nuBASIC is an implementation of an interpreter of the BASIC programming language and IDE.
It has been designed mainly for educational purposes and it is suitable for simple games, educational or small business programs.
YAMM is a scientific calculator which supports the MATLAB-like programming language. Do not like resource-consuming MATLAB, this software provides a lightweight but efficient environment.
Nickle is a desk calculator language with powerful programming and scripting capabilities. Nickle supports a variety of datatypes, especially arbitrary precision numbers.