View source for Comparison of assemblers

{{short description|None}}

This is an incomplete '''comparison of [[Assembler (computing)|assemblers]]'''. Some assemblers are components of a compiler system for a [[high-level programming language]] and may have limited or no usable functionality outside of the compiler system. Some assemblers are hosted on the target processor and operating system, while other assemblers (cross-assemblers) may run under an unrelated operating system or processor. For example, assemblers for [[embedded system]]s are not usually hosted on the target system since it would not have the storage and terminal I/O to permit entry of a program from a keyboard. An assembler may have a single target processor or may have options to support multiple processor types.

== As part of a compiler suite ==

*[[GNU Assembler]] (GAS): GPL: many target instruction sets, including [[ARM architecture]], [[Atmel AVR]], [[x86]], [[x86-64]], [[RISC-V]], [[Freescale 68HC11]], [[Freescale ColdFire|Freescale v4e]], [[Motorola 68000 series|Motorola 680x0]], [[MIPS architecture|MIPS]], [[PowerPC]], IBM [[System z]], [[TI MSP430]], [[Zilog Z80]].
*SDAS (fork of ASxxxx Cross Assemblers and part of the [[Small Device C Compiler]] project): GPL: several target instruction sets including [[Intel 8051]], [[Zilog Z80]], [[Freescale 68HC08]], [[PIC microcontroller]].
*The [[Amsterdam Compiler Kit]] (ACK) targets many architectures of the 1980s, including [[MOS Technology 6502|6502]], [[Motorola 6800|6800]], [[Motorola 68000 series|680x0]], [[ARM architecture|ARM]], [[x86]], [[Zilog Z80]] and [[Zilog Z8000|Z8000]].
*[[LLVM]] targets many platforms, however its main focus is not machine-dependent code generation; instead a more high-level [[Typed assembly language|typed]] assembly-like [[LLVM Intermediate Representation|intermediate representation]] is used. Nevertheless for the most common targets the LLVM MC (machine code) project provides an assembler both as an integrated component of the compilers and as an external tool.
* Some other [[Self-hosting (compilers)|self-hosted]] native-targeted language implementations (like [[Go (programming language)|Go]], [[Free Pascal]], [[SBCL]]) have their own assemblers with multiple targets. They may be used for [[inline assembly]] inside the language, or even included as a library, but aren't always suitable for being used outside of their framework - no command-line tool exists, or only the intermediate representation can be used as their input, or the set of supported targets is very limited.

