NASM Alternatives

NASM is described as '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' and is an app in the development category. There are seven alternatives to NASM for Windows, Linux, Haiku and Mac. The best NASM alternative is Yasm, which is both free and Open Source. Other great apps like NASM are Pelles C, Easy code, flat assembler and MASM Builder.

NASM

Free • Open Source

The Netwide Assembler, NASM, is an 80x86 and x86-64 assembler designed for portability and modularity. It supports a range...

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NASM alternatives page was last updated Sep 9, 2022

Yasm
Yasm is a complete rewrite of the NASM assembler. It supports the x86 and AMD64 instruction sets, accepts NASM and GAS assembler syntaxes and outputs binary, ELF32 and ELF64 object formats.
3 Yasm alternatives
License model
- Free • Open Source
Platforms
- Windows
- Linux
- Haiku
Yasm VS NASM
Is Yasm a good alternative to NASM?
- Yasm is the most popular Windows & Linux alternative to NASM.
- Yasm is the most popular Open Source & free alternative to NASM.
- Yasm is Free and Open SourceNASM is also Free and Open Source

Pelles C
Pelles C is a comprehensive development suite that can help you create apps compatible with Windows and ARM platforms.
61 Pelles C alternatives
License model
- Free Personal • Proprietary
Application type
- IDE
Platforms
- Windows
Pelles C VS NASM
Is Pelles C a good alternative to NASM?

Easy code
Easy Code is the visual assembly programming environment made to build 32-bit Windows applications. The Easy Code interface, looking like Visual Basic, allows you to program Windows assembler applications (executable files, dynamic and static libreries, COFF object files...
71 Easy code alternatives
License model
- Free • Open Source
Application type
- IDE
Platforms
- Windows
Easy code VS NASM
Is Easy code a good alternative to NASM?

flat assembler
The flat assembler is a fast and efficient self-assembling x86 assembler for DOS, Windows and Linux operating systems. Currently it supports x86 and x86-64 instructions sets with MMX, 3DNow!, SSE up to SSE4, AVX, AVX2 and XOP extensions, can produce output in plain binary, MZ...
4 flat assembler alternatives
License model
- Free • Open Source
Platforms
- Windows
- Linux
flat assembler Features
Portable
Cross Compiler
Graphical User Interface
Show all NaN flat assembler features ▾
flat assembler VS NASM
Is flat assembler a good alternative to NASM?

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.
66 MASM Builder alternatives
License model
- Free • Proprietary
Platforms
- Windows
MASM Builder Features
Portable
Show all NaN MASM Builder features ▾
MASM Builder VS NASM
Is MASM Builder a good alternative to NASM?

Flasm
Flasm is a free command line assembler/disassembler of Flash ActionScript bytecode. It lets you make changes to any SWF. Flasm fully supports SWFs produced by Macromedia Flash 8 and earlier.
5 Flasm alternatives
License model
- Free • Open Source
Platforms
- Mac
- Windows
- Linux
Flasm Features
Disassembler
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Flasm VS NASM
Is Flasm a good alternative to NASM?
- Flasm is the most popular Mac alternative to NASM.
- Flasm is Free and Open SourceNASM is also Free and Open Source

JWasm
JWasm is a Masm v6 compatible assembler. It's released under the Sybase Open Watcom Public License 1.0. JWasm can be used for virtually any purpose, unlike Microsoft's free download of current Masm versions, which are for non-commercial use only.
5 JWasm alternatives
License model
- Free • Open Source
Platforms
- Windows
- Linux
JWasm VS NASM
Is JWasm a good alternative to NASM?