Awesome

UnityEventVisualizer

Now also available at the Unity asset store! (free, reviews appreciated)

<h2>What</h2> Have you ever come across a project that abuses linking <b>UnityEvents</b> in the inspector and now you can not find who is calling what? <b>Unity Event Visualizer</b> is a visual tool that allows you to see all the UnityEvents in a scene at a glance and when they are being triggered. It creates a graph in which nodes are <b>gameobjects</b>, outputs are any type of UnityEvent (custom ones supported as well!) and inputs are methods.

Animation

SceneView

<h2>Install</h2>

Via OpenUPM

The package is available on the openupm registry. It's recommended to install it via openupm-cli.

openupm add com.mefistofiles.unity-event-visualizer

Via Git URL

Open Packages/manifest.json with your favorite text editor. Add the following line to the dependencies block.

"com.mefistofiles.unity-event-visualizer": "https://github.com/MephestoKhaan/UnityEventVisualizer.git"

Via .unitypackage

Grab the installer from the <b>Releases</b> section and import it into your project.

Via Unity asset store

Download it directly from the Unity asset store.

Select Windows/Events Graph Editor you can open the graph.
Select any root gameobject(s) and click on Rebuild on selected hierarchy to generate a graph of all events being fired by the selected hierarchy, or Rebuild JUST selected to generate a graph of all events being fired by exactly the selected gameobjects. You can deselect everything and click any of the buttons to generate the graph of the entire scene, but beware for massive graphs!
Click on any node to highlight that <b>gameobjects</b> in your hiearchy. Alternatively right-click on any element in the hierarchy and select UnityEventGraph/FindThis to highlight it in the graph. Or UnityEventGraph/Graph Just This and UnityEventGraph/Graph This Hierarchy in order to create a graph starting just in this gameobject or any of its children respectively.
Scene View https://www.youtube.com/watch?v=IhG0LRFLmdo.

Pull requests welcome!

Original idea by SoylentGraham
Code by Luca Mefisto (myself)
Inspired by Keijiro Takahashi
SceneView representation by Andrés Leone