Hidden Unity Gems on gitHub

Please post here open source unity addons you found on github and that you actually use.

My favourites (tried and tested in Unity 2020.3).

PlayerPrefs Editor
Tool extension for the Unity Editor that enables easy access to the player preferences over a simple UI. Allows to view, add, remove and modify entries on the development machine.


https://github.com/Dysman/bgTools-playerPrefsEditor

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UEvent
UEvent is a general message event component that can be used in unity and native .Net environment. It can provide powerful decoupling capability through event mechanism.

https://github.com/ls9512/UEvent

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Particle Effect For UGUI
This plugin provide a component to render particle effect for uGUI in Unity 2018.2 or later.
The particle rendering is maskable and sortable, without Camera, RenderTexture or Canvas.


https://github.com/mob-sakai/ParticleEffectForUGUI

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WDataTable
WDataTable, a table UI component for Unity3D.


https://github.com/warmtrue/WDataTable

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KamaliDebug
Easy way to Debug Colorful Texts in Unity Console.


https://github.com/smkplus/KamaliDebug

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Unity-UI-Rounded-Corners
These components and shaders allows you to add rounded corners to UI elements!


https://github.com/kirevdokimov/Unity-UI-Rounded-Corners

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Davinci
A powerful, esay-to-use image downloading and caching library for Unity.



https://github.com/shamsdev/davinci

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Favorites List
Just drop your favorite objects onto the list. If you quickly want to access them, click on its button in the list and the object will be selected (and pinged).


https://github.com/BrokenVector/favorites-list

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https://github.com/dbrizov/NaughtyAttributes


NaughtyAttributes is an extension for the Unity Inspector.

It expands the range of attributes that Unity provides so that you can create powerful inspectors without the need of custom editors or property drawers. It also provides attributes that can be applied to non-serialized fields or functions.

 

MultiTag System for Unity
This package allows you to Tag Game Objects with ScriptableObjects.

Code (CSharp):

1.         // Check for Tag
2.         if (_enemy.HasTag(_zombieTag))
3.         {
4.        
5.         }
6.        
7.         // Check for Multiple Tags
8.         if (_enemy.HasTags(_allEnemiesTags, allRequired: false))
9.         {
10.        
11.         }
12.        
13.         // Adding Tag
14.         _enemy.AddTag(_zombieTag);
15.        
16.         // Removing Tag
17.         _enemy.RemoveTag(_zombieTag);

https://github.com/IntoTheDev/MultiTag-System-for-Unity

 

Here are two useful effects for the built-in renderer. They're not new, but I've used these both in Unity 2019 and they still work fine:

Screen space multi-scattering:
https://github.com/OCASM/SSMS
Basically fog with depth-based convolution. The convolution imitates the way that light scatters through water droplets, so it looks much more moist and steamy then depth fog. Regular depth fog has no scattering, so it looks more dry and hazy in comparison, like dust in the desert.

Volumetric lighting:
https://github.com/SlightlyMad/VolumetricLights

Blender Unity FBX:
https://github.com/EdyJ/blender-to-unity-fbx-exporter
This is actually a Blender plugin, but extremely useful if you use Blender with Unity. This will allow you to export a blender model to FBX that's actually compatible with Unity's Coordinate system. This is especially useful for character models when you want to do procedural animation or something.