'''COMSOL Multiphysics''' (formerly FEMLAB) is a [[finite element]] analysis and solver [[software]] package for various [[physics]] and [[engineering]] applications, especially coupled phenomena--, or [[multiphysics]]. '''COMSOL Multiphysics''' also offers an extensive and well-managed interface to [[MATLAB]] and its toolboxes for a large variety of [[programming]], preprocessing and postprocessing possibilities. A similar interface is offered to [[COMSOL Script]]. The packages are cross-platform ([[Windows]], [[Mac]], [[Linux]], [[Unix]].) In addition to conventional physics-based user-interfaces, COMSOL Multiphysics also allows for entering coupled systems of [[partial differential equation]]s (PDEs). The PDEs can be entered directly or using the so called weak form (see [[finite element method]] for a description of weak formulation).
