Slickr - Powerful cover image generator for your Hashnode blog
Callin - Callin is the first social podcasting app that lets you create, discover, and enjoy live and recorded content all in one place.
Canva Pro - Millions of design assets, templates and images all in one
Podcastle - Convert news/articles to a podcast using machine learning
SocialSizes - Sketch templates for sharing images & videos on social media
Storyflash.net - storyflash creates meaningful content assets that are ready for distribution to all relevant Social Media channels!