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MasterUnityHandles

Unity custom handles examples, more information here: Mastering UnityEditor Handles

Curve Handle

A Handle for AnmationCurve

Keyframe Handle

A Handle for AnmationCurve's keyframes

Free 2D Move Handle

A handle that can be moved on a rotated plane

Custom Snap handle tool

Add a snap option (cylinders on each axis) to the default move tool