Viscous liquid running down glass in ropes rather than a sheet, coloured by Beer-Lambert absorption so a thick part is deeper and more saturated, with the runs pinned by surface tension at the line where the words go.
Drawn with: a WebGL2 shader.
Reacts to and looks like: gpu, webgl2 and audio-reactive.
Family: Visualiser.
Runs in your browser. The preview above is the same program the renderer uses.