==Single target assemblers==

===6502 assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
|-
! [[Atari Assembler Editor]]
| [[Shepardson Microsystems]]
| {{No}}
| {{Proprietary}}
| [[MOS Technology 6502]]
| [[Atari 8-bit]]
|-
! Atari Macro Assembler
| [[Shepardson Microsystems]]
| {{No}}
| {{Proprietary}}
| [[MOS Technology 6502]]
| [[Atari 8-bit]]
|-
! EDASM
| [[Apple Inc.|Apple Computer]]
| {{No}}
| {{dunno}}
| [[MOS Technology 6502]]
| [[Apple DOS|Apple DOS 3.x]]
|-
! [http://k2devel.sourceforge.net/download.html k2asm]
| Andre Kaesmacher, Hauke Brandes, Börje Sieling
| {{Yes}}
| {{Free|[[Artistic License]]}}
| [[MOS Technology 6502]]
| [[Linux]], [[Windows]], [[macOS]], possibly other Unices
|-
! [[Lazer's Interactive Symbolic Assembler|Lisa]]
| [[Randall Hyde]]
| {{No}}
| {{Proprietary}}
| [[MOS Technology 6502]]
| [[Apple II]]
|-
! [[MAC/65]]
| [[Optimized Systems Software]]
| {{No}}
| {{Proprietary}}
| [[MOS Technology 6502]], [[WDC 65C02]]
| [[Atari 8-bit]]
|-
! [[Merlin (assembler)|Merlin]]
| [[Glen Bredon]]
| {{Yes}}
| {{Free|[[Public-domain software|Public-domain]]}}
| [[MOS Technology 6502]], [[WDC 65C02]]
| [[Apple II]]
|-
! [https://juiced.gs/store/opus-ii-software/ ORCA/M]
| [[The Byte Works]]
| {{No}}
| {{Proprietary}}, Free for non-commercial use
| [[MOS Technology 6502]], [[WDC 65C02]], [[WDC 65C816]]
| [[Apple ProDOS|ProDOS 8/16]], [[Apple GS/OS|GS/OS]]
|-
! [http://rmac.is-slick.com RMAC]
| James Hammons, George Nakos, Landon Dyer
| {{Yes}}
| {{Free}}
| [[MOS Technology 6502]]
| [[Linux]], [[Windows]], [[macOS]]
|-
! SynAssembler
| [[Synapse Software]]
| {{No}}
| {{Proprietary}}
| [[MOS Technology 6502]]
| [[Atari 8-bit]]
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
|Volker Barthelmann, Frank Wille
| {{No}}
| {{Free}}
| [[MOS Technology 6502]]
| various
|-
! [https://www.floodgap.com/retrotech/xa/ xa65]
| Cameron Kaiser, André Fachat
| {{Yes}}
| GPL
| [[MOS Technology 6502]], [[WDC 65C02]], [[WDC 65C816]]
| [[Linux]], various
|-
! [https://github.com/pfusik/xasm XASM]
| Piotr Fusik
| {{Yes}}
| {{Free}}
| [[MOS Technology 6502]]
| [[Linux]], [[Windows]], [[macOS]]
|}

===680x0 assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
! Development active
|-
! ASM-One Macro Assembler
| [[Rune Gram-Madsen]]
| {{No}}
| {{Free}}
| [[Motorola 68000 series|Motorola 680x0]]
| Commodore [[Amiga]]
| {{no}}
|-
! [[GNU Assembler|GAS]]
| [[GNU Project]]
| {{Yes}}
| {{Free}}
| [[Motorola 68000 series|Motorola 680x0]]
| various
| {{yes}}
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
|Volker Barthelmann, Frank Wille
| {{No}}
| {{Proprietary}}
| [[Motorola 68000 series|Motorola 680x0]]
| various
| {{yes}}
|-
! [http://rmac.is-slick.com RMAC]
| James Hammons, George Nakos, Landon Dyer
| {{Yes}}
| {{Free}}
| [[Motorola 68000 series|Motorola 680x0]], [[MOS Technology 6502]]
| [[Linux]], [[Windows]], [[macOS]]
| {{yes}}
|}

===ARM assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! Host [[Computing platform|platform]]
! ARM64
|-
! [[GNU Assembler|GAS]]
| [[GNU Project]]
| {{Yes}}
| {{GPL-lic}}
| various
| {{yes}}
|-
! [[Tiny C Compiler|TCCASM]]
| [[Fabrice Bellard]]
| {{Yes}}
| {{LGPL-lic}}
| [[Unix-like]], [[Microsoft Windows|Windows]]
| {{yes}}
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
| Volker Barthelmann, Frank Wille
| {{No}}
| {{Free}}
| various
| {{no}}
|-
! [[FASM|FASMARM]]
| revolution, [[Tomasz Grysztar]]
| {{Yes}}
| {{Free|[[Simplified BSD license|Simplified BSD]] with [[weak copyleft]]}}
| [[Microsoft Windows|Windows]], [[DOS]], [[Linux]], [[Unix-like]]
| {{no}}
|-
! [https://github.com/Kingcom/armips/blob/master/Readme.md ARMIPS]
| Kingcom
| {{Yes}}
| {{Free|[[MIT License|MIT]]}}
| various
| {{no}}
|}

===RISC-V assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! Host [[Computing platform|platform]]
! RISC-V
|-
! [[GNU Assembler|GAS]]
| [[GNU Project]]
| {{Yes}}
| {{GPL-lic}}
| various
| {{yes}}
|-
! [[Tiny C Compiler|TCCASM]]
| [[Fabrice Bellard]]
| {{Yes}}
| {{LGPL-lic}}
| [[Unix-like]], [[Microsoft Windows|Windows]]
| {{yes}}
|}

