This Photoshop script can do everything that the Rounded Rectangle Radius Resizer script can, and a lot more!

Round the corners of any polygonal shape

Multiple corner styles

Settings are saved to the Layer so they can be modified

Smooth multiple sub-paths in the same layer

Smooth only the selected sub-paths

As with the Rounded Rectangle Radius Resizer script, you can also

View the pixel radius of existing rounded rectangles

Edit multiple layers at once

Apply a different radius to each corner and/or subpath

I have a couple more ideas for another update. Let me know if there are any other options that would be useful.

Download “Corner Editor” script (win/mac CS5/CS6/CC)