ReSe Applications Schläpfer is a small Swiss company focused on remote sensing data processing, and specifically on imaging spectroscopy. It was founded in 2000 as a spin-off from the Remote Sensing Laboratories (RSL) of the University of Zurich. The company is owned and run by Dr. Daniel Schläpfer. The major goal is the development and distribution of imaging spectroscopy and remote sensing software. The company expertise is in geometric and atmospheric modeling of radiation in optical remote sensing, as well as the preprocessing of optical remote sensing data. One ground breaking development of ReSe is the PARGE orthorectification software for airborne optical scanner systems. Furthermore, the company successfully advanced the development of the original ATCOR atmospheric correction software packages in close collaboration with the inventor, Dr. Rolf Richter, from DLR. Finally, ReSe is redistributor of the MODTRAN-4 and MODTRAN-5 radiative transfer cod as part of the MODO software.