SDCC is a retargettable, optimizing ANSI - C compiler that targets the Intel 8051, Maxim 80DS390, Zilog Z80 and the Motorola 68HC08 based MCUs. Work is in progress on supporting the Microchip PIC16 and PIC18 series. SDCC is Free Open Source Software,...
Shed Skin is an experimental Python-to-C compiler. It can convert pure, but implicitly statically typed Python programs into optimized C code. Currently, these programs cannot freely use the Python standard library.
Jack is an optimizing C compiler for the Jackal 3.0 ISA. The Jackal 3.0 ISA is the target architecture for UVa's Advanced Digital Design Course. JackCC is ready for production use. Additionally, I've written an assembler/simulator: jackas
Mostly C (MC)LEGO RCX C compiler, generates LASM (Lego assembler). Has a number of features not present in NQC: true subroutines, functions w parameters, bool/float types, large const arrays, math library. Requires only LEGO SDK 2.5 (web link provided).
SDCC is a free open source, retargettable, optimizing ANSI C
compiler suite that supports a growing list of processors including the
Intel 8051, Maxim 80DS390, Zilog Z80, Z180, Rabbit 2000, gbz80,
Motorola 68HC08, Microchip PIC16 and PIC18...
SPCC is a lightweight, portable C compiler and a Virtual Machine.
Ultimately, intends to cross-compile a number of languages. Initial target languages: C and C++. Current development targets: C and C++ standalone preprocessor; parser frontend for C and C++ compiler.
The Z83 C Compiler is an optimizing cross compiler for a language very similar to C targeted toward the TI83+. The output from the compiler may be assembled with TASM (http://home.comcast.net/~tasm/) or ZASM (http://lpg.ticalc.org/prj_zasm/).
A portable C++ framework for dynamic class loading. Allows creating and loading binary plugins created by different compilers and/or versions. A binary dynamic cast feature that works over compiler boundaries on a given platform is also provided.