Links:

  WebUMake Instant Helper  New!
WIH makes it easy for visitors to your site to chat with you, instantly, live! Understand how your visitors move around your site as you watch them interactively. You will know who is revisiting, who you have chatted with previously and be ready to offer them appropriate help and advice
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Script cost : $200
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  TalkNow  New!
Like Humanclick.com, TalkNow not only allows you to add live customer service to your web site, but also allows you to host unlimited customer support systems for an unlimited number of web sites.
Rating  
Script cost : 2000.00
Cost of script installation : $300  (Order installation)
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  InstantTalk  New!
InstantTalk, which is offered in conjunction with Alertware, is a customizable application that allows users to ask questions online through as small pop-up window, and receive instant responses from your customer service representatives.
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Script cost : $99.95
Cost of script installation : $60  (Order installation)
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  FollowUp  New!
This script allows you to automate the process of following up with customers. Simply write your follow up letters, upload them to the server, and the script does the rest. Users are sent follow up letters at intervals YOU specify. They also may OPT OUT which eliminates spam problems.
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Script cost : $15
Cost of script installation : $35  (Order installation)
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  Solution Scripts: Simple-Support  New!
This system organizes a companies support email into easy to manage tickets assigned to support representatives. With a mysql back end and html output controlled via templates, Simple-Support is easily customized and configured to the look and feel of any site.
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Script cost : $599 / $799
Cost of script installation : $80  (Order installation)
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Click Here for Ultimate Bulletin Board script!