assembler
program that turns assembly language into machine code
Tiny C Compiler
fast, small and free C compiler
GNU assembler
GNU assembler, part of binutils
Microsoft Macro Assembler
x86 assembler that uses the Intel syntax for MS-DOS and Microsoft Windows
Merlin
Apple II macro assembler
flat assembler
open source assembler
Turbo Assembler
computer assembler developed by Borland
High Level Assembly
high-level assembly language