Linux only: Free screenshot manager Shutter provides a really handy upgrade from the built-in GNOME screen grabber, sending your images to editors, auto-thumbnailing, sending to FTP or hosting sites, ...

Surprisingly, there aren't a huge number of screenshot tools for Linux. Luckily, they don't need to be, because the feature-rich Shutter is about as awesome a program as you can ask for. If you're not ...