Tochnog Professional is a free Finite Element program offering a wide variety of geotechnical and mechanical options; modern material laws including the most recent rate independent and viscous hypoplasticity models; stress, temperature and groundwater pressure analysis; lagrangian and eulerian mesh in space; quasi-static and dynamic calculations; a full libary of isoparametric elements in 1D, 2D and 3D and also featuring typical structural elements like beams, interfaces, springs, etc.; geometry based boundary conditions; mesh independent postprocessing by selecting physical points, lines and surfaces; 2D and 3D mesh refinement; phased modelling stages and extensive parallelisation. Tochnog accepts user defined models in ABAQUS UMAT format.