Shottr - Shottr is a free macOS screenshot app with scrolling screenshots, OCR, annotation and measurement instruments.
Xnapper - Take beautiful screenshots instantly
GetScreenshot - Powerful & Affordable Screenshot API with a Zapier Integration
TakeaScreen - Take & capture screenshots like a Pro!
AppLaunchpad - Create free beautiful screenshots for App store/Google play
TweetPik - Easily convert tweets to images SVG, PNG and JPG