ENGSIM is an Engineering Simulation and Graphics Library for Microsoft Visual C++. It has all Matlab features and functions. It is very easy to program. It uses the same programming syntax as Matlab, ANSI C/C++. It supports negative indexing for array/matrix, complex array, and complex matrix. Supports fix-point/floating-point communications engineering, and signal processing simulation. Supports statistical analysis, user-defined classes, and user-graphics development. This version is the first release on CNET Download.com.