In OS X it is very easy to capture the screen as an image. It also offers many options, and using the Preview, you can edit the capture in seconds.
But those who want something more, Monosnap is a great option, a screen full of options and surprises for everyone.
Monosnap lets you capture screen, record a video, share images and more.
Grabber OS X improved
Monosnap is a screen that allows a screen image or a particular area. In the second case, it shows you the pixel size using a magnifying glass, very useful to define the area to capture.
But Monosnap offers more. Also it allows you to record a video of what you see on the desktop, useful for creating screencasts with tutorials.
Third, Monosnap captures what appears in front of the camera on your Mac as a autofoto (or as is being called, selfie).
On the other hand, with Monosnap you can save captures not only on your Mac but also in cloud services like Dropbox, Evernote or Box (payment options). As a free option, you can upload images to your FTP, SFTP, WebDAV , or Amazon S3 account.
Among the advanced options Monosnap, highlights the ability to capture the screen with a delay of 10 seconds to capture and automatically upload or capture the screen and edit the image.