===Mainframe Assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
|-
! Assembly Language for [[Multics]] (ALM)
|
| {{Yes}}
| {{Free|[[MIT License|MIT]]}}
| [[GE-645]]<br />[[Honeywell 6180]]
| [[GE-645]]<br />[[Honeywell 6180]]
|-
! 705 [[Autocoder]]
| [[IBM]]
|
| {{Free}}
| [[IBM 705]]
|
|-
! 1410/7010 OS [[Autocoder]]
| [[IBM]]
|
| {{Free}}
| [[IBM 1410]]<br>[[IBM 7010|7010]]
| IBM 1410 Processor Operating System<br>(1410-PR-155)
|-
! 7070/7074 Autocoder
| [[IBM]]
|
| {{Free}}
| [[IBM 7070]]<br>[[IBM 7072]]<br>[[IBM 7074|7074]]
|
|-
! 7080 Autocoder III
| [[IBM]]
|
| {{Free}}
| [[IBM 7080]]
| IBM 7058 Processor
|-
![[COMPASS]]
| [[Control Data Corporation]]
|
| {{Free}}
| [[Control Data Corporation|CDC]] [[CDC 3000 series#Lower 3000 series|lower 3000 series]]
| [[Control Data Corporation|CDC]] MASTER<br>MSOS<br>RTS OS<br>[[CDC SCOPE|SCOPE]]
|-
![[COMPASS]]
| [[Control Data Corporation]]
|
| {{Free}}
| [[Control Data Corporation|CDC]] [[CDC 3000 series#Upper 3000 series|upper 3000 series]]
| [[Control Data Corporation|CDC]] [[CDC SCOPE|SCOPE]]
|-
![[COMPASS]]
| [[Control Data Corporation]]
|
| {{Free}}
| [[Control Data Corporation|CDC]] [[CDC 6000 series|6000 series]]<br>[[CDC 7600|7600]]<br>[[CDC Cyber|Cyber]] 70, 170
| [[Control Data Corporation|CDC]] [[CDC Kronos|Kronos]]<br>[[NOS (operating system)|NOS]]<br>NOS/BE<br>[[CDC SCOPE|SCOPE]]
|-
! [[FORTRAN Assembly Program#FORTRAN assembly program|Fortran Assembly Program]] (FAP)
|David E. Ferguson, Donald P. Moore
|
| {{Free}}
| [[IBM 709]], [[IBM 7040|704x]], [[IBM 7090|709x]]
| [[History of IBM mainframe operating systems#FORTRAN Monitor System|Fortran Monitor System]], [[IBM 7090/94 IBSYS|IBSYS]]
|-
! GCOS Macro Assembly Program (GMAP)
|[[General Electric]]
|
| {{Free}}
| [[GE-600 series]], [[Honeywell 6000 series]]
| [[General Comprehensive Operating System|GCOS]]
|-
! [[IBM 7090/94 IBSYS|Macro Assembly Program]] (MAP)
|[[IBM]]
|
| {{Free}}
| [[IBM 709]], [[IBM 7040|704x]], [[IBM 7090|709x]]
| [[IBM 7090/94 IBSYS|IBSYS]]/IBJOB on 709, 704x, 709x
|-
! [[Symbolic Assembly Program]] (SAP)
|[[United Aircraft]]
|
| {{Free}}
| [[IBM 704]]
| [[IBM 704]]
|-
! [[IBM Basic assembly language#Basic Programming Support assembler|IBM Basic Assembly Language]] (BAL)
| [[IBM]]
| 
| {{Free}}
| [[IBM System/360]]
| [[IBM Basic Programming Support|IBM BPS/360]]
|-
! [[ASSIST (computing)|ASSIST]]
| [[Penn State University]]
| [[Public Domain]]
| {{Free}}
| [[IBM System/360]]
| [[MVS]]
|-
! UNIVAC VS/9 Assembler
| [[Unisys]]
| 
| {{Proprietary}}
|  Univac 9060 and 9070 (Similar to IBM System/370)
| [[VS/9]]
|-
! BS2000 Assembler H
| [[Fujitsu]]
|
| {{Proprietary}}
| Fujitsu Technology Series SE (Similar to IBM System/370)
| [[BS2000]]
|-
! [https://sourceforge.net/projects/z390/ z390 Portable Mainframe Assembler]
| Don Higgins
| {{Open source|[[GPL]]}}
| {{Free}}
| Simulated IBM System/370
| Simulated MVS
|-
! [[IBM High-Level Assembler]] (HLASM)
| [[IBM]]
| {{n/a}}
| {{Proprietary}}
| [[IBM System/370]]. [[z/Architecture]]
| [[z/OS]], [[z/VSE]], [[z/VM]]
|-
! IBM Assembler D
| [[IBM]]
|
| {{Free}}
| [[IBM System/360]]
| IBM [[DOS/360 and successors|OS/360]]
|-
! IBM Assembler E
| [[IBM]]
|
| {{Free}}
| [[IBM System/360]]
| IBM [[OS/360 and successors|OS/360]]
|-
! IBM Assembler F
| [[IBM]]
|
| {{Free}}
| [[IBM System/360]]
| IBM [[OS/360 and successors|OS/360]] and [[CP/CMS|CP-67/CMS]]
|-
! [[IBM Basic assembly language and successors#Assembler G|Assembler G]]
| [[University of Waterloo]]<ref>Modification of IBM's Assembler F</ref>
|
| {{Free}}
| [[IBM System/360]] and others (table-driven)
| IBM [[OS/360 and successors|OS/360]] and [[CP/CMS|CP-67/CMS]]
|-
! IBM [[IBM Basic assembly language and successors#Assembler H|Assembler H]]
| [[IBM]]
| {{n/a}}
| {{Proprietary}}
| [[IBM System/360]] and [[IBM System/370|System/370]]
| IBM [[OS/360 and successors]]
|-
! IBM Assembler XF
| [[IBM]]
|
| {{Free}}
| [[IBM System/370]]
| numerous
|-
! [[PL360|PL/360]]
| [[Niklaus Wirth]]
|  {{Yes}}
| {{Free}}
| [[IBM System/360]]
| IBM [[OS/360 and successors|OS/360]]
|-
! Meta-Symbol
| [[Scientific Data Systems]] (SDS)
|
| {{Free}}
| [[SDS Sigma series]]
| BTM, [[Universal Time-Sharing System|UTS]], [[Universal Time-Sharing System#CP-V|CP-V]]
|-
! Xerox Assembly Program (AP)<ref>{{cite book |last1=Xerox Corporation |title=Xerox Assembly Program (AP) |date=1975 |url=https://www.livingcomputers.org/UI/UserDocs/CP-V/4_Xerox_Assembly_Program_Reference.pdf |access-date=June 28, 2023}}</ref>
| [[Xerox Data Systems]]
|
| {{Free}}
| [[SDS Sigma series]], [[Xerox 500 series]]
| [[CP-V]] CP-R
|-
! Meta Assembler (MASM)
| [[UNIVAC]]
|
| {{Free}}
| [[UNIVAC 1100/2200 series]]
| [[UNIVAC EXEC 8]]
|-
|}

