FLAGR

Universal Switch Finder

Look up install, uninstall, and command-line switches for MSI, InstallShield, NSIS, Inno Setup, WiX, and more. Search by name or switch — or drop in the installer and let FLAGR find every flag it exposes.

Drop an installer file here, or click to browse Scanned in your browser only — never uploaded anywhere. Works even on unrecognized installers.
Click an engine to view its install / uninstall switches

Can't identify the installer?

If the filename doesn't give it away, these checks usually will.

Ask the installer directly

Most engines print their own usage text. Try /?, /help, or --help — it often names the engine outright.

Inspect the binary strings

Open the .exe in 7-Zip or a strings viewer and look for text like "Inno Setup", "Nullsoft", "InstallShield", or "Wise Installation" near the top of the file.

Check file properties

Right-click → Properties → Details — the Comments or Product Name field often names the packaging tool.

Try the universal guesses

Cycle through /S, /s, /silent, /verysilent, /quiet, -q, --silent — one of these covers most third-party .exe installers.

Disclaimer

FLAGR is independent — not affiliated with, endorsed by, or sponsored by Microsoft, Flexera/InstallShield, WiX, NSIS, Igor Pavlov/7-Zip, or any other named vendor. Switches are compiled from public documentation and common practice; behavior varies by version, so test in a non-production environment before mass deployment.

File detection runs entirely in your browser and is never uploaded anywhere. Engine, flag, and usage-text detection are heuristic, not guaranteed — confirm with the installer's own /? or --help output before scripting a deployment.