fastGLOBETROTTER is an updated version of the same GLOBETROTTER model, using the same input, but that is ~4-20 times faster than GLOBETROTTER without sacrificing accuracy.
The bioRvix paper can be found here.
To download and compile:
git clone https://github.com/sahwa/fastGLOBETROTTER.git && cd fastGLOBETROTTER
R CMD SHLIB -o fastGLOBETROTTERCompanion.so fastGLOBETROTTERCompanion.c -lz -O2