Retargetable, optimizing ANSI C compiler, targets: Intel 8051, Zilog Z80 based MCUs; work underway for Amtel AVR, DS390, Microchip PIC series. Originally designed for embedded systems. [Open Source, GPL]
A free port of SDCC C compiler for Motorola 68HC08/908 Features: long/float/portbit structures, debugger, example projects, reentrant library, assembler, linker.