Nimbus Screenshot - Take screenshots and record video from your screen
Awesome Screenshot - Capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and...
Evernote Web Clipper - Clip, don't bookmark. Web Clipper is a browser extension that lets you save any web page, article, or image into Evernote. Download now.
Paparazzi! - Paparazzi! is a small utility for Mac OS X that makes screenshots of webpages.
Snipaste - Snip & Paste
khtml2png - khtml2png is a command line program to create screenshots of webpages.