The Envyo® license server and license client use some additional libraries and frameworks, namely:
CPARSE
The GNU Multiple Precision Arithmetic Library (GMP)
HDF5
LSDA
OpenSSL
pugixml
QT
VMAP
These libraries are licensed under different licensing schemes, which are described in the appendix of the user's guide (PDF format).
The main application of Envyo® links against QtCore and QtNetwork libraries. For the GUI application, it also links against QtGUI and QtWidgets.