Landscape by Sprout Social - An interactive tool for social media image resizing
Buffer - Buffer makes it super easy to share any page you're reading. Keep your Buffer topped up and we automagically share them for you through the day.
MightyShare.io - Generate Social Images for WordPress
OneUp - Schedule and automate posts on Facebook, Instagram, Twitter, Pinterest, LinkedIn, and Google My Business.
OgHero - Generate social share images for your blogs automagically
Amplifr - Amplifr is a social media publication and analytics app that analyses conversion and revenue for each of your social media updates.