Download

Take the zip, run it, done.

There is no installer and no runtime to fetch: the .NET runtime is bundled and the whole app lives in one folder you can move, copy to a USB stick or delete when you are done.

v0.9.0 release v0.9.0 for Windows 10/11 x64
File
nimby-0.9.0-win-x64.zip
Size
~76 MB
Published
9 Nov 2026
SHA-256
896d2f3839997cbbed4cd01c12c65ed903a98e5ed42d287195210ca4f1a1cc4f

The version, file name, size and date above are read from the newest GitHub release when JavaScript is available; otherwise the values baked into this page are shown. The checksum is always in SHA256SUMS.txt, attached to the release. Downloads come from GitHub Releases.

Verify before you run it

The build is not code-signed, so Windows SmartScreen may warn on first launch. Compare the hash instead of trusting the download blindly.

# PowerShell, in the folder you downloaded to
Get-FileHash .\nimby-0.9.0-win-x64.zip -Algorithm SHA256

Compare with the value above, or with the line for this file in SHA256SUMS.txt. If they differ, delete the zip and download again.

Why unsigned? Code signing certificates cost money per year and this is a free, community-maintained tool. Reproducible hashes and the public source are what you get instead: the complete source for every release is on GitHub, and the checksum is attached to every release.

What is in the zip

Extract it anywhere writable — for example C:\Games\Nimby or a USB stick.

PathWhat it is
Nimby.exethe desktop app
bin\nimby.exethe command line tool the GUI drives — keep it in bin
data\portable configuration and hash cache, created on first run
assets\branding\logos and marks used by the About page
docs\the tutorial, the repository format notes and the screenshots
LICENSE, LICENSE-ADDITIONAL-TERMS.md, NOTICE, THIRD-PARTY-NOTICES.md, LICENSES\licence, attribution terms and third-party notices

Portable by design

Configuration, the hash cache and cached repository artwork stay in data\ next to the executable. Move the folder and your repositories, paths and parameters move with it. If the folder is read-only (Program Files), Nimby falls back to %APPDATA%\Nimby.

Updating

Extract the new zip over the old folder, keeping data\. Mods, the shared store and the tracking index stay in your workspace, so nothing is reinstalled. nimby update --check tells you what changed in the repository.

Uninstalling

Delete the folder. Nothing is registered in Windows, no service runs, no files are written to Program Files or the registry. Remove your workspace and store folders separately if you want the disk space back.

Requirements

To run

  • Windows 10 or 11, x64
  • Arma 3 from Steam (for launching; installing works without it)
  • No .NET installation, no Visual C++ redistributable

To launch mods

  • A workspace folder on a local NTFS drive for hardlinks and junctions
  • Optional: a shared store folder to keep one copy per file
  • Servers and launch parameters come from the repository itself

Building from source instead? Rust stable, the .NET 10 SDK and MSVC or MinGW-w64 are enough — instructions are in the README.