I would recommend https://www.tawk.to/ it gives you most of the features others are selling free of charge. It even has an android app to help you easily give support to your visitors while on the go.
I also like tawk.to its really easy to use I was looking at them for a while for a good one to buy but then I decided I would use tawk.to
I know of all of the premium once I am going to be offering them for a resell option soon with my new buisness I am going to be doing reselling software dpp-products it will be called
More low cost chatting software out their then I thought. Although for me the question is still rather it is effective. Even if you have 24/7 out sourced people manning it to me their replies cheapen your service. So I honestly feel if your going have a chat you need first be able to afford in house support on it or perhaps an option on a ticket to give them a chat option to help them solve their issues.
Jivo was alright, but I just didn't get it. They packed far too much into 'premium', started spamming once that free trial died, and it was ugly.
Sticking with tawk.to for now. We'll see how that turns out
I used Livechatinc for a bit, but now switched to tawk.to. Very nice and user friendly to me. It's free, but they do have some paid packages as well. Either route, I think tawk.to does the job well.