AmaHow

Ghostscripter seems to be the main competitor to Associate-o-Matic. For hardcore coders, this script offers the benefit of providing the source code so that customized coding changes can be made. (AOM code is encrypted.) Ghostscripter seems to have a lot of loyal followers at the Digitlapoint forums. Here’s a summary of features:

Built-in shopping cart allows customers to add their product to the cart and
leave your website only when ready to checkout at Amazon.com
Amazon XML pages cached to speed up loading times
Product information retrieved via XML
All pages are easily modified via the built in WYSIWYG editor (i.e. 6+)
Have mutiple templates installed, insantly changeable through the admin panel.
Optional Newsletter system
Optional Dynamic Title, Sort Box, Meta Keywords and Path bar
Automated Error reporting to your email
Custom Categories & Products
Random Hot Deals & Featured Items.
Automatic DB fill for Hot Deals & Featured Items.
Supports US, UK, DE, CA, FR and JP
All languages in language files for easy change
Powerful Admin Panel
Optional mod_rewrite for search engine friendly urls
5 Templates for your to choice from.
1 Year of Updates/Fixes
1 Year of Technical Support
Amazon Shop Minimum Requirements – MySQL and php 4