John's Mutant contains several projects. The current project is an ECMA-55 Minimal BASIC compiler for Linux systems using AMD64 compatible CPUs. You can download the MinimalBASIC compiler source in the Files section.
This project has moved to https://sourceforge.net/projects/microchipopen/. Visit us over there! Community version of Microchip Technology's GCC (GNU Compiler Collection) based MPLAB® C Compiler for PIC32 MCUs.