KASKADE version 2.1 This release contains bug fixes, internal reorganizations, and some extensions which we needed for the time-dependent code kastio. New features: - 3D, - Iterative solvers gmres, cgs, - boundary conditions for systems, Cauchy function gets additional parameter, - assemble the convection term, - temperature plot, color tables, - colorizing the materials, - more robust write command (ignoring non-used points etc.), - simplified input formats. Internal reorganizations: - memory management (returning unused memory), - new events DeleteTriangle and NewGlobSol, - X11, MacOS, Postscript drivers changed. The manuals are stored in the directory pub/kaskade/Manuals. KASTIO version 2.1 First release (2D/3D) of the adaptive multilevel code for parabolic equations of Folkmar Bornemann.