Gmsh is an automatic 3D finite element grid generator with built-in CAD and post-processing facilities. Its design goal is to provide a simple meshing tool for academic problems with parametric input and advanced visualization capabilities. It is built around four modules: geometry, mesh, solver, and post-processing. The specification of any input to these modules is done either interactively using the graphical user interface (based on FLTK and OpenGL) or in ASCII text files using Gmsh's own scripting language. Changes: This release introduces new compound geometrical entities for remeshing and/or trans-patch meshing, an improved mesh reclassification tool, and a new client/server visualization mode. Amongst other new features are the ability to watch a pattern of files to merge and integrated MPEG support.