NASM - The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and...
Yasm - Yasm is a complete rewrite of the NASM assembler.
PCem - PCem emulates an IBM 5150 PC, several models of clones and successors, along with various graphics...
MASM Builder - MASM Builder is a free Integrated Development Environment IDE for developing 32-bit Windows programs using the Assembler. MASM Builder contains many useful features which will assist you in creating Windows API based programs.
i8086emu - i8086emu is an cross-platform emulator for the Intel 8086 microprocessor.
86Box - 86Box is a hypervisor and IBM PC system emulator that specializes in running old operating systems...