A .Net implementation of the ECMA-55 and ECMA-116 BASIC standards.

The purpose of this project is to provide a simple 80's style BASIC environment for learning how to program.

Fire up ecmabasic55.exe to get a standard-looking BASIC prompt, then start firing off those line numbers! You can also provide a .BAS file as a parameter to ecmabasic55.exe to run it in batch mode. Type in a program, then use the SAVE command to save it to a file. LOAD will bring a program back into memory. RUN will... run the program...

There is a wiki with more project details here.