I had no trouble finding instructions to install LibreOffice on the Pi 2. It works very well - I can use it instead of a PC.

So now I'd like to try ProjectLibre. I can't find any instructions for installing it - does that mean it doesn't run on the Pi? I downloaded it from the web site but I can't open the file (ProjectLibre 1.6.1-1.rpm), which apparently needs a Red Hat package installer, but I can't find any information. (Try searching for RPM and you get a lot of motor projects...)

Is there a simple way to install ProjectLibre along the same lines as installing LibreOffice on Raspbian on the Rasberry Pi 2?