Callin - Callin is the first social podcasting app that lets you create, discover, and enjoy live and recorded content all in one place.
FileInfo.com - FileInfo is the central file extensions registry and contains a database of over 10,000 file types.
Podcastle - Convert news/articles to a podcast using machine learning
Convertio - File Conversion in the Cloud
Storyflash.net - storyflash creates meaningful content assets that are ready for distribution to all relevant Social Media channels!
FILExt - Open, view and convert files online