SmugMug extension for Chrome
Add a PayPal shopping cart to your site
Create a backup of your site
Activity feed
Add HTML to your profile block
Avoid cutting off heads in gallery tiles
Before and after comparison
Client login system
Custom site search
Expand your profile block
Label buttons in the lightbox
Number thumbnails
Original aspect ratio in thumbnail gallery
Rounded corners for photos
Smaller gallery icons + more
Tabbed pages
Lightbox tweaks