SDCC

SDDC (Small Device C Compiler) is a free and open-source compiler for the C programming language, which optimizes ANSI C and offers support for many processors, such as Intel 8051 (and its derivatives), Sharp LR35902 (used in Game Boy), Zilog Z80 (and binary-supported derivatives), Motorola 68HC08, STMicroelectronics STM8, Freescale S08, and Toshiba TLCS-90, among others.

Incomplete support is available for Microchip PIC16 and PIC18. The compiler is partially retargetable, which means that it can be used to produce source code for two or more computing platforms, depending on the CPU instruction set architectures.

The downloaded installer contains a linker, simulator, assembler and debugger. As far as the full setup package is concerned, it includes the SDCC and ucSim application files, SDCDB files, along with the SDCC documentation, include files, and library sources. The following libraries can also be found: DS390, DS400, GBZ90, Z180, Rabbit 2000, Rabbit 3000A, Z80, small, medium and large model, small and large stack auto model, HC08, S08, PIC16, PIC14, and STM8. Any of these components can be excluded from installation.

The Small Device C Compiler suite is released under GPLv2 and newer versions. In addition to Windows, the compiler can be used on Linux and Mac OS X.