The GTK component of unison runs a GUI interface but is missing a menu entry.
Created attachment 266995 [details, diff]
Patch to add desktop entry and icons
Created attachment 266997 [details]
Unison desktop entry
Created attachment 266999 [details]
Unison icon (SVG)
Created attachment 267001 [details]
Unison icon (XPM)
Copied from Ubuntu's packaging
Thanks for submitting your enhancements, assigning to unison maintainers
That's a long time to add a desktop menu entry...