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Dev tools · August 31, 2026

Goon

Multiple Video and Photo Viewer

What it does

A viewer for those to prefer to watch multiple videos or photo galleries at once. Supports multiple windows as well for multiple monitors.

Goon is free and open source, and it is not code‑signed or notarized (Apple and Microsoft both charge money for that). So the very first time you open it, your operating system will refuse and show a scary warning. Nothing is wrong with the app - you just have to tell your OS you meant to run it. Here is exactly how. xattr -d -r com.apple.quarantine /Applications/Goon.app Put Goon somewhere other than /Applications? Type xattr -d -r com.apple.quarantine (with a trailing space), then drag Goon.app from the Finder onto the Terminal window - it fills in the path for you. Then press Return . Double‑click Goon again. It opens. You only have to do this once. macOS remembers. Prefer…from samanthajo2.github.io

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