Need online customer support tool for my website
For mobile users eAssistance Pro is better choice, it supports to iPhone, android & Blackberry.
The process is very easy to integrate live chat software on website.
First, free sign up here https://account.eassistancepro.com/register.php
Get confirmation email and chat code.
Copy & paste on web pages where you wish to add.
Then, chat button will show on web pages.
After that you can start live chat
Find more https://www.eassistancepro.com/