A free 4 Column Photoshop grid template for a 1024×768 screen resolution by Ray Gulick.
Gridmaker for Photoshop CS4
GridMaker is a script for Photoshop which allows speedy development of simple grids.
Photoshop 975px Grid System (12)
Adobe Photoshop file with a grid system for a 975px wide page that is divided into 12 columns and rows using the Rule of Thirds (Golden Ratio). Includes a 16px baseline grid.
Photoshop 975px Grid System (6)
Adobe Photoshop file with a grid system for a 975px wide page that is divided into 6 columns and rows using the Rule of Thirds (Golden Ratio). Includes a 16px baseline grid.

















