Osiris software has been written by Ali Reza Khaz'ali and Sadegh Bordbar.
License and Citation
Osiris is free to use and is offered under LGPL3.
If you do use Osiris in an academic work, the developers ask that you cite the following paper, which outlines the design principles and general uses of Osiris:
Khaz’ali, A. R., Bordbar, S., and Mehrabani-Zeinabad, A.: "Parallel implementation of coupled phase equilibrium-mass transfer model: efficient and accurate simulation of fractured reservoirs", Journal of Natural Gas Science and Engineering (2020).
A link to this article can be found here.