Download Antra-Linux.AppImage, then run:

chmod +x Antra-Linux.AppImage
./Antra-Linux.AppImage

If Ubuntu blocks running it from ~/Downloads, move it first:

mv ~/Downloads/Antra-Linux.AppImage ~/
cd ~
chmod +x Antra-Linux.AppImage
./Antra-Linux.AppImage

If AppImage support is missing, install FUSE once:

sudo apt update
sudo apt install libfuse2

Download Antra-macOS.dmg, open it, and drag Antra into your Applications folder.

On first launch, macOS may block the app with an "Apple could not verify" warning. To open it:

1. Open Applications
2. Right-click Antra
3. Click Open
4. Click Open again in the warning dialog

Useful notes for macOS:

• If the app still does not open, go to System Settings -> Privacy & Security and click Open Anyway if that option appears.
• You may need to move the app out of the DMG and into Applications before opening it.
• This build is not notarized yet, so the first-run security prompt is expected.