Unity provides standard spline asset,
use BGCurve only if Unity spline misses some feature
BGCurve
Free Bezier spline editor for Unity game engine
Version:
1.2
Github:
Unity Discussions:
Tested on:
IOS, Android, WebGl, Net Core
Known issues
Current implementation may have some problems with Undo operation (Ctrl+z), which can result in a broken curve's GameObject in some scenarios