A86: finest assembler, at any cost under any terms, for Intel x86/compatibles. D86: screen-oriented program to troubleshoot buggy programs written for MS-DOS; freezes program states, shows values of registers, flags, memory; single steps forward or back.

A linker for MSDOS and Windows. [Open source, Artistic License]

A self-assembling open-source 80x86 assembler for DOS, Windows and Linux. It supports all 8086-80486/Pentium instructions with MMX, SSE, SSE2 and 3DNow! extensions, can produce output in binary, MZ, PE, COFF or ELF format.

Lists assemblers, cross-assemblers, linkers, and librarians, where available, for a wide variety of operating systems and processors.

Visual assembly language RAD IDE with built-in FASM assembler. Designed for easy developement of big assembly written applications. Self-contained, Fresh is written in Fresh and is fully compatible with FlatAssembler (FASM).

Collection asm development tool downloads.

Information and tools for Windows assembly language programming.

A linker/locator for use when need more control over placement of sections within the image, than a standard linker provides. [Zero-price shareware]

A TASM IDEAL mode compatible assembler for DOS and Windows. Support 3DNow! Pro, SSE, SSE2, SSE3(PNI) instructions. Also download HRC LZASM syntax for FAR Colorer plugin. [Freeware]

Integrated Development Environment for Windows assembly programming. It includes advanced source editor and 8086 assembler.

Micro Assembler IDE includes advanced source editor, 8086 assembler and IDE. All in one combination for beginners. [Freeware]

An 80x86 assembler designed for portability and modularity. [Open source, LGPL]

Assembly tutorial regarding NASM assembler. Contains usage descriptions.

Easy-to-use assembler for DOS and the Intel x86 and compatible processors, including support for real mode and protected mode.

Collection files and links to toolset for x86 assembler programming.

Free 32-bit assembler for 16/32 bit DOS and 32 bit Windows, for easy protected mode programming.

MASM versions history, links and comments.

The continuation of SpAsm project. It's a PE Specific Assembler for ReactOS, Win32. All in one Assembler, Linker, IDE, Debugger.

A complete rewrite of the NASM assembler under BSD License. is designed from the ground up to allow for multiple assembler syntaxes to be supported (eg, NASM, TASM, GAS, etc.) in addition to multiple output object formats and even multiple instruction sets.