Works with Unity 2017.3!
Ferr Vertex Painter is a streamlined, intuitive tool for painting mesh vertex colors in Unity! While Vertex Painter is primarily geared towards texture channel blending, it can also paint flow or color data, and has extra hooks allowing you to paint whatever data you want!

[ Site | Tutorial Videos | Demos ]

Features:
-Extrmely fast and intuitive controls!
-Blend together up to 4 textures!
-Paint flow information!
-Preserve painting through large mesh edits!
-Works great with Ferr2D!
-Works great with SuperCube too!
-Multiple texture blend modes!
-Standard and legacy shader support!
-Brush customization options!
-Easy to extend and modify!
-Modular shader code for custom shaders!
-Full source provided!