You’ve probably seen this somewhere: ʇxǝʇ uʍop-ǝpısdn – upside-down text, rendered using carefully-chosen Unicode characters.
There are a number of web sites that will flip your text, but I wanted to point out the original: David Faden’s Flip. David got the idea from Philip Newton’s post, ¿ʇı̣ əsnqɐ ʇ,uɐɔ noʎ ɟı̣ əpoɔı̣un sı̣ pooɓ ʇɐɥʍ. [...]
Especially of part of the screen, for quick uploading. Not comprehensive, just the top tools.
Mac OS X:
Skitch
Jing
Linux (Ubuntu/Gnome):
GIMP – File > Create > Screenshot (or File > Acquire > Screenshot)
scrot
import (ImageMagick)
Windows:
Jing
More lists:
How to Take a Screenshot in Linux (Ubuntu)
How to choose the right screenshot program
Taking a Screenshot
OSX Screenshot Showdown – Jing vs Skitch