===POWER, PowerPC, and Power ISA assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
|-
! [[GNU Assembler|GAS]]
| [[GNU Project]]
| {{Yes}}
| {{GPL-lic}}
| [[IBM POWER instruction set architecture|POWER]], [[PowerPC G4|PowerPC 74xx]], [[PowerPC 970]]
| All platforms supported by [[GNU Binutils]]
|-
! [https://www.audentia-gestion.fr/IBM/PDF/idalangref_pdf.pdf IBM AIX assembler]
| [[IBM]]
| {{No}}
| {{Proprietary}}
| [[IBM POWER Instruction Set Architecture|POWER]]
| [[IBM AIX]]
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
| Volker Barthelmann, Frank Wille
| {{No}}
| {{Free}}
| [[IBM POWER Instruction Set Architecture|POWER]], 40x, 440, 460, 6xx, 7xx, 7xxx, 860, Book-E, e300 and e500
| various
|}

===x86 assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! Host [[Computing platform|platform]]
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! x86-64
! Development active
|-
! [[A86 (software)|A86/A386]]
| Eric Isaacson
| [[Microsoft Windows|Windows]], [[DOS]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No}}
|-
! [[Amsterdam Compiler Kit|ACK]]
| [[Andrew Tanenbaum]], Ceriel Jacobs
| [[Linux]], [[MINIX]], [[Unix-like]]
| {{Yes}}
| {{Free|[[BSD licenses|BSD]] since 2003}}
| {{no}}
| 1985-? {{ref|ACK}}
|-
! [[IBM ALP]]
| [[IBM]]
| [[OS/2]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No}}
|-
! [[Intel]] ASM86
| [[Intel]]
| [[DOS]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No}}
|-
! [[AT&T]]
| [[AT&T]]
| [[Unix System V]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No|1985-?}}{{ref|ATT}}
|-
! [[Digital Research]] RASM-86 Relocating Assembler
| [[Digital Research]]
| [[CP/M-86]], [[DOS]], [[Intel]]'s [[ISIS (operating system)|ISIS]] and [[iRMX]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No|1978-1992}}
|-
! [[EuroAssembler]]
| [[Pavel "vitsoft" Šrubař]]
| [[Microsoft Windows|Windows]], [[Linux]] 
| {{Yes}}
| {{Proprietary|[[Freeware]]}}
| {{yes}}
| {{Yes}}
|-
! [[FASM]]
| [[Tomasz Grysztar]]
| [[Microsoft Windows|Windows]], [[DOS]], [[Linux]], [[Unix-like]]
| {{Yes}}
| {{Free|[[Simplified BSD license|Simplified BSD]] with [[weak copyleft]]}}
| {{yes}}
| {{Yes}}
|-
! [[GNU Assembler|GAS]]
| [[GNU Project]]
| [[Unix-like]], [[Microsoft Windows|Windows]], [[DOS]], [[OS/2]]
| {{Yes}}
| {{GPL-lic}}v3
| {{yes}}
| {{Yes|Since 1987}}
|-
! [[High Level Assembly|HLA]]
| [[Randall Hyde]]
| [[Microsoft Windows|Windows]], [[Linux]], [[FreeBSD]], [[macOS]]
| {{Yes}}
| {{Free|[[Public domain]]}}
| {{no}}
| {{no}}
|-
! [[Open Watcom Assembler]]<br />(HJWASM a.k.a. UASM, JWASM, WASM)
| [[Watcom]]
| [[Linux]], [[Microsoft Windows|Windows]], [[DOS]], [[FreeBSD]], [[OS/2]]
| approved by [[Open Source Initiative|OSI]], but not by [[Free Software Foundation|FSF]]
| {{Free|[[Sybase Open Watcom Public License|Sybase Open Watcom Public]]}}
| {{yes}}
| {{Yes}}
|-
! [[Microsoft Macro Assembler|MASM]]
| [[Microsoft]]
| [[Microsoft Windows|Windows]], [[DOS]], [[OS/2]]
