Welcome to the ultimate source for NASM software – the quickest and most efficient way to code 16 and 32 bit x86 assembly language programs! Developed by renowned programmer H. Peter Anvin, NASM is the go-to tool for those who seek a concise and powerful software package for programming on Windows 7. Its user-friendly interface makes it easy even for novices to whip up stunning software programs in no time! Download NASM today and take your programming skills to the next level.

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.

Why Yet Another Assembler?

The Netwide Assembler grew out of an idea on comp.lang.asm.x86 (or possibly alt.lang.asm - I forget which), which was essentially that there didn't seem to be a good free x86-series assembler around, and that maybe someone ought to write one.

* a86 is good, but not free, and in particular you don't get any 32-bit capability until you pay. It's DOS only, too.
* gas is free, and ports over to DOS and Unix, but it's not very good, since it's designed to be a back end to gcc, which always feeds it correct code. So its error checking is minimal. Also, its syntax is horrible, from the point of view of anyone trying to actually write anything in it. Plus you can't write 16-bit code in it (properly.)
* as86 is specific to Minix and Linux, and (my version at least) doesn't seem to have much (or any) documentation.
* MASM isn't very good, and it's (was) expensive, and it runs only under DOS.
* TASM is better, but still strives for MASM compatibility, which means millions of directives and tons of red tape. And its syntax is essentially MASM's, with the contradictions and quirks that entails (although it sorts out some of those by means of Ideal mode.) It's expensive too. And it's DOS-only.

So here, for your coding pleasure, is NASM. At present it's still in prototype stage - we don't promise that it can outperform any of these assemblers. But please, please send us bug reports, fixes, helpful information, and anything else you can get your hands on (and thanks to the many people who've done this already! You all know who you are), and we'll improve it out of all recognition. Again.

Hyperlink code:
Hyperlink and Intro code:
Hyperlink for Forum code:

All NASM reviews, submitted ratings and written comments become the sole property of Windows 7 download. You acknowledge that you, not windows7download, are responsible for the contents of your submission. However, windows7download reserves the right to remove or refuse to post any submission for any reason.

Windows 7 Download periodically updates pricing and software information of NASM full version from the publisher, but some information may be out-of-date. You should confirm all information.
Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for NASM license key is illegal and prevent future development of NASM. Download links are directly from our mirrors or publisher's website, NASM torrent or shared files from free file sharing and free upload services, including Rapidshare, MegaUpload, YouSendIt, SendSpace, DepositFiles, DivShare, HellShare, HotFile, FileServe or MediaFire, are not used.