Many websites, such as ervices use Live Chat system to convert their visitors in to customers. Commercial options such as cSupport, LiveChat etc are good. However, there are free/open source options that are equally capable that need no investment or money!
mibew Messenger
It is a live support system written in PHP/MySQL, and a powerful Chat real time system. Has lots of features such as;
- Real-time chat (without page refresh) 400
- Unlimited operators, chats, and users
- Unlimited departments (groups of operators)
- Priority queue of visitors
- Localized to 10+ languages, unicode support
- Runs on your server and domain
- Easy-to-modify source code, etc.
There are a lot of features that make mibew,a worthy alternative to many commercial support tools.
Check the Demo