| {{No}}
| {{Proprietary|Microsoft [[End-user license agreement|EULA]]}}
| {{yes}}
| {{Yes|Since 1981}}{{ref|MASM}}
|-
! [[Netwide Assembler|NASM]]
| [[Simon Tatham]], Julian Hall, [[Hans Peter Anvin]], et al.
| [[Linux]], [[macOS]], [[Microsoft Windows|Windows]], [[DOS]], [[OS/2]]
| {{Yes}}
| {{Free|[[BSD licenses|BSD]]}}
| {{yes}}
| {{Yes}}
|-
! [http://www.smorgasbordet.com/pellesc/ POASM]
|
| [[Microsoft Windows|Windows]], [[Windows Mobile]]
| {{No}}
| {{Proprietary|[[Freeware]]}}
| {{yes}}
| {{Yes}}
|-
! [[Tim Paterson]]'s ASM
| [[Tim Paterson]]
| [[86-DOS]], [[DOS]] [[DEBUG]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No|[http://www.patersontech.com/dos/manuals.aspx 1979-1983]}}<!-- ASM existed in 1979, before QDOS, which was first introduced in 1980. ASM was maintained up to at least 1981, possibly longer. -->
|-
! [[Turbo Assembler|TASM]]
| [[Borland]]
| [[Microsoft Windows|Windows]], [[DOS]]
| {{No}}
| {{Proprietary}}
| {{no}}
| {{?}}{{ref|TASM1}}{{ref|TASM2}}
|-
! [[Tiny C Compiler|TCCASM]]
| [[Fabrice Bellard]]
| [[Unix-like]], [[Microsoft Windows|Windows]]
| {{Yes}}
| {{LGPL-lic}}
| {{yes}}
| {{No}}
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
| Volker Barthelmann, Frank Wille
| various
| {{No}}
| {{Free}}
| {{yes}}
| {{Yes}}
|-
! [https://sourceforge.net/projects/asm-86-dos/ 86-Assembler for DOS]
| Stephen Duffy
| DOS
| {{Yes}}
| {{open source | [[GPL2]]}}
| {{no}}
| {{No}}
|-
! [[Xenix]]
| [[Microsoft]]
| [[Xenix]] 2.3 and 3.0 (before 1985)
| {{No}}
| {{Proprietary}}
| {{no}}
| {{No|1982-1984}}
|-
! [https://github.com/yasm/yasm YASM]<ref name=YASM>[https://yasm.tortall.net The Yasm Modular Assembler Project]</ref>
| [[Peter Johnson (computer engineer)|Peter Johnson]]
| [[Microsoft Windows|Windows]], [[DOS]], [[Linux]], [[Unix-like]]
| {{Yes}}
| {{Free|[[BSD licenses|BSD]]}}
| {{yes}}
| {{no}}{{ref|YASMnote}}
|}
# {{Note|ACK}} Part of the [[MINIX 3]] source tree, but without obvious development activity.
# {{Note|ATT}} Developed by [[Interactive Systems Corporation]] in 1986 when they ported [[UNIX System V]] to Intel iAPX286 and 80386 architectures. Archetypical of [[X86 assembly language#Syntax|ATT syntax]] because it was used as a reference for GAS. Still used for The [[SCO Group]]'s products, [[UnixWare]] and [[OpenServer]].
# {{Note|MASM}} Active, supported, but unadvertised.
# {{Note|TASM1}} Part of the [[C++Builder]] Tool Chain, but not sold as a stand-alone product, or marketed since the CodeGear spin-off; Borland was still selling it until then. Version 5.0, the last, is dated 1996.
# {{Note|TASM2}} Turbo Assembler was developed as ''Turbo Editasm'' by Uriah Barnett from Speedware Inc (Sacramento, CA) between 1984 and 1987, then later sold to, or marketed by, Borland as their Turbo Assembler.
# {{Note|YASMnote}} Last stable version 1.3.0 was released in August 2014, and low maintenance since then: https://github.com/yasm/yasm

