There are thousands of web scripts in development and many more that are created every day. We do not have the ability to archive and support every script so we suggest that you download the script from the developers website. The scripts will come packaged with a set of instructions that will walk you through a complete install.
There are several websites that rate and review scripts so that you can get an idea if the script is right for you and your site. Here are a couple script repositories to get you started.
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