An assembler for the legendary 6502 processor and it's derivatives
SIMD macro assembler unified for ARM, MIPS, PPC and x86
An x86 assembler that aims to be compatible with MASM and TASM
An educational software system of a tiny self-compiling C compiler
RetDec is a retargetable machine-code decompiler based on LLVM
Assembles M6800 and 6801 assembly language source code. (and Forth)
Emulator of the ancient 8 bit microprocessor SC/MP 2
GNU assembler/disassembler and other tools for the OR1K64-based KPU
A simulator for Atmel's 8/16-bit AVR microcontrollers
Japheth's assembler, JWasm
Libry Compiler 4.1
powerpc disassembler/assembler