Bevel Curve Tools is addon for easily create, edit, and convert bevel object for curve. I mainly created this for my sculpting purpose, but it can be useful for anything else. You can see the demo in the video below.
Github page: https://github.com/ucupumar/bevel-curve-tools
Update: Now this addon works on both Blender 2.79 and 2.80
If you have any suggestion, bug report, or anything else, you can reply on this thread or post it directly on github page.
Have a nice day!