The project Formula can be used for the computation of numeric expressions that is written as string. Main features of the project are high computation speed and simplicity of use. Formula can be used for writing of calculators, plotters and etc.
bobjects package allows beginning students to do GUI programming, implement object persistence, numeric testing, and date calcs. The GUI utility (GUIbrew class) supports introductory assignments with familiar GUI dialogs avoiding green screen console I/O