Callin - Callin is the first social podcasting app that lets you create, discover, and enjoy live and recorded content all in one place.
Slickr - Powerful cover image generator for your Hashnode blog
Podcastle - Convert news/articles to a podcast using machine learning
Headers.me - Create social cover images that get you followers
Storyflash.net - storyflash creates meaningful content assets that are ready for distribution to all relevant Social Media channels!
Thumbnails Cloud - The simplest API for generating file thumbnails