The development of ResInsight was initiated by Statoil Petroleum AS in 2011, and was followed up by a series of projects. ResInsight is still under active development, mainly by Ceetron Solutions AS who is responsible for the software development work.
ResInsight is a part of the Open Porous Media project.
The software is licensed under GPL 3+, see Licensing details.
The software is hosted at GitHub, and the development progress can be monitored there. The GitHub issue tracker is heavily used to organize our development process.