Most starred plug-ins
StuffCounter
Get a list of everything in your park with the amount.
Willbycraft OpenRCT2-Suicide-Booth-Manager
Really badly coded plugins for OpenRCT2
Clifforus OpenRCT2-floodfill
Floodfill plugin for filling in an object across open areas in OpenRCT2
thiebert 
CorySanin MoveViewport
An OpenRCT2 CCTV plugin
telk5093 
Umdlye openrct2-vandalism-manager
Plugin for OpenRCT2 to manage park vandalism
rachaelspooky openrct2-peep-vacuum
peep vacuum plugin for OpenRCT2