Diigo extension for Google Chrome allowing the following:
1. One-click screen capture
2. Annotate the screen shot with rectangles, circles, arrows, lines and text
3. Crop (or clip) any part of the screenshot
4. Save the screenshot or copy to clipboard.
Asst. Professor of Instructional Technology, Department of Educational Technology, Research and Assessment; Director, Faculty Development and Instructional Design Center at Northern Illinois University