===Z80 assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
|+
!Assembler
!Developer
!Host [[Computing platform|platform]]
![[Free and open-source software|FOSS]]
![[Software license|License]]
!Development active
|-
![[Microsoft MACRO-80]]
|[[Microsoft]]
|[[CP/M]], [[ISIS (operating system)|ISIS-II]], [[TRSDOS]], [[TEKDOS]], [[MSX-DOS]]
|{{No}}
|{{Proprietary|[[Commercial software|Commercial]]}}
|{{No}}
|-
![[Zeus Assembler]]
|[[Crystal Computing]]
|[[ZX Spectrum]]
|{{No}}
|{{Proprietary|[[Commercial software|Commercial]]}}
|{{No}}
|-
![http://savannah.nongnu.org/projects/z80asm z80asm]
|Peter Kollner, Paul Flo Williams, John Critchley, Bas Wijnen
|[[Unix-like]], [[Microsoft Windows|Windows]]
|{{Yes}}
|{{GPL-lic|[[GNU General Public License|GNU GPL]]v3}}
|{{No}}
|-
![https://github.com/z00m128/sjasmplus sjasmplus]
|Sjoerd Mastijn, Aprisobal, Peter Helcmanovský, ...
|[[Unix-like]], [[Microsoft Windows|Windows]]
|{{Yes}}
|{{Free|[[BSD licenses|BSD]]}}
|{{Yes}}
|-
![https://github.com/EdouardBERGE/rasm Rasm]
|Berge Edouard
|[[Unix-like]], [[Microsoft Windows|Windows]]
|{{Yes}}
|{{Free|[[MIT License|MIT]]}}
|{{Yes}}
|}

