Skitch

Skitch reinvents screen captures by incorporating a wide range of tools that make editing them easier, as well as sharing them with other users over the internet or using email.

Much like Jing Project, Skitch lets you capture an area of your screen which you have marked and then overlay the captured image with all kinds of graphics and shapes such as: lines, squares, circles, arrows, text, etc.

The final image can then be stored in the program’s history folder, or uploaded to the skitch.com web service from within the application itself.