To launch it you need to make it executable first, either:
From the GUI Shell, right click on Properties, and on Permissions tab enable “Allow executing file as program”
From terminal, go where the downloaded file is, and type:
chmod a+x ./Jubler-*.appimage ; ./Jubler-*.appimage
Generic Java, if your system is not listed above; embedded preview is not supported.
Part of this project is done thanks to [CrossMobile](https://crossmobile.tech), the only truly native mobile cross-platform framework.