===Other single target assemblers===
{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
|-
| [[Autocoder]]
| [[IBM]]
|
| {{Free}}
| [[IBM 1400 series|IBM 1401, 1440, 1460]]
| IBM 1401, 1440, 1460
|-
| [[Autocoder]]
| [[IBM]]
|
| {{Free}}
| [[IBM 1410]], [[IBM 7010|7010]]
| 1410/7010 Operating System<br>(1410-PR-155)
|-
! [[Babbage (programming language)|Babbage]]
|
| {{No}}
| {{Proprietary}}
| [[GEC 4000 series]]
| [[GEC 4000 series]]
|-
! [[City & Guilds Mnemonic Code]]
| [[City and Guilds of London Institute]]
| {{No}}
| ?
| [[City & Guilds Computer]]
| [[ICL 1900]], [[Elliot 900]]
|-
! [[MACRO-10]]
| [[Digital Equipment Corporation]]
|
| {{Free}}
| [[PDP-10]]
| [[PDP-10]]
|-
! [[MACRO-11]]
| [[Digital Equipment Corporation]]
|
| {{Free}}
| [[PDP-11]]
| [[PDP-11]]
|-
! [[VAX MACRO]]
| [[Digital Equipment Corporation]]
|
| {{Proprietary}}
| [[VAX]], [[DEC Alpha|Alpha]]
| [[OpenVMS]]
|-
! [http://sun.hasenbraten.de/vasm/ VASM]
| Volker Barthelmann, Frank Wille
| {{No}}
| {{Free}}
| [[Zilog Z80]], [[Motorola 6800 family]]
| various
|-
! [[GPUTILS|GPASM]]
| James Bowman, Craig Franklin, David Barnett
| {{Yes}}
| {{GPL-lic}}
| [[PIC microcontroller]]
| many
|-
! [[MIPS architecture|MIPS]]
|
|
| {{Free}}
| [[MIPS architecture|MIPS]]
| [[MIPS architecture|MIPS]]
|-
! [https://rgbds.gbdev.io Rednex Game Boy Development System] (RGBDS)
|
| {{Yes}}
| {{free|[[MIT License]]}}
| [[Game Boy]], [[Game Boy Color]]
| many
|-
! [[Symbolic Optimal Assembly Program]] (SOAP)
| IBM
|
| {{Free}}
| [[IBM 650]]
| [[IBM 650]]
|-
! Technical Assembly System (TASS)
|
|
| {{Free}}
| [[IBM 650]]
| [[IBM 650]]
|-
! [[Symbolic Programming System]] (SPS)
| [[Gary Mokotoff]]
|
| {{Free}}
| IBM [[IBM 1401|14xx]]
| IBM 1401, 1440, 1460
|-
! [[Symbolic Programming System]] (SPS)
|
|
| {{Free}}
| IBM [[IBM 1620|1620]], [[IBM 1710|1710]]
| IBM 1620, 1710
|-

