What viewer Should I use?
There are many viewers that work with Halcyon. We recommend Firestorm.
Here is a list of known viewers:
Most popular viewer and our recommendation: Firestorm - http://www.firestormviewer.org/downloads
Oculus Rift-compatible viewer: CtrlAltStudio - http://ctrlaltstudio.com/viewer
Alchemy - https://alchemyviewer.org
Cool VL - http://sldev.free.fr/
Kokua - http://blog.kokuaviewer.org/
Radegast - http://radegast.org/wp
Singularity - http://www.singularityviewer.org/downloads