1. Jujuber zen cart templates http://template.jujuber.com

There is only one free zen cart template on this website til now, but this one is the most beautiful template I have ever seen, below is a screenshot,
need no database support, cute breadcrumb feature,and they had a live show shopping store,http://live.jujuber.com

2.Official zen cart templates http://www.zen-cart.com/index.php?main_page=index&cPath=40_53 , collected many of templates, but from my point of view, they are not professional, you even can described ugly.

3. ichoze zen cart template zen-cart-templates.ichoze.net, there are two free zen cart template,Acadame and Atheme, maybe Acadame is a most widely used zen cart template, at least this is the first template I adopted.

4.zen cart power template www.zen-cart-power.com, a good website, but there are no many peoply knew this site.

5.http://www.zenflavor.com, I am not familiar with this site, they seems both povide paid & nonpaid templates.

6. www.zencarttemplates.info , they did not invent any thing, just collect most of above templates and give a “what you see is what you get” functionality.