Magic UV's subtitle is "Copy/Paste UV", but it does a lot more than that.
This add-on's features are as follows.
- Copy/Paste UV Coordinates
- Copy/Paste UV Coordinates (by selection sequence)
- Flip/Rotate UVs
- Transfer UV
- Texture Lock
- Manipulate UV with Bouding Box in UV Editor
You can tweak UV from 3D View. This feature is based on script whose author is @kgeogeo and @mem. Thanks for their great effort.
Copy/Paste UV Coordinate
Copy/Paste UV Coordinate (by selection sequence)
Manipulate UV with Bouding Box in UV Editor
Move UV from 3D View