If you want your product listing to be laid out in rows and columns, this would be the mod that will do it!
Zencart comes with your product listing showing on one row. With this mod, you can show the picture, price, short description (from your product info page) in columns across the page and then down by rows.
Please note, depending upon how your titles and descriptions are set up, the alignment on products put in the grid may not always "look" the same.
V. 1.3.6 +