Best all-in-one customer support service add-on?

[RealCasper]

Heyo!

I'm looking for some kind of add-on that comes close to what Kayako offers for customer support (here), because I want an easy way to manage their request and problems, so I can bring them a prompt solution and keep them happy and coming for more, you know what I mean!

I see that the marketplace has different online chat and customer support solutions, but I'm looking for something that includes it all, because it is a mess to manage it all on their own, so I want something that integrates in all in one single solution. I hope you get my point.

That's all my friends, thanks a lot in advance and I'm looking forward to hearing to your suggestions