LMIC was originally developed by the IBM Zurich Research Laboratory. IBM has ceased development since version 1.6, however 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.