// skirmisher

Install & verify

Skirmisher is free — no in-app account or licence key. Download the installer for your OS, then follow the one-time first-launch step below.

⚠️

Why the security warning? Skirmisher is an independent build that isn’t code-signed yet, so macOS Gatekeeper and Windows SmartScreen show a warning the first time you open it. It’s expected — the steps below get you past it. Signed builds are planned.

macOS (Apple Silicon or Intel)

  1. Download Skirmisher-1.0.1-arm64.dmg (Apple Silicon) or the Intel build.
  2. Open the .dmg and drag Skirmisher into Applications.
  3. First launch: open Applications, right-click (or Control-click) Skirmisher → Open, then click Open in the dialog. (Double-clicking the first time shows “unidentified developer” and won’t open — the right-click → Open is the one-time way past Gatekeeper.) After that, open it normally.

Windows (10 / 11)

  1. Download Skirmisher-Setup-1.0.1.exe.
  2. Run it. If Windows protected your PC (SmartScreen) appears, click More info → Run anyway, then finish the installer.
  3. Launch Skirmisher from the Start menu.

Linux

  • AppImage: download Skirmisher-1.0.1-x86_64.AppImage, make it executable (chmod +x), and run it.
  • Debian/Ubuntu: download the .deb and install it (sudo apt install ./Skirmisher-1.0.1-amd64.deb).

Verify your download

Because the installers are unsigned, the checksum is how you confirm your download is bit-for-bit what we published. A SHA256SUMS.txt is published alongside the installers here. After downloading, compute your file’s SHA-256 and compare it with the matching line — any difference means a corrupted or tampered download: delete it and download again.

macOS    shasum -a 256 Skirmisher-1.0.1-arm64.dmg
Windows  certutil -hashfile Skirmisher-Setup-1.0.1.exe SHA256
Linux    sha256sum Skirmisher-1.0.1-x86_64.AppImage

The SHA-256 for each build is also shown under its download button on the Skirmisher page.

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