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NASM icon

NASM

The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and modularity. It supports a range of object file formats, including Linux and *BSD a.out, ELF, COFF, Mach-O, Microsoft 16-bit OBJ, Win32 and Win64. It will also output plain binary files.

NASM screenshot 1

Cost / License

  • Free
  • Open Source

Platforms

  • Mac
  • Windows
  • Linux
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NASM was added to AlternativeTo by wavenator on and this page was last updated .

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Install from the command line

  • winget install -e --id NASM.NASM
  • brew install nasm

Be careful what you paste into a terminal. Check what a command installs before running it.

What is NASM?

The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and modularity. It supports a range of object file formats, including Linux and *BSD a.out, ELF, COFF, Mach-O, Microsoft 16-bit OBJ, Win32 and Win64. It will also output plain binary files. Its syntax is designed to be simple and easy to understand, similar to Intel's but less complex. It supports all currently known x86 architectural extensions, and has strong support for macros.