Reveal Persistent Data Directory for current project in Unity

RevealPersistentDataDirectory.cs

using UnityEngine;
using UnityEditor;
using System.Diagnostics;

public class RevealPersistentDataDirectory : MonoBehaviour {
	[MenuItem("Assets/Reveal Persistent Data Directory")]
	static void DoMenu() {
	    Process process = new Process();
	    process.StartInfo.FileName = ( (Application.platform == RuntimePlatform.WindowsEditor) ? "explorer.exe" : "open" );
	    process.StartInfo.Arguments = "file://"+Application.persistentDataPath;
	    process.Start();
	}
}

using System.IO;
using UnityEditor;
using UnityEngine;

public static class RevealPersistentDataDirectory
{
    [MenuItem("Tools/Reveal Persistent Data Directory")]
    private static void DoMenu()
    {
        // Hack to RevealInFinder() open the specified folder not parent folder
        string path = Path.Combine(Application.persistentDataPath, "hack");
        EditorUtility.RevealInFinder(path);
    }
}