A complete rewrite of the NASM assembler under BSD License. is designed from the ground up to allow for multiple assembler syntaxes to be supported (eg, NASM, TASM, GAS, etc.) in addition to multiple output object formats and even multiple...
WinAsm Studio is a free integrated development environment (IDE) for developing 32-bit Windows and 16-bit DOS programs using the Microsoft Macro Assembler (MASM).