! ASMB, ASBL, NSBL - Numeric op codes,<br />used for 1900 Operating System Executive
|
| {{No}}
| {{Proprietary}}
| [[ICL 1900]]
| [[ICL 1900]]
|-
! GINerator mnemonic opcodes,<br />used for [[GEORGE (operating system)]]
|
| {{No}}
| {{Proprietary}}
| [[ICL 1900]]
| [[ICL 1900]]
|-
! PLAN mnemonic opcodes,<br />used for commercial 1900 programs
|
| {{No}}
| {{Proprietary}}
| [[ICL 1900]]
| [[ICL 1900]]
|-
! Single Address Assembly Language (SAAL)
|
|
| {{Free}}
| [[UNIVAC 1005]]
| [[UNIVAC 1005]]
|-
! Sleuth
|
|
| {{Free}}
| [[UNIVAC 1107]]
| [[UNIVAC EXEC I|EXEC]], [[UNIVAC EXEC II|EXEC II]], [[UNIVAC EXEC 8|EXEC 8]]
|-
! Meta Assembler (MASM)
|
|
| {{Free}}
| [[UNIVAC 1100/2200 series]]
| [[UNIVAC EXEC 8]]
|-
! UTMOST
|
|
| {{dunno}}
| [[UNIVAC III]]
| [[UNIVAC III]]
|-
|}

==Retargetable/cross-assemblers==

{| class="wikitable sortable" style="font-size: 85%; text-align: center"
! Assembler
! Developer
! [[Free and open-source software|FOSS]]
! [[Software license|License]]
! [[Instruction set]]
! Host [[Computing platform|platform]]
|-
! [http://john.ccac.rwth-aachen.de:8000/as/ The Macroassembler AS]
| Alfred Arnold
|
| {{Free}}
| 29xxx, [[AVR microcontrollers|AVR]], 65816, ACE, F2MC-8L, F2MC-16L, HMCS400, 6301, 6309, H8/300(H), H8/500, SH7000 / SH7600 / SH7700, HuC6280, PPC403GA, 4004/4040, 8008, MCS-48, MCS-41, [[Intel MCS-51|MCS-51]], MCS-251, MCS-96/196/296, 8080/8085, [
| [[Win32]], DOS/DPMI, DOS (no longer maintained), OS/2 (no longer maintained), [[Linux]]
|-
! [https://shop-pdp.net/ashtml/asxxxx.php ASxxxx Cross Assemblers]
| Alan R. Baldwin
| {{Yes}}
| {{GPL-lic}}
| 1802, S2650, SC/MP, MPS430, 6100, 61860,  [[MOS Technology 6502|6500]], [[Motorola 6800|6800]](6802/6808), 6801(6803/HD6303), 6804, 6805, [[Motorola 68HC08|68HC(S)08]], 6809, 68HC11, 68HC(S)12, 68HC16, 740, 78K/0, 78K/0S, [[8008]],  8008S,  8048(8041/8022/8021), [[8051]], 8085([[8080]]), AT89LP, 8X300(8X305), DS8XCXXX, [[AVR microcontrollers|AVR]], EZ80, F2MC8L/FX, F8/3870, [[Game Boy]](sm83), H8/3xx, Cypress PSoC(M8C), [[PIC microcontroller|PIC]], [[Rabbit 2000]]/3000, ST6,  [[ST7]],  [[STM8|ST8]],  Z8, [[Zilog Z80|Z80]](HD64180), and Z280 series
| [[Win32]], [[DOS]], [[Linux]], [[Android (operating system)|Android]]
|-
|}

==Notes and references==
{{Reflist}}

==External links==
* [http://www.s100computers.com/Software%20Folder/Assembler%20Collection/Assembler%20Collection.htm List of assemblers running on S100 bus hardware, including CP/M hosted assemblers for 8080 and Z80]
{{X86 assembly topics}}

[[Category:Assemblers|*Assembler]]
[[Category:Software comparisons|Assemblers]]