From Rese Applications Schlaepfer:
Modo is an integrated GUI front-end to the MODTRAN5 radiative transfer code, running on the IDL virtual machine. It has been created to ease the modelling of the at-sensor radiance for hyperspectral sensors but also for generic radiometric simulation tasks. The basic functionality includes: MODTRAN (creation and translation of tape5-s), plotting the MODTRAN-outputs, extraction and conversion of spectra from the MODTRAN-output, easy creation of sensitivity analysis series, and convolution of spectra to hyperspectral band characteristics. The licensed distribution of MODO includes platform-specific MODTRAN exectuables, compiled from the original MODTRAN code and is compatible to all current operating systems (Linux/MacOSX/Windows).