Message System Dispatcher for Unity

Event.cs

using System;

[Serializable]
public class Event
{
    public string name;
    public Action method;

    public Event(string n, Action m)
    {
        name = n;
        method = m;
    }
}

EventManager.cs

using System;
using System.Collections.Generic;
using System.Linq;

public class EventManager
{
    private static List<Event> Listeners = new List<Event>();
    private static List<ObjectEvent> ObjectListeners = new List<ObjectEvent>();

    public static void AddListener(string name, Action method)
    {
        if (method != null)
        {
            if (!Listeners.Exists(l => l.name == name && l.method == method))
            {
                Listeners.Add(new Event(name, method));
            }
        }
    }

    public static void RemoveListener(string name, Action method)
    {
        if (method != null)
        {
            if (Listeners.Exists(l => l.name == name && l.method == method))
            {
                Event tmp = Listeners.Single(l => l.name == name && l.method == method);
                Listeners.Remove(tmp);
            }
        }
    }

    public static void SendMessage(string name)
    {
        if (Listeners.Count > 0)
        {
            for (int i = 0; i < Listeners.Count; i++)
            {
                if (Listeners[i].name == name)
                {
                    Listeners[i].method.Invoke();
                }
            }
        }
    }

    public static void AddListener(string name, Action<object> method)
    {
        if (method != null)
        {
            if (!ObjectListeners.Exists(l => l.name == name && l.method == method))
            {
                ObjectListeners.Add(new ObjectEvent(name, method));
            }
        }
    }

    public static void RemoveListener(string name, Action<object> method)
    {
        if (method != null)
        {
            if (ObjectListeners.Exists(l => l.name == name && l.method == method))
            {
                ObjectEvent tmp = ObjectListeners.Single(l => l.name == name && l.method == method);
                ObjectListeners.Remove(tmp);
            }
        }
    }

    public static void SendMessage(string name, object param)
    {
        if (ObjectListeners.Count > 0)
        {
            for (int i = 0; i < ObjectListeners.Count; i++)
            {
                if (ObjectListeners[i].name == name)
                {
                    ObjectListeners[i].method.Invoke(param);
                }
            }
        }
    }
}

ObjectEvent.cs

using System;

[Serializable]
public class ObjectEvent
{
    public string name;
    public Action<object> method;

    public ObjectEvent(string n, Action<object> m)
    {
        name = n;
        method = m;
    }
}