Simple Decursive is a minimized, stand alone replacement for Decursive grid based UI for dispelling. Click on the highlighted tile to dispel.
Features: 5-column party layout, 8-column raid layout, draggable positioning, and optional “hide when safe” behavior.
Original decursive: https://www.curseforge.com/wow/addons/decursive. This addon only provides the basic behavior of dispelling via custom grid/button display.