Porous Media Adaptive Nonlinear finite element solver based on Differential Algebraic Systems. PANDAS is a finite element package especially designed for the solution of strongly coupled multiphasic porous media problems in solid-fluid interaction. Porous media problems occur in various fields of engineering, as e.g. in soil and rock mechanics or foam and tissue engineering. In general, porous media models include the interacting behaviour of a deforming skeleton and a pore-fluid flow. In addition, thermal as well as chemical and electrochemical phenomena may occur and can be considered within the PANDAS package.