Storyly - Bring superb stories to your app
to Stories - Create stories from website link, podcast, YouTube, tweet, quote, text, photo or video
InAppStory - Engage your customers with Stories right from your app or mobile web product with InAppStory.
Steller - Everyone has a story to tell. Tell yours with photos, videos, and text.
Zuck.js - JavaScript library that lets you add Stories everywhere
Nodestory - Watch, create and share stories that don't disappear