Alscenic

JSONObject

The JSONObject class/library for Unity

Unity-Box-Projected-Lighting

FlaxEngine

Flax Engine – multi-platform 3D game engine

Mathfs

Expanded Math Functionality for Unity

Steamworks.NET

Steamworks wrapper for Unity / C#

Deform

A fully-featured deformer system for Unity that lets you stack effects to animate models in real-time

xNode

Unity Node Editor: Lets you view and edit node graphs inside Unity

fivem-appearance

👀 A flexible player customization script for FiveM.

gta-v-data-dumps

GTA V Data dumps useful for modding & scripting

Texty

Spiraloid-Toolkit-for-Blender

Bay Raitt's Custom Blender Setup. Behold the rewritten hotkeys for those with Maya, Zbrush, Mirai, Wings3D, 3DCoat, SFM, Maya and Unity muscle memories.

UberAudio

An open-source audio workflow extension for Unity

unity-toolbar-extender

Extend the Unity Toolbar with your own Editor UI code.

Crystal-Caustics

💎 Approximated crystal caustics effect in Unity.

Delight

Delight is an open source component-oriented framework for Unity.

UnityArcRayCast

DataRenderer2D

make mesh like line, polygon, etc in unity3d

Typogenic

Signed-distance field text rendering for Unity

Unity_AudioRig

Unity3D Audio Utility

unity-delaunay

A Delaunay/Voronoi library for Unity, and a simple destruction effect

AmplifyMotion

Full source-code for Amplify Motion plugin for Unity

lospro

Los pro

Traverser

A player traversal toolkit for Unity.

floorplan

A Sims-Like Unity Level Design Plugin

UnityMeshSimplifier

Mesh simplification for Unity.

dotween

A Unity C# animation engine. HOTween v2

Dialogue

Node based dialogue system

SceneKeeper

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

awesome-unity3d

A categorized collection of awesome opensource unity3d repos

Chisel.Prototype

Work in progress prototype for the Chisel Level Editor, for Unity