Top 5 editor-tool open source projects

Unity Editor tool to create Categories in the Hierarchy. The Categories work as dividers between GameObjects.

This tool enables you to add bookmarks to your project files so you can reach them easily.

A simple tool that keeps your scene state (Hierarchy/Selection) exactly as you left in between switching scenes on editor or play mode.

a Borderlands 2 inspired, part-based random weapon generator for Unity Engine

Open-source node-based tool for developing branching conversation trees