====== Snipping tool vs GreenShot ======

From: http://www.techandlife.com/tag/windows-snipping-tool/

<code>
You’ll occasionally need to be able to draw text on the image, highlight parts of the image, 
draw arrows to point out certain features, and obfuscate (blur) any sensitive text
</code>

====== PicPick ======

From: http://www.picpick.org/en/

<code>
Take screenshots of an entire screen, an active window, the scrolling windows and any specific 
region of your desktop, etc.
Annotate and highlight your images:
text, arrows, shapes and more
Variety of graphic design accessories including color picker, color palette, pixel ruler, protractor, 
crosshair, magnifier, whiteboard
</code>