The effort to maintain and further develop the Fortran version of CORSIKA is getting increasingly difficult by its complexity. To overcome existing limitations a new version CORSIKA 8 is developed [1, 2] based on modern C++ and Python concepts.
Details you find on the web page: https:// gitlab.ikp.kit.edu/AirShowerPhysics/corsika
 R. Engel et al., Comput. Softw. Big Sci. 3 (2019) 2; arXiv: 1808.08226 [astro-ph]
 M. Reininghaus, R. Ulrich, arXiv: 1902.02822 [astro-ph]