For sheer volume, is hard to beat. More than 100 themes are available, plus there are separate bundles of animated backgrounds, clip-art, 3D objects, and more. Most themes are available for Keynote '08 or '09 only and come in standard 4:3 and widescreen HD resolutions. Themes provide up to 26 slide templates each. Designs are a mixed bag----many are flat and simple, but others, especially those imitating real-life textures like fabric and stone, are more stylish.

Prices: Individual themes, $10; bundle of 52 animated themes, $40; bundle of 60 static themes, $30; 115 QuickTime animations, $25; 181 3D objects, $25; collection of all four bundles, $70.

offers 50 crisp, colorful themes focused on natural textures. Each theme is designed for Keynote '08 or later and contains up to 14 different slides at standard and HD sizes. Themes are sold only in bundles.

Prices: Set of 25 static themes, $39; set of 15 animated themes, $39; set of 15 animated themes plus hundreds of photos, animations, and backgrounds, $99; set of more than 100 3D rendered objects, $39; set of 35 animated backgrounds, $49; set of 100 animations, $45.