ZaptureIt

Zapture is a faster and easier solution for screen captures. You see it, you share it! With Zapture, you can automatically copy your screen capture to your system clipboard for easy pasting into applications or view all of your screen captures in your Clipping History. Zapture also has excellent productivity tools with features such as sizing and measuring tools, image magnifier, color picker, and more.
An effective communication enhancement tool, Zapture is designed for personal and professional use. The easy-to-use screen capture software allows you to quickly and effortlessly take full screenshots or capture any element of your computer screen and share it via email, instant messenger, Facebook, Twitter, and other networking applications.