Sorry for the late response
End4 is the first one that comes to mind since the dev has made a shell in most big widget framworks at this point. Great project to take inspo and some code from but AGS/EWW shells are archived
Hyprpanel is still being maintained and probably the best base to chose if your going with AGS
Otherwise check r/unixporn and sort top with the keyword "AGS" or "EWW" and your find a couple more