NASM is an 80x86 assembler designed for portability and modularity. It supports a range of object file formats including Linux a.out and ELF, COFF, Microsoft 16-bit OBJ and Win32. 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 Pentium, P6, MMX, 3DNow! and SSE opcodes, and has macro capability. It includes a disassembler as well. License: GNU Lesser General Public License (LGPL) Changes: This is primarily a bugfix release; it correctly handles a number of corner cases broken in 2.01. New features are support for the XSAVE instruction group, %iftoken and %ifempty for sophisticated macros, standard macros for compile date and time, improved warnings, and experimental support for DWARF in ELF64.

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