A self-assembling open-source 80x86 assembler for DOS, Windows and Linux. It supports all 8086-80486/Pentium instructions with MMX, SSE, SSE2 and 3DNow! extensions, can produce output in binary, MZ, PE, COFF or ELF format.
Visual assembly language RAD IDE with built-in FASM assembler. Designed for easy development of big assembly written applications. Self-contained, Fresh is written in Fresh and is fully compatible with FlatAssembler (FASM).