ThrobberUI of two arrows that rotate clockwise.
ThrobberUI that shows 3 arcs detaching from a circle and floating outward while fading away.
ThrobberUI showing 3 pivoting circles.
ThrobberUI showing 3 circles pulsing outward that also move in a clockwise rotation.
ThrobberUI that paints an inner and outer Sierpinski triangle rotating clockwise and spiraling inward.
ThrobberUI renders pivoting lines of a common 5-point star.
JThrobber.