1)   LIVECHAT ContactCenter 5.5
LIVECHAT Contact Center is a live chat software solution to provide online customer service and support sales through website. Contact Center provides website visitors with free contact channel with the website owner, customer support or sales agents

 2)   LivehelpGenie 3.2
Live chat tool for real time text based chat for customer support and sales. Since LivehelpGenie is a service you need to signup in order to use the software. Visit http://www.livehelpgenie.com/en/freetrials.html to activate your free account.