Shutter is a free screenshot software for Linux and it is released under GNU GPL v3 and Creative Commons licence. Using Shutter you can take a screenshot of a whole desktop screen, specific application window in your desktop, specific area selected by you or even of a website in your browser. You can also take screenshot of a menu or a tooltip from any application. After taking screenshots you can edit the screenshot like apply different effects to it, draw on it or highlight on it. It also supports directly uploading the image to an image hosting site from shutter.