Is there an alternative to Unity (top) panel that supports Mac style application menu integration? I'd like to have a Unity-like user experience on Debian.
What you maybe want is Global menu?
KDE 5.9 supports global menu.
Xfce, LXDE, MATE (but is GTK+ 2 only): link
Here's a comparison of the alternatives from 2011. This list is still accurate.
- Classic GNOME Panel