Catalina is a C compiler plus a set of C libraries and device drivers for use with the Parallax Propeller microcontroller. Catalina is a cross-compiler based on the retargetable C compiler "lcc". Catalina runs on Windows or Linux.
LiteASM is a light weight and reconfigurable Assembly language compiler and Virtual Machine.
It is specially design for embedded systems to use as a portable script interface.
Modern command-line cross-compiler of 8bit processor Z80(and R800) assembly language. Support many directives(even ZX-Spectrum specific as snapshot .SNA generation), has built-in Lua scripting engine, 3-pass design. Windows/DOS/FreeBSD.
A script(ing/ed/able) optimizing compiler for the C and Objective-C languages (and in the future other languages such as C++, D and Java). Written in a scriptinglanguage to allow for experimentation with code generation and optimization techniques.
a delegate compiler and a numerical scriptinglanguage (like syscalls). the compiler is done in concept but the backend is still in the brainstorming phase.