Xnapper - Take beautiful screenshots instantly
Snip&Sketch - Quickly annotate screenshots, photos and other images with your pen, touch, or mouse and save, paste or share with other apps.
Screenzy - A simple screenshot beautifier
Picosmos Tools - Picosmos Tools integrates picture browsing, editing, layout, frames, and cosmetic effects into one set. It also provides plenty of source material.
BrandBird - Brand your Twitter content uniquely
Acethinker Screen Grabber - Acethinker Screen Grabber is an amazing screen recording application that allows the users to record the computer screen along with its audio and high-quality videos.