Storyly - Bring superb stories to your app
Kamua - Automate video resizing, cut-downs & captions for social
InAppStory - Engage your customers with Stories right from your app or mobile web product with InAppStory.
Flixier - Flixier Pro is an online video editor that speeds up your workflow with 1 minute rendering on any device, streamlined communication and collaboration features and plenty of cloud storage.
Zuck.js - JavaScript library that lets you add Stories everywhere
Streamlabs Podcast Editor - Streamlabs Podcast Editor ― Edit Your Video By Editing Text