OD Circlify takes selected points (in order), and arranges them in a circle.

Options:

• Points have to be selected in order (circular)
• Radius: By default is decided based on the distance of the first point, to the center point of all points. Optionally, you can specify a radius of the circle
• Mode: Even Length makes sure that all edges have the same length, whereas uneven edges project the points without caring about the edge lengths

Here's a how-to video showing OD Circlify in action.