.
In most cases this sample will be good enough to solve your need to silent print or view RTF documents.
However, you might consider learning more about the parameters and how to
change them so you can change one or more of the existing behavior. In addition this tutorial
did address some of the basic questions and queries about deploying and customizing it.
Read tutorial...
Press view to edit it in the browser window and silent print to print to a printer. Clicking on view will open the RTF in the browser window which you can edit and save the same back to a server location.
[NOTE: Remote save of these documents are disabled in viewer because remote files has read only permission. You might be able to save a local copy of the files.]
This URL next is a demo sample creates a RTF using report API and then sent to browser for editing or silent printing.