Ferr2D Terrain Tool (Paid)

Pixel Camera 2D

A Pixel Perfect Camera for 2D Games in Unity.

Tiled2Unity

Takes your Tiled files and creates Unity prefabs from them that are easily placed into your Unity scene. Complex collision is supported through Unity’s PolygonCollider2D class

2D Rope System (Paid)

Scripts for creating any type of 2D ropes in the editor or during runtime

Unity Anima2D

Advanced skeletal animation editor with support for both per-object and skinned mesh animation with an integrated in-editor skinning tool