Installing Ghidra as a self-contained OSX .app (without contaminating your system with having to install Java):

Prebuilt (9.0.2)

Download

Build your own

1. Download and extract the launcher AppleScript template app below. Optionally modify Ghidra.app/Info.plist to your liking.
2. Download the latest OpenJDK and extract it to Ghidra.app/jdk. Make sure Ghidra.app/jdk/Contents/Home/bin/java exists.
3. Download the latest Ghidra and extract it to Ghidra.app/ghidra. Make sure Ghidra.app/ghidra/ghidraRun exists.
4. Copy Ghidra.app to your Applications directory.

Note that the template .app is just a standard AppleScript generated .app. If you don't trust the binary, you can build your own with the provided AppleScript.