I The Scilab Package -- 1 Introduction -- 2 The Scilab Language -- 3 Graphics -- 4 A Tour of Some Basic Functions -- 5 Advanced Programming -- II Tools -- 6 Systems and Control Toolbox -- 7 Signal Processing -- 8 Simulation and Optimization Tools -- 9 SCICOS - A Dynamical System Builder and Simulator -- 10 Symbolic/Numeric Environment -- 11 Graph and Network Toolbox: Metanet -- III Applications -- 12 Modal Identification of a Mechanical Structure -- 13 Control of Hydraulic Equipment in a River Valley.