SDCC-M08 - A free port of SDCC C compiler for Motorola 68HC08/908 Features: long/float/portbit structures, debugger, example projects, reentrant library, assembler, linker. - http://sdcc-m08.sourceforge.net
The SDCC Open Knowledge Resource - An soft- and hardware application supplement to Sandeep Duttas free ANSI C-Compiler for MCS51 targets, SDCC. - http://www.sdccokr.dl9sec.de/
SDCC for PIC18F - Martin Dubuc's SDCC project page. Port SDCC for PIC18F processor. - http://mdubuc.freeshell.org/Sdcc/
SDCC: Small Device C Compiler - 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] - http://sdcc.sourceforge.net/