HILA project is a Free and Open Source (FOSS) project maintained and managed by Prof. Kari Rummukainen.
General Public License version 2 is chosen as HILA project's license. Under this license, the developments of HILA are in fact community-driven. Thus HILA's users and developers are expected and welcomed to send back their developments of source codes back to upstream HILA repository.
The contributors of HILA project are researchers and students of computational field theories. One could find the information of contributions from Github insight