PCem - PCem emulates an IBM 5150 PC, several models of clones and successors, along with various graphics...
flat assembler - A fast and efficient self-assembling x86 assembler for DOS, Windows and Linux.
86Box - 86Box is a hypervisor and IBM PC system emulator that specializes in running old operating systems...
NASM - The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and...
i8086emu - i8086emu is an cross-platform emulator for the Intel 8086 microprocessor.
Yasm - Yasm is a complete rewrite of the NASM assembler.