This Firefox PlugIn superimposes a grid over websites that maps out the browser sizes of different kinds of users, based on screen resolution statistics from thecounter.com and marketshare.hitslink.com. Recommended. Via

Finally. For free.

CameraBag emulates styles and processes from some of the most intersting cameras of the past to enhance the mood of an image. Via

With QuadCamera you can take continuous shooting. Just pressing a button, it proceeds to take 4-8 serial shoots and create one image. AppStore

Via

Helvetireader is a userscript that pares down Google Reader to the essentials: Now you can look at your feeds in the expanded view using Keyboard Shortcuts instead of on-screen buttons.

iDial emulates dialing of phone numbers with a virtual rotary keyboard. I am not sure what happened to # and *.