SoftIntegration today announced the availability of Ch 4.0, the newest version of its C/C++ interpreter for cross-platform scripting, 2D/3D plotting, numerical computing, shell programming and embedded scripting. Major product enhancements in version 4.0 include shell programming, computational array for numerical computing and bug fixes. Ch Standard Edition is now free for both commercial and non-commercial uses. Ch Professional Edition is free for academic use and costs US$399 for personal or commercial use. Both editions are available for Mac OS X.