An asssembler for the x86 CPU architecture portable to nearly every modern platform, and with code generation for many platforms old and new.
Publisher’s description
What is NASM?
NASM by NASM is open-source Windows software.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit and 32-bit Windows. Installation asks for administrator rights. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 3.02, released on June 29, 2026. The version history goes back to March 30, 2021: 7 releases, all linked to the official files. That is about 1.3 releases a year.
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: NASM is an open-source Windows tool for 64-bit and 32-bit PCs. Administrators can deploy it unattended.
Is NASM safe to download?
- The file is served by nasm.us, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
0DDB40310861EB29F4D649FEB9466779982A2D251C0DB2B9CF0D21CF591171F3· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 7 versions ›7 versions over 5 years · about 1.3 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 3.02Latest | June 29, 2026 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 3.01 | October 11, 2025 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 3.00 | October 3, 2025 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.16.03 | April 17, 2024 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.16.01 | December 21, 2022 | — | 32-bit EXE (NSIS)64-bit EXE (NSIS) |
| 2.16 | December 20, 2022 | — | 64-bit EXE (NSIS)32-bit EXE (NSIS) |
| 2.15.05 | March 30, 2021 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id NASM.NASM -escoop install main/nasmnasm-3.02-installer-x64.exe /SRelated guide: How to use winget: install and update apps
Also for other systems
brew install nasmInformation
- Publisher
- NASM
- Licence
- 2-clause BSD
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, 32-bit
- Installer
- EXE (NSIS)
- Version
- 3.02
- Released
- June 29, 2026
- Added to the catalogue
- March 30, 2021
- Versions listed
- 7
- Updates / year
- 1.3
- Website
- nasm.us
- winget ID
- NASM.NASM
- Scoop package
- main/nasm
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is NASM free?
Yes. NASM is open-source software under the 2-clause BSD licence.
Is NASM safe to download?
The download comes from nasm.us, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install NASM with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can NASM be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does NASM run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit and 32-bit version through emulation.
Where can I download an older version of NASM?
The versions page lists all 7 versions with links to their official installer files, back to March 30, 2021.