FLAC 3D, Fast Lagrangian Analysis of Continua in 3D, is numerical modeling software for advanced geotechnical analysis of soil, rock, groundwater, and ground support. It utilizes an explicit finite difference formulation.
SIGMA/W is a powerful finite element software product for modeling stress and deformation in earth and structural materials. SIGMA/W analyses may range from simple linear elastic simulations to soil-structure interaction problems with nonlinear material models.
Tochnog Professional is a 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.