Placid - Use Placid to auto-generate images, videos & PDFs from reusable templates
AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.
Imagify - Optimize and resize images online and through your CMS.
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.
Landscape by Sprout Social - An interactive tool for social media image resizing
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.