Norsk Data ND100 emulator
See ND100 emulator project at NDwiki. This is a copy of the original code repository (to be precise, of the v0.2.4 tarball), because the original site has been offline for a few years now, and the domain has expired.
Requirements libconfig is required. There is a FreeBSD port devel/libconfig.
To install libconfig on Ubuntu:
sudo apt-get update
sudo apt-get install libconfig-dev