LMIC was originally developed by the IBM Zurich Research Laboratory. IBM has ceased development since version 1.6 (13th July 2015), however it is provided as open source under the BSD License: https://www.zurich.ibm.com/pdf/lrsc/lmic-release-v1.6.zip
Matthijs Kooijman, Thomas Telkamp and Marcus Oestreicher (IBM) has since declared the intent to take over maintenance.