Where can it be downloaded?
More information on software licensing can be found here.
See the installation options section of the user manual to determine which perfSONAR installation option is right for you.
perfSONAR UI is a client that visualizes perfSONAR data. It is written in Java, and can be used from many different platforms.
A comprehensive installation and user guide is available for perfSONAR at this location:
Source code can be found in the project's GitHub repository: