An opinionated build system for Arma 3 mods.
Publisher’s description
What is HEMTT?
HEMTT by BrettMayson is open-source Windows software. It is written in Rust.
Installation and requirements
The publisher provides Portable installers for 64-bit Windows. It runs without installation (portable).
Updates and version history
The current version is 2.1.0, released on October 24, 2026. The version history goes back to July 21, 2023: 51 releases, all linked to the official files. That is about 16 releases a year. The last update is less than a month old.
Popularity and file types
The Chocolatey package has been downloaded 215 times. The source code on GitHub (BrettMayson/HEMTT) has 158 stars.
Project description on GitHub: “Build System for Arma 3”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Portable: runs without installation
- Frequent updates (about 16 a year)
Cons
- No native ARM64 build
In short: HEMTT is an open-source Windows tool for 64-bit PCs. It is actively maintained.
Is HEMTT safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
9AA688E7A999209A19719CAE186E0B0153BFB1DD85BF1AFD5794725440EAF348· 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 51 versions ›51 versions over 3 years · about 16 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.1.0Latest | October 24, 2026 | — | 64-bit ZIP |
| 1.22.0 | September 18, 2026 | — | 64-bit ZIP |
| 1.21.0 | August 11, 2026 | — | 64-bit ZIP |
| 1.20.1 | July 24, 2026 | — | 64-bit ZIP |
| 1.20.0 | July 22, 2026 | — | 64-bit ZIP |
| 1.19.1 | May 12, 2026 | — | 64-bit ZIP |
| 1.19.0 | May 2, 2026 | — | 64-bit ZIP |
| 1.18.3 | April 6, 2026 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id BrettMayson.HEMTT -echoco install hemtt -yRelated guide: How to use winget: install and update apps
Information
- Publisher
- BrettMayson
- Licence
- GPL-2.0
- Price
- Free
- Source code
- github.com/BrettMayson/HEMTT
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- Portable
- Version
- 2.1.0
- Released
- October 24, 2026
- Added to the catalogue
- July 25, 2023
- Versions listed
- 51
- Updates / year
- 15.6
- Chocolatey downloads
- 215
- GitHub stars
- 158
- GitHub forks
- 57
- Website
- github.com
- winget ID
- BrettMayson.HEMTT
- Chocolatey package
- hemtt
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is HEMTT free?
Yes. HEMTT is open-source software under the GPL-2.0 licence.
Is HEMTT safe to download?
The download comes from github.com, 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 HEMTT 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.
Does HEMTT run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of HEMTT?
The versions page lists all 51 versions with links to their official installer files, back to July 21, 2023.
Can I use HEMTT without administrator rights?
Yes, it is portable: unpack and run it.