What is 13May Joint2D Gizmos
13May Joint2D Gizmos is a replacement for the built-in Unity gizmos of Joint2D-derived classes. It shows more information and allows a direct manipulation of anchors in Scene View.
You can see a demo video here: http://www.youtube.com/watch?v=P-HP5Fvj0Ww
You can download a using guide from http://altprog.com/13may/unity-assets
Important Notes
MANIPULATING HINGEJOINT2D IN PLAY TIME
In the current version, manipulating HingeJoint2D in play time doesn’t make 13May HingeJoint2D Gizmo recalculate the limit angles.
WHEELJOINT2D
In the current version, WheelJoint2D is not supported.