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Development
Programming
Programming Language
Assembler
What are the best x86/x64 assemblers?
4
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73
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Recs.
Jan 12, 2024
Last
Updated
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4
Options
Considered
Best x86/x64 assemblers
Price
Platforms
Last Updated
--
NASM
Free
Windows, DOS, Linux, Unix, OS/2
Jan 4, 2024
--
GNU Assembler
Free
-
Jan 12, 2024
--
FASM
Free
Windows, DOS, Linux, Unix, Mac
Sep 9, 2023
--
YASM
-
-
Jun 29, 2022
See Full List
--
NASM
My Rec
ommendation
for
NASM
My Recommendation for
NASM
All
6
Experiences
1
Pros
3
Cons
1
Specs
Top
Pro
•••
Clean syntax
See More
Top
Con
•••
Poor diagnostics
NASM typically won't tell you the problem, just generic parser errors like "mismatched operand type" or "expected instruction".
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ThriftyMixcoatl's Experience
By far the easiest and most flexible x86 assembler.
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Specs
Platforms:
Windows, DOS, Linux, Unix, OS/2
Top
Pro
•••
Powerful macros
It can do everything GAS+CPP can do combined, and much more.
See More
Top
Pro
•••
Excellent for toy DOS code
NASM can easily create .COM executables and is even supported on DOS.
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Free
Recommend
43
--
GNU Assembler
My Rec
ommendation
for
GNU Assembler
My Recommendation for
GNU Assembler
All
2
Pros
2
Top
Pro
•••
Part of the GCC
Is included with GCC, which is freely available (and may be preinstalled) on Linux.
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Top
Pro
•••
Standards compliant
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Hide
Free
Recommend
18
1
--
FASM
My Rec
ommendation
for
FASM
My Recommendation for
FASM
All
7
Experiences
1
Pros
4
Cons
1
Specs
Top
Pro
•••
Fasm.NET
Can be used from .NET with Fasm.NET.
See More
Top
Con
•••
Low level
Not supporting as many high-level statements as MASM or TASM.
See More
RickZeeland's Experience
Open source self-assembling assembler supporting multiple operating systems. Primarily intended for assembling x86 instructions.
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Specs
Platforms:
Windows, DOS, Linux, Unix, Mac
Top
Pro
•••
Open source
The complete source code is included.
See More
Top
Pro
•••
Compact
Download size only 1035 kilobytes for Windows, 342 kilobytes for Linux. The Windows version also includes an integrated syntax-highlighting editor.
See More
Top
Pro
•••
Free
See More
Hide
See All
Free
Recommend
8
--
YASM
My Rec
ommendation
for
YASM
My Recommendation for
YASM
All
3
Pros
2
Cons
1
Top
Pro
•••
Supports both AT&T and Intel syntax
See More
Top
Con
•••
Lacks relocatable object module format
See More
Top
Pro
•••
Modular
See More
Hide
See All
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here
Recommend
3
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