NASM is a free and open-source assembler for x86 architecture. It is designed to be portable and efficient. NASM is also popular because it is used as the default assembler for many Linux distributions.
NASM is a very versatile assembler and can be used for a wide variety of programming tasks. It supports a wide range of directives and has a very flexible syntax. This makes it a popular choice for many assembly language programmers.
NASM is available for a wide range of platforms, including Windows, Linux, and BSD. It is also available in both 32-bit and 64-bit versions.