Evernote Web Clipper - Clip, don't bookmark. Web Clipper is a browser extension that lets you save any web page, article, or image into Evernote. Download now.
Nimbus Screenshot - Take screenshots and record video from your screen
CloudApp - CloudApp allows you to share images, links, music, videos and files. Here is how it works: choose a file, drag it to the menubar and let us take care of the rest.
Snipaste - Snip & Paste
Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.
FireShot - Capture web page screenshots in Firefox, Chrome, or IE, and then edit and save them.