[Citadel Development] (null)

[IGnatius T Foobar]

There is a page at https://www.citadel.org/appimage.html which contains the
downloads and instructions for the AppImage distribution of Citadel.  This
is actually the final location; it simply isn't linked from the main part
of the site yet. 
  
 If you have a clone of your live system and it was built using one of the
supported architectures (64-bit AMD/Intel or 32-bit ARM) then you should 
definitely
give that a try.