Meazure - What are the dimensions of that image? How big is this window?
Tinitell - Wearable mobile phone for kids. GPS enabled.
ScreenRuler - ScreenRuler lets you measure objects on your Ubuntu desktop using six different metrics.
Toymail Talkies - Toys that connect people
Bluegrams Screen Ruler - A lightweight and configurable ruler tool for Windows Desktop.
Kids in Touch - A safe, fun, messaging app for kids monitored by parents