Shutter - Screen Capture for Linux

URL: Shuttle
Platform: Linux
Price: $0
Version: 0.70.2

Features:

• take a screenshot of your complete desktop, a rectangular area or capture a website
• take screenshot directly or with a specified delay time
• save the screenshots to a specified directory and name them in a convenient way
  (using special wild-cards)
• Shutter is fully integrated into the Gnome Desktop (TrayIcon etc.)
• generate thumbnails directly when you are taking a screenshot and set a size level in %
• Shutter session collection
  • keep track of all screenshots during session
  • copy screeners to clipboard
  • print screenshots
  • delete screenshots
  • rename your file
• upload your files directly to Image-Hosters (e.g. http://ubuntu-pics.de), retrieve all the needed links and share them with others
• edit your screenshots directly using the embedded drawing tool

PicPick - Free Screen Capture for Windows

PicPick is portable ware, so you don't need any installation.

URL: PicPick
Price: Freeware
Platform: Windows
Version: 1.8.0.8

Features

• Captures
  
  • Full Screen (Support for Dual Monitors)
  • Active Window
  • Window Control (Scroll a page automatically)
  • Region, Fixed Region
  • FreeHand
  • Repeat Last Capture
• Image Editor
  
  • It's very similar to Microsoft Paint, but you can do more.
  • It provides an effect like selection opacity, blur, sharpen, brightness, contrast, hue, saturation, flip, rotate and etc.
• Color Picker
• Color Palette
• Pixel Ruler
• Screen Protractor
• Crosshair
• Screen